//
// Output basic mesh information to screen
//
void ScreenOutput(const mesh& Mesh)
{
// Compute mesh quality parameters
double totalarea = Mesh.get_area_prim(1);
double maxarea = Mesh.get_area_prim(1);
double minarea = Mesh.get_area_prim(1);
for (int i=2; i<=Mesh.get_NumPhysElems(); i++)
{
double tmp = Mesh.get_area_prim(i);
totalarea = totalarea + tmp;
if (tmp < minarea)
{ minarea = tmp; }
if (tmp > maxarea)
{ maxarea = tmp; }
}
double minAngle = 180.0;
for (int i=1; i<=Mesh.get_NumPhysElems(); i++)
{
const int i1 = Mesh.get_tnode(i,1);
const int i2 = Mesh.get_tnode(i,2);
const int i3 = Mesh.get_tnode(i,3);
point v12, v23, v31;
v12.x = Mesh.get_node(i2,1) - Mesh.get_node(i1,1);
v12.y = Mesh.get_node(i2,2) - Mesh.get_node(i1,2);
v23.x = Mesh.get_node(i3,1) - Mesh.get_node(i2,1);
v23.y = Mesh.get_node(i3,2) - Mesh.get_node(i2,2);
v31.x = Mesh.get_node(i1,1) - Mesh.get_node(i3,1);
v31.y = Mesh.get_node(i1,2) - Mesh.get_node(i3,2);
double angle1 = acos((v12.x*-v31.x+v12.y*-v31.y)
/(sqrt(v12.x*v12.x+v12.y*v12.y)*sqrt(v31.x*v31.x+v31.y*v31.y)));
double angle2 = acos((v23.x*-v12.x+v23.y*-v12.y)
/(sqrt(v23.x*v23.x+v23.y*v23.y)*sqrt(v12.x*v12.x+v12.y*v12.y)));
double angle3 = acos((v31.x*-v23.x+v31.y*-v23.y)
/(sqrt(v31.x*v31.x+v31.y*v31.y)*sqrt(v23.x*v23.x+v23.y*v23.y)));
if ((angle1*180/pi) < minAngle)
{ minAngle = angle1*180/pi; }
if ((angle2*180/pi) < minAngle)
{ minAngle = angle2*180/pi; }
if ((angle3*180/pi) < minAngle)
{ minAngle = angle3*180/pi; }
}
// Output summary of results to screen
printf("\n");
printf(" SUMMARY OF RESULTS:\n");
printf(" -------------------\n");
printf(" Number of Elements: %8i\n",Mesh.get_NumElems());
printf(" Number of Physical Elements: %8i\n",Mesh.get_NumPhysElems());
printf(" Number of Ghost Elements: %8i\n",Mesh.get_NumGhostElems());
printf(" Number of Nodes: %8i\n",Mesh.get_NumNodes());
printf(" Number of Physical Nodes: %8i\n",Mesh.get_NumPhysNodes());
printf(" Number of Boundary Nodes: %8i\n",Mesh.get_NumBndNodes());
printf(" Number of Edges: %8i\n",Mesh.get_NumEdges());
printf(" Number of Boundary Edges: %8i\n",Mesh.get_NumBndEdges());
printf("\n");
printf(" Total Area Covered: %24.16e\n",totalarea);
printf(" Area Ratio: small/large: %24.16e\n",minarea/maxarea);
printf(" Angle Ratio: minAngle/60: %24.16e\n",minAngle/60.0);
printf("\n");
}
// Modified version of the all purpose routine L2Project specifically written
// for projecting the "time-averaged" flux function onto the basis function.
//
// This routine also returns the coefficients of the Lax Wendroff Flux
// Function when expanded with legendre basis functions, and therefore the
// basis expansions produced by this routine can be used for all of the
// Riemann solves.
//
// ---------------------------------------------------------------------
// Inputs should have the following sizes:
// TODO - document the inputs here
// ---------------------------------------------------------------------
void L2ProjectLxW_Unst( const int mterms,
const double alpha, const double beta_dt, const double charlie_dt,
const int istart, const int iend, // Start-stop indices
const int QuadOrder,
const int BasisOrder_qin,
const int BasisOrder_auxin,
const int BasisOrder_fout,
const mesh& Mesh,
const dTensor3* qin, const dTensor3* auxin, // state vector
dTensor3* F, dTensor3* G, // time-averaged Flux function
void FluxFunc (const dTensor2& xpts,
const dTensor2& Q, const dTensor2& Aux, dTensor3& flux),
void DFluxFunc (const dTensor2& xpts,
const dTensor2& Q, const dTensor2& aux, dTensor4& Dflux),
void D2FluxFunc (const dTensor2& xpts,
const dTensor2& Q, const dTensor2& aux, dTensor5& D2flux) )
{
if( fabs( alpha ) < 1e-14 && fabs( beta_dt ) < 1e-14 && fabs( charlie_dt ) < 1e-14 )
{
F->setall(0.);
G->setall(0.);
return;
}
// starting and ending indices
const int NumElems = Mesh.get_NumElems();
assert_ge(istart,1);
assert_le(iend,NumElems);
// qin variable
assert_eq(NumElems,qin->getsize(1));
const int meqn = qin->getsize(2);
const int kmax_qin = qin->getsize(3);
assert_eq(kmax_qin,(BasisOrder_qin*(BasisOrder_qin+1))/2);
// auxin variable
assert_eq(NumElems,auxin->getsize(1));
const int maux = auxin->getsize(2);
const int kmax_auxin = auxin->getsize(3);
assert_eq(kmax_auxin,(BasisOrder_auxin*(BasisOrder_auxin+1))/2);
// fout variables
assert_eq(NumElems, F->getsize(1));
const int mcomps_out = F->getsize(2);
const int kmax_fout = F->getsize(3);
assert_eq(kmax_fout, (BasisOrder_fout*(BasisOrder_fout+1))/2 );
// number of quadrature points
assert_ge(QuadOrder, 1);
assert_le(QuadOrder, 5);
// Number of quadrature points
int mpoints;
switch( QuadOrder )
{
case 1:
mpoints = 1;
break;
case 2:
mpoints = 3;
break;
case 3:
mpoints = 6;
break;
case 4:
mpoints = 12;
break;
case 5:
mpoints = 16;
break;
}
const int kmax = iMax(iMax(kmax_qin, kmax_auxin), kmax_fout);
dTensor2 phi(mpoints, kmax); // Legendre basis (orthogonal)
dTensor2 spts(mpoints, 2); // List of quadrature points
dTensor1 wgts(mpoints); // List of quadrature weights
setQuadPoints_Unst( QuadOrder, wgts, spts );
// ---------------------------------------------------------------------- //
// Evaluate the basis functions at each point
SetLegendreAtPoints_Unst(spts, phi);
// ---------------------------------------------------------------------- //
// ---------------------------------------------------------------------- //
// First-order derivatives
dTensor2 phi_xi (mpoints, kmax );
dTensor2 phi_eta(mpoints, kmax );
SetLegendreGrad_Unst( spts, phi_xi, phi_eta );
// ---------------------------------------------------------------------- //
// ---------------------------------------------------------------------- //
// Second-order derivatives
dTensor2 phi_xi2 (mpoints, kmax );
dTensor2 phi_xieta(mpoints, kmax );
dTensor2 phi_eta2 (mpoints, kmax );
LegendreDiff2_Unst(spts, &phi_xi2, &phi_xieta, &phi_eta2 );
// ---------------------------------------------------------------------- //
// ------------------------------------------------------------- //
// Loop over every grid cell indexed by user supplied parameters //
// described by istart...iend, jstart...jend //
// ------------------------------------------------------------- //
#pragma omp parallel for
for (int i=istart; i<=iend; i++)
{
// These need to be defined locally. Each mesh element carries its
// own change of basis matrix, so these need to be recomputed for
// each element. The canonical derivatives, phi_xi, and phi_eta can
// be computed and shared for each element.
// First-order derivatives
dTensor2 phi_x(mpoints, kmax_fout); // x-derivative of Legendre basis (orthogonal)
dTensor2 phi_y(mpoints, kmax_fout); // y-derivative of Legendre basis (orthogonal)
// Second-order derivatives
dTensor2 phi_xx(mpoints, kmax_fout); // xx-derivative of Legendre basis (orthogonal)
dTensor2 phi_xy(mpoints, kmax_fout); // xy-derivative of Legendre basis (orthogonal)
dTensor2 phi_yy(mpoints, kmax_fout); // yy-derivative of Legendre basis (orthogonal)
//find center of current cell
const int i1 = Mesh.get_tnode(i,1);
const int i2 = Mesh.get_tnode(i,2);
const int i3 = Mesh.get_tnode(i,3);
// Corners:
const double x1 = Mesh.get_node(i1,1);
const double y1 = Mesh.get_node(i1,2);
const double x2 = Mesh.get_node(i2,1);
const double y2 = Mesh.get_node(i2,2);
const double x3 = Mesh.get_node(i3,1);
const double y3 = Mesh.get_node(i3,2);
// Center of current cell:
const double xc = (x1+x2+x3)/3.0;
const double yc = (y1+y2+y3)/3.0;
// Variables that need to be written to, and therefore are
// created for each thread
dTensor2 xpts (mpoints, 2);
dTensor2 qvals (mpoints, meqn);
dTensor2 auxvals(mpoints, maux);
// local storage for Flux function its Jacobian, and the Hessian:
dTensor3 fvals(mpoints, meqn, 2); // flux function (vector)
dTensor4 A(mpoints, meqn, meqn, 2); // Jacobian of flux
dTensor5 H(mpoints, meqn, meqn, meqn, 2); // Hessian of flux
// Compute q, aux and fvals at each Gaussian Quadrature point
// for this current cell indexed by (i,j)
// Save results into dTensor2 qvals, auxvals and fvals.
for (int m=1; m<= mpoints; m++)
{
// convert phi_xi and phi_eta derivatives
// to phi_x and phi_y derivatives through Jacobian
//
// Note that:
//
// pd_x = J11 pd_xi + J12 pd_eta and
// pd_y = J21 pd_xi + J22 pd_eta.
//
// Squaring these operators yields the second derivatives.
for (int k=1; k<=kmax_fout; k++)
{
phi_x.set(m,k, Mesh.get_jmat(i,1,1)*phi_xi.get(m,k)
+ Mesh.get_jmat(i,1,2)*phi_eta.get(m,k) );
phi_y.set(m,k, Mesh.get_jmat(i,2,1)*phi_xi.get(m,k)
+ Mesh.get_jmat(i,2,2)*phi_eta.get(m,k) );
phi_xx.set(m,k, Mesh.get_jmat(i,1,1)*Mesh.get_jmat(i,1,1)*phi_xi2.get(m,k)
+ Mesh.get_jmat(i,1,1)*Mesh.get_jmat(i,1,2)*phi_xieta.get(m,k)
+ Mesh.get_jmat(i,1,2)*Mesh.get_jmat(i,1,2)*phi_eta2.get(m,k)
);
phi_xy.set(m,k, Mesh.get_jmat(i,1,1)*Mesh.get_jmat(i,2,1)*phi_xi2.get(m,k)
+(Mesh.get_jmat(i,1,2)*Mesh.get_jmat(i,2,1)
+ Mesh.get_jmat(i,1,1)*Mesh.get_jmat(i,2,2))*phi_xieta.get(m,k)
+ Mesh.get_jmat(i,1,2)*Mesh.get_jmat(i,2,2)*phi_eta2.get(m,k)
);
phi_yy.set(m,k, Mesh.get_jmat(i,2,1)*Mesh.get_jmat(i,2,1)*phi_xi2.get(m,k)
+ Mesh.get_jmat(i,2,1)*Mesh.get_jmat(i,2,2)*phi_xieta.get(m,k)
+ Mesh.get_jmat(i,2,2)*Mesh.get_jmat(i,2,2)*phi_eta2.get(m,k)
);
}
// point on the unit triangle
const double s = spts.get(m,1);
const double t = spts.get(m,2);
// point on the physical triangle
xpts.set(m,1, xc + (x2-x1)*s + (x3-x1)*t );
xpts.set(m,2, yc + (y2-y1)*s + (y3-y1)*t );
// Solution values (q) at each grid point
for (int me=1; me<=meqn; me++)
{
qvals.set(m,me, 0.0 );
for (int k=1; k<=kmax_qin; k++)
{
qvals.set(m,me, qvals.get(m,me)
+ phi.get(m,k) * qin->get(i,me,k) );
}
}
// Auxiliary values (aux) at each grid point
for (int ma=1; ma<=maux; ma++)
{
auxvals.set(m,ma, 0.0 );
for (int k=1; k<=kmax_auxin; k++)
{
auxvals.set(m,ma, auxvals.get(m,ma)
+ phi.get(m,k) * auxin->get(i,ma,k) );
}
}
}
// ----------------------------------------------------------------- //
//
// Part I:
//
// Project the flux function onto the basis
// functions. This is the term of order O( 1 ) in the
// "time-averaged" Taylor expansion of f and g.
//
// ----------------------------------------------------------------- //
// Call user-supplied function to set fvals
FluxFunc(xpts, qvals, auxvals, fvals);
// Evaluate integral on current cell (project onto Legendre basis)
// using Gaussian Quadrature for the integration
//
// TODO - do we want to optimize this by looking into using transposes,
// as has been done in the 2d/cart code? (5/14/2014) -DS
for (int me=1; me<=mcomps_out; me++)
for (int k=1; k<=kmax; k++)
{
double tmp1 = 0.0;
double tmp2 = 0.0;
for (int mp=1; mp <= mpoints; mp++)
{
tmp1 += wgts.get(mp)*fvals.get(mp, me, 1)*phi.get(mp, k);
tmp2 += wgts.get(mp)*fvals.get(mp, me, 2)*phi.get(mp, k);
}
F->set(i, me, k, 2.0*tmp1 );
G->set(i, me, k, 2.0*tmp2 );
}
// ----------------------------------------------------------------- //
//
// Part II:
//
// Project the derivative of the flux function onto the basis
// functions. This is the term of order O( \dt ) in the
// "time-averaged" Taylor expansion of f and g.
//
// ----------------------------------------------------------------- //
// ----------------------------------------------------------------- //
// Compute pointwise values for fx+gy:
//
// We can't multiply fvals of f, and g,
// by alpha, otherwise we compute the wrong derivative here!
//
dTensor2 fx_plus_gy( mpoints, meqn ); fx_plus_gy.setall(0.);
for( int mp=1; mp <= mpoints; mp++ )
for( int me=1; me <= meqn; me++ )
{
double tmp = 0.;
for( int k=2; k <= kmax; k++ )
{
tmp += F->get( i, me, k ) * phi_x.get( mp, k );
tmp += G->get( i, me, k ) * phi_y.get( mp, k );
}
fx_plus_gy.set( mp, me, tmp );
}
// Call user-supplied Jacobian to set f'(q) and g'(q):
DFluxFunc( xpts, qvals, auxvals, A );
// place-holders for point values of
// f'(q)( fx + gy ) and g'(q)( fx + gy ):
dTensor2 dt_times_fdot( mpoints, meqn );
dTensor2 dt_times_gdot( mpoints, meqn );
// Compute point values for f'(q) * (fx+gy) and g'(q) * (fx+gy):
for( int mp=1; mp <= mpoints; mp++ )
for( int m1=1; m1 <= meqn; m1++ )
{
double tmp1 = 0.;
double tmp2 = 0.;
for( int m2=1; m2 <= meqn; m2++ )
{
tmp1 += A.get(mp, m1, m2, 1 ) * fx_plus_gy.get(mp, m2);
tmp2 += A.get(mp, m1, m2, 2 ) * fx_plus_gy.get(mp, m2);
}
dt_times_fdot.set( mp, m1, -beta_dt*tmp1 );
dt_times_gdot.set( mp, m1, -beta_dt*tmp2 );
}
// --- Third-order terms --- //
//
// These are the terms that are O( \dt^2 ) in the "time-averaged"
// flux function.
dTensor2 f_tt( mpoints, meqn ); f_tt.setall(0.);
dTensor2 g_tt( mpoints, meqn ); g_tt.setall(0.);
if( mterms > 2 )
{
// Construct the Hessian at each (quadrature) point
D2FluxFunc( xpts, qvals, auxvals, H );
// Second-order derivative terms
dTensor2 qx_vals (mpoints, meqn); qx_vals.setall(0.);
dTensor2 qy_vals (mpoints, meqn); qy_vals.setall(0.);
dTensor2 fxx_vals(mpoints, meqn); fxx_vals.setall(0.);
dTensor2 gxx_vals(mpoints, meqn); gxx_vals.setall(0.);
dTensor2 fxy_vals(mpoints, meqn); fxy_vals.setall(0.);
dTensor2 gxy_vals(mpoints, meqn); gxy_vals.setall(0.);
dTensor2 fyy_vals(mpoints, meqn); fyy_vals.setall(0.);
dTensor2 gyy_vals(mpoints, meqn); gyy_vals.setall(0.);
for( int m=1; m <= mpoints; m++ )
for( int me=1; me <= meqn; me++ )
{
// Can start at k=1, because derivative of a constant is
// zero.
double tmp_qx = 0.;
double tmp_qy = 0.;
for( int k=2; k <= kmax; k++ )
{
tmp_qx += phi_x.get(m,k) * qin->get(i,me,k);
tmp_qy += phi_y.get(m,k) * qin->get(i,me,k);
}
qx_vals.set(m,me, tmp_qx );
qy_vals.set(m,me, tmp_qy );
// First non-zero terms start at third-order.
for( int k=4; k <= kmax; k++ )
{
fxx_vals.set(m,me, fxx_vals.get(m,me) + phi_xx.get(m,k)*F->get(i,me,k) );
gxx_vals.set(m,me, gxx_vals.get(m,me) + phi_xx.get(m,k)*G->get(i,me,k) );
fxy_vals.set(m,me, fxy_vals.get(m,me) + phi_xy.get(m,k)*F->get(i,me,k) );
gxy_vals.set(m,me, gxy_vals.get(m,me) + phi_xy.get(m,k)*G->get(i,me,k) );
fyy_vals.set(m,me, fyy_vals.get(m,me) + phi_yy.get(m,k)*F->get(i,me,k) );
gyy_vals.set(m,me, gyy_vals.get(m,me) + phi_yy.get(m,k)*G->get(i,me,k) );
}
}
// ----------------------------------- //
// Part I: Compute (f_x + g_y)_{,t}
// ----------------------------------- //
// Compute terms that get multiplied by \pd2{ f }{ q } and \pd2{ g }{ q }.
dTensor2 fx_plus_gy_t( mpoints, meqn );
for( int m = 1; m <= mpoints; m++ )
for( int me = 1; me <= meqn; me++ )
{
double tmp = 0.;
// Terms that get multiplied by the Hessian:
for( int m1=1; m1 <= meqn; m1++ )
for( int m2=1; m2 <= meqn; m2++ )
{
tmp += H.get(m,me,m1,m2,1)*qx_vals.get(m,m1)*fx_plus_gy.get(m,m2);
tmp += H.get(m,me,m1,m2,2)*qy_vals.get(m,m1)*fx_plus_gy.get(m,m2);
}
// Terms that get multiplied by f'(q) and g'(q):
for( int m1=1; m1 <= meqn; m1++ )
{
tmp += A.get(m,me,m1,1)*( fxx_vals.get(m,m1)+gxy_vals.get(m,m1) );
tmp += A.get(m,me,m1,2)*( fxy_vals.get(m,m1)+gyy_vals.get(m,m1) );
}
fx_plus_gy_t.set( m, me, tmp );
}
// ----------------------------------- //
// Part II: Compute
// f'(q) * fx_plus_gy_t and
// g'(q) * fx_plus_gy_t
// ----------------------------------- //
// Add in the third term that gets multiplied by A:
for( int m=1; m <= mpoints; m++ )
for( int m1=1; m1 <= meqn; m1++ )
{
double tmp1 = 0.;
double tmp2 = 0.;
for( int m2=1; m2 <= meqn; m2++ )
{
tmp1 += A.get(m,m1,m2,1)*fx_plus_gy_t.get(m,m2);
tmp2 += A.get(m,m1,m2,2)*fx_plus_gy_t.get(m,m2);
}
f_tt.set( m, m1, tmp1 );
g_tt.set( m, m1, tmp2 );
}
// ----------------------------------------------- //
// Part III: Add in contributions from
// f''(q) * (fx_plus_gy, fx_plus_gy ) and
// g''(q) * (fx_plus_gy, fx_plus_gy ).
// ----------------------------------------------- //
for( int m =1; m <= mpoints; m++ )
for( int me =1; me <= meqn; me++ )
{
double tmp1 = 0.;
double tmp2 = 0.;
// Terms that get multiplied by the Hessian:
for( int m1=1; m1 <= meqn; m1++ )
for( int m2=1; m2 <= meqn; m2++ )
{
tmp1 += H.get(m,me,m1,m2,1)*fx_plus_gy.get(m,m1)*fx_plus_gy.get(m,m2);
tmp2 += H.get(m,me,m1,m2,2)*fx_plus_gy.get(m,m1)*fx_plus_gy.get(m,m2);
}
f_tt.set( m, me, f_tt.get(m,me) + tmp1 );
g_tt.set( m, me, g_tt.get(m,me) + tmp2 );
}
} // End of computing "third"-order terms
// ---------------------------------------------------------- //
//
// Construct basis coefficients (integrate_on_current_cell)
//
// ---------------------------------------------------------- //
for (int me=1; me<=mcomps_out; me++)
for (int k=1; k<=kmax; k++)
{
double tmp1 = 0.0;
double tmp2 = 0.0;
for (int mp=1; mp<=mpoints; mp++)
{
tmp1 += wgts.get(mp)*phi.get(mp,k)*(
dt_times_fdot.get(mp, me) + charlie_dt*f_tt.get(mp, me) );
tmp2 += wgts.get(mp)*phi.get(mp,k)*(
dt_times_gdot.get(mp, me) + charlie_dt*g_tt.get(mp, me) );
}
F->set(i,me,k, F->get(i,me,k) + 2.0*tmp1 );
G->set(i,me,k, G->get(i,me,k) + 2.0*tmp2 );
}
}
}
// All-purpose routine for computing the L2-projection
// of various functions onto the gradient of the Legendre basis
// (Unstructured grid version)
//
void L2ProjectGrad_Unst(
const dTensor2* vel_vec,
const int istart,
const int iend,
const int QuadOrder,
const int BasisOrder_qin,
const int BasisOrder_auxin,
const int BasisOrder_fout,
const mesh& Mesh,
const dTensor3* qin,
const dTensor3* auxin,
dTensor3* fout,
void (*Func)(const dTensor2* vel_vec,
const dTensor2&,const dTensor2&,
const dTensor2&,dTensor3&))
{
// starting and ending indeces
const int NumElems = Mesh.get_NumElems();
assert_ge(istart,1);
assert_le(iend,NumElems);
// qin variable
assert_eq(NumElems,qin->getsize(1));
const int meqn = qin->getsize(2);
const int kmax_qin = qin->getsize(3);
assert_eq(kmax_qin,(BasisOrder_qin*(BasisOrder_qin+1))/2);
// auxin variable
assert_eq(NumElems,auxin->getsize(1));
const int maux = auxin->getsize(2);
const int kmax_auxin = auxin->getsize(3);
assert_eq(kmax_auxin,(BasisOrder_auxin*(BasisOrder_auxin+1))/2);
// fout variables
assert_eq(NumElems,fout->getsize(1));
const int mcomps_out = fout->getsize(2);
const int kmax_fout = fout->getsize(3);
assert_eq(kmax_fout,(BasisOrder_fout*(BasisOrder_fout+1))/2);
// number of quadrature points
assert_ge(QuadOrder,1);
assert_le(QuadOrder,5);
int mpoints;
switch ( QuadOrder )
{
case 1:
mpoints = 0;
break;
case 2:
mpoints = 1;
break;
case 3:
mpoints = 6;
break;
case 4:
mpoints = 7;
break;
case 5:
mpoints = 16;
break;
}
// trivial case
if ( QuadOrder==1 )
{
for (int i=istart; i<=iend; i++)
for (int m=1; m<=mcomps_out; m++)
for (int k=1; k<=kmax_fout; k++)
{ fout->set(i,m,k, 0.0 ); }
}
else
{
const int kmax = iMax(iMax(kmax_qin,kmax_auxin),kmax_fout);
dTensor2 spts(mpoints,2);
dTensor1 wgts(mpoints);
dTensor2 xpts(mpoints,2);
dTensor2 qvals(mpoints,meqn);
dTensor2 auxvals(mpoints,maux);
dTensor3 fvals(mpoints,mcomps_out,2);
dTensor2 mu(mpoints,kmax); // monomial basis (non-orthogonal)
dTensor2 phi(mpoints,kmax); // Legendre basis (orthogonal)
dTensor2 mu_xi(mpoints,kmax_fout); // xi-derivative of monomial basis (non-orthogonal)
dTensor2 mu_eta(mpoints,kmax_fout); // eta-derivative of monomial basis (non-orthogonal)
dTensor2 phi_xi(mpoints,kmax_fout); // xi-derivative of Legendre basis (orthogonal)
dTensor2 phi_eta(mpoints,kmax_fout); // eta-derivative of Legendre basis (orthogonal)
dTensor2 phi_x(mpoints,kmax_fout); // x-derivative of Legendre basis (orthogonal)
dTensor2 phi_y(mpoints,kmax_fout); // y-derivative of Legendre basis (orthogonal)
switch ( QuadOrder )
{
case 2:
spts.set(1,1, 0.0 );
spts.set(1,2, 0.0 );
wgts.set(1, 0.5 );
break;
case 3:
spts.set(1,1, 0.112615157582632 );
spts.set(1,2, 0.112615157582632 );
spts.set(2,1, -0.225230315165263 );
spts.set(2,2, 0.112615157582632 );
spts.set(3,1, 0.112615157582632 );
spts.set(3,2, -0.225230315165263 );
spts.set(4,1, -0.241757119823562 );
spts.set(4,2, -0.241757119823562 );
spts.set(5,1, 0.483514239647126 );
spts.set(5,2, -0.241757119823562 );
spts.set(6,1, -0.241757119823562 );
spts.set(6,2, 0.483514239647126 );
wgts.set(1, 0.1116907948390055 );
wgts.set(2, 0.1116907948390055 );
wgts.set(3, 0.1116907948390055 );
wgts.set(4, 0.0549758718276610 );
wgts.set(5, 0.0549758718276610 );
wgts.set(6, 0.0549758718276610 );
break;
case 4:
spts.set(1,1, 0.000000000000000 );
spts.set(1,2, 0.000000000000000 );
spts.set(2,1, 0.136808730771782 );
spts.set(2,2, 0.136808730771782 );
spts.set(3,1, -0.273617461543563 );
spts.set(3,2, 0.136808730771782 );
spts.set(4,1, 0.136808730771782 );
spts.set(4,2, -0.273617461543563 );
spts.set(5,1, -0.232046826009877 );
spts.set(5,2, -0.232046826009877 );
spts.set(6,1, 0.464093652019754 );
spts.set(6,2, -0.232046826009877 );
spts.set(7,1, -0.232046826009877 );
spts.set(7,2, 0.464093652019754 );
wgts.set(1, 0.1125000000000000 );
wgts.set(2, 0.0661970763942530 );
wgts.set(3, 0.0661970763942530 );
wgts.set(4, 0.0661970763942530 );
wgts.set(5, 0.0629695902724135 );
wgts.set(6, 0.0629695902724135 );
wgts.set(7, 0.0629695902724135 );
break;
case 5:
spts.set(1,1, 0.000000000000000 );
spts.set(1,2, 0.000000000000000 );
spts.set(2,1, 0.125959254959390 );
spts.set(2,2, 0.125959254959390 );
spts.set(3,1, -0.251918509918779 );
spts.set(3,2, 0.125959254959390 );
spts.set(4,1, 0.125959254959390 );
spts.set(4,2, -0.251918509918779 );
spts.set(5,1, -0.162764025581573 );
spts.set(5,2, -0.162764025581573 );
spts.set(6,1, 0.325528051163147 );
spts.set(6,2, -0.162764025581573 );
spts.set(7,1, -0.162764025581573 );
spts.set(7,2, 0.325528051163147 );
spts.set(8,1, -0.282786105016302 );
spts.set(8,2, -0.282786105016302 );
spts.set(9,1, 0.565572210032605 );
spts.set(9,2, -0.282786105016302 );
spts.set(10,1, -0.282786105016302 );
spts.set(10,2, 0.565572210032605 );
spts.set(11,1, -0.324938555923375 );
spts.set(11,2, -0.070220503698695 );
spts.set(12,1, -0.324938555923375 );
spts.set(12,2, 0.395159059622071 );
spts.set(13,1, -0.070220503698695 );
spts.set(13,2, -0.324938555923375 );
spts.set(14,1, -0.070220503698695 );
spts.set(14,2, 0.395159059622071 );
spts.set(15,1, 0.395159059622071 );
spts.set(15,2, -0.324938555923375 );
spts.set(16,1, 0.395159059622071 );
spts.set(16,2, -0.070220503698695 );
wgts.set(1, 0.0721578038388935 );
wgts.set(2, 0.0475458171336425 );
wgts.set(3, 0.0475458171336425 );
wgts.set(4, 0.0475458171336425 );
wgts.set(5, 0.0516086852673590 );
wgts.set(6, 0.0516086852673590 );
wgts.set(7, 0.0516086852673590 );
wgts.set(8, 0.0162292488115990 );
wgts.set(9, 0.0162292488115990 );
wgts.set(10, 0.0162292488115990 );
wgts.set(11, 0.0136151570872175 );
wgts.set(12, 0.0136151570872175 );
wgts.set(13, 0.0136151570872175 );
wgts.set(14, 0.0136151570872175 );
wgts.set(15, 0.0136151570872175 );
wgts.set(16, 0.0136151570872175 );
break;
}
// Loop over each quadrature point and construct monomial polys
for (int m=1; m<=mpoints; m++)
{
// coordinates
const double xi = spts.get(m,1);
const double xi2 = xi*xi;
const double xi3 = xi2*xi;
const double xi4 = xi3*xi;
const double eta = spts.get(m,2);
const double eta2 = eta*eta;
const double eta3 = eta2*eta;
const double eta4 = eta3*eta;
// monomial basis functions at each gaussian quadrature point
switch( kmax )
{
case 15: // fifth order
mu.set(m, 15, eta4 );
mu.set(m, 14, xi4 );
mu.set(m, 13, xi2*eta2 );
mu.set(m, 12, eta3*xi );
mu.set(m, 11, xi3*eta );
case 10: // fourth order
mu.set(m, 10, eta3 );
mu.set(m, 9, xi3 );
mu.set(m, 8, xi*eta2 );
mu.set(m, 7, eta*xi2 );
case 6: // third order
mu.set(m, 6, eta2 );
mu.set(m, 5, xi2 );
mu.set(m, 4, xi*eta );
case 3: // second order
mu.set(m, 3, eta );
mu.set(m, 2, xi );
case 1: // first order
mu.set(m, 1, 1.0 );
break;
}
// Loop over each quadrature point and construct Legendre polys
for (int i=1; i<=kmax; i++)
{
double tmp = 0.0;
for (int j=1; j<=i; j++)
{ tmp = tmp + Mmat[i-1][j-1]*mu.get(m,j); }
phi.set(m,i, tmp );
}
// Gradient of monomial basis functions at each gaussian quadrature point
switch( kmax_fout )
{
case 15: // fifth order
mu_xi.set( m,15, 0.0 );
mu_xi.set( m,14, 4.0*xi3 );
mu_xi.set( m,13, 2.0*xi*eta2 );
mu_xi.set( m,12, eta3 );
mu_xi.set( m,11, 3.0*xi2*eta );
mu_eta.set( m,15, 4.0*eta3 );
mu_eta.set( m,14, 0.0 );
mu_eta.set( m,13, 2.0*xi2*eta );
mu_eta.set( m,12, 3.0*eta2*xi );
mu_eta.set( m,11, xi3 );
case 10: // fourth order
mu_xi.set( m,10, 0.0 );
mu_xi.set( m,9, 3.0*xi2 );
mu_xi.set( m,8, eta2 );
mu_xi.set( m,7, 2.0*eta*xi );
mu_eta.set( m,10, 3.0*eta2 );
mu_eta.set( m,9, 0.0 );
mu_eta.set( m,8, 2.0*eta*xi );
mu_eta.set( m,7, xi2 );
case 6: // third order
mu_xi.set( m,6, 0.0 );
mu_xi.set( m,5, 2.0*xi );
mu_xi.set( m,4, eta );
mu_eta.set( m,6, 2.0*eta );
mu_eta.set( m,5, 0.0 );
mu_eta.set( m,4, xi );
case 3: // second order
mu_xi.set( m,3, 0.0 );
mu_xi.set( m,2, 1.0 );
mu_eta.set( m,3, 1.0 );
mu_eta.set( m,2, 0.0 );
case 1: // first order
mu_xi.set( m,1, 0.0 );
mu_eta.set( m,1, 0.0 );
break;
}
// Loop over each quadrature point and construct Legendre polys
for (int i=1; i<=kmax_fout; i++)
{
double tmp1 = 0.0;
double tmp2 = 0.0;
for (int j=1; j<=i; j++)
{
tmp1 = tmp1 + Mmat[i-1][j-1]*mu_xi.get(m,j);
tmp2 = tmp2 + Mmat[i-1][j-1]*mu_eta.get(m,j);
}
phi_xi.set(m,i, tmp1 );
phi_eta.set(m,i, tmp2 );
}
}
// -------------------------------------------------------------
// Loop over every grid cell indexed by user supplied parameters
// described by istart...iend
// -------------------------------------------------------------
#pragma omp parallel for
for (int i=istart; i<=iend; i++)
{
// Find center of current cell
const int i1 = Mesh.get_tnode(i,1);
const int i2 = Mesh.get_tnode(i,2);
const int i3 = Mesh.get_tnode(i,3);
const double x1 = Mesh.get_node(i1,1);
const double y1 = Mesh.get_node(i1,2);
const double x2 = Mesh.get_node(i2,1);
const double y2 = Mesh.get_node(i2,2);
const double x3 = Mesh.get_node(i3,1);
const double y3 = Mesh.get_node(i3,2);
const double xc = (x1+x2+x3)/3.0;
const double yc = (y1+y2+y3)/3.0;
// Compute q, aux and fvals at each Gaussian Quadrature point
// for this current cell indexed by (i,j)
// Save results into dTensor2 qvals, auxvals and fvals.
for (int m=1; m<=mpoints; m++)
{
// convert phi_xi and phi_eta derivatives
// to phi_x and phi_y derivatives through Jacobian
for (int k=1; k<=kmax_fout; k++)
{
phi_x.set(m,k, Mesh.get_jmat(i,1,1)*phi_xi.get(m,k)
+ Mesh.get_jmat(i,1,2)*phi_eta.get(m,k) );
phi_y.set(m,k, Mesh.get_jmat(i,2,1)*phi_xi.get(m,k)
+ Mesh.get_jmat(i,2,2)*phi_eta.get(m,k) );
}
// point on the unit triangle
const double s = spts.get(m,1);
const double t = spts.get(m,2);
// point on the physical triangle
xpts.set(m,1, xc + (x2-x1)*s + (x3-x1)*t );
xpts.set(m,2, yc + (y2-y1)*s + (y3-y1)*t );
// Solution values (q) at each grid point
for (int me=1; me<=meqn; me++)
{
qvals.set(m,me, 0.0 );
for (int k=1; k<=kmax_qin; k++)
{
qvals.set(m,me, qvals.get(m,me)
+ phi.get(m,k) * qin->get(i,me,k) );
}
}
// Auxiliary values (aux) at each grid point
for (int ma=1; ma<=maux; ma++)
{
auxvals.set(m,ma, 0.0 );
for (int k=1; k<=kmax_auxin; k++)
{
auxvals.set(m,ma, auxvals.get(m,ma)
+ phi.get(m,k) * auxin->get(i,ma,k) );
}
}
}
// Call user-supplied function to set fvals
Func(vel_vec, xpts, qvals, auxvals, fvals);
// Evaluate integral on current cell (project onto Legendre basis)
// using Gaussian Quadrature for the integration
for (int m1=1; m1<=mcomps_out; m1++)
for (int m2=1; m2<=kmax_fout; m2++)
{
double tmp = 0.0;
for (int k=1; k<=mpoints; k++)
{
tmp = tmp + wgts.get(k)*
( fvals.get(k,m1,1)*phi_x.get(k,m2) +
fvals.get(k,m1,2)*phi_y.get(k,m2) );
}
fout->set(i, m1, m2, 2.0*tmp );
}
}
}
}
// GAUSS-LOBATTO QUADRATURE ALONG EDGE
void SetEdgeDataGL_Unst(const mesh& Mesh,
int NumQuadPoints,
int NumBasisOrder,
edge_data_Unst* EdgeData)
{
// Quick error check
if (NumQuadPoints<2 || NumQuadPoints>6 || NumBasisOrder<1 || NumBasisOrder>5)
{
printf(" \n");
printf(" Error in SetEdgeData_Unst.cpp \n");
printf(" NumQuadPoints must be 2,3,4,5, or 6.\n");
printf(" NumBasisOrder must be 1,2,3,4, or 5.\n");
printf(" NumQuadPoints = %i\n",NumQuadPoints);
printf(" NumBasisOrder = %i\n",NumBasisOrder);
printf("\n");
exit(1);
}
// ---------------------------------
// Set quadrature weights and points
// ---------------------------------
switch( NumQuadPoints )
{
case 2:
EdgeData->GL_wgts1d->set(1, 1.0 );
EdgeData->GL_wgts1d->set(2, 1.0 );
EdgeData->GL_xpts1d->set(1, 1.0 );
EdgeData->GL_xpts1d->set(2, -1.0 );
break;
case 3:
EdgeData->GL_wgts1d->set(1, onethird );
EdgeData->GL_wgts1d->set(2, 4.0*onethird );
EdgeData->GL_wgts1d->set(3, onethird );
EdgeData->GL_xpts1d->set(1, 1.0 );
EdgeData->GL_xpts1d->set(2, 0.0 );
EdgeData->GL_xpts1d->set(3, -1.0 );
break;
case 4:
EdgeData->GL_wgts1d->set(1, 0.5*onethird );
EdgeData->GL_wgts1d->set(2, 2.5*onethird );
EdgeData->GL_wgts1d->set(3, 2.5*onethird );
EdgeData->GL_wgts1d->set(4, 0.5*onethird );
EdgeData->GL_xpts1d->set(1, 1.0 );
EdgeData->GL_xpts1d->set(2, osq5 );
EdgeData->GL_xpts1d->set(3, -osq5 );
EdgeData->GL_xpts1d->set(4, -1.0 );
break;
case 5:
EdgeData->GL_wgts1d->set(1, 0.1 );
EdgeData->GL_wgts1d->set(2, 49.0/90.0 );
EdgeData->GL_wgts1d->set(3, 32.0/45.0 );
EdgeData->GL_wgts1d->set(4, 49.0/90.0 );
EdgeData->GL_wgts1d->set(5, 0.1 );
EdgeData->GL_xpts1d->set(1, 1.0 );
EdgeData->GL_xpts1d->set(2, sq3*osq7 );
EdgeData->GL_xpts1d->set(3, 0.0 );
EdgeData->GL_xpts1d->set(4, -sq3*osq7 );
EdgeData->GL_xpts1d->set(5, -1.0 );
break;
case 6:
EdgeData->GL_wgts1d->set(1, 0.2*onethird );
EdgeData->GL_wgts1d->set(2, (1.4 - 0.1*sq7)*onethird );
EdgeData->GL_wgts1d->set(3, (1.4 + 0.1*sq7)*onethird );
EdgeData->GL_wgts1d->set(4, (1.4 + 0.1*sq7)*onethird );
EdgeData->GL_wgts1d->set(5, (1.4 - 0.1*sq7)*onethird );
EdgeData->GL_wgts1d->set(6, 0.2*onethird );
EdgeData->GL_xpts1d->set(1, 1.0 );
EdgeData->GL_xpts1d->set(2, (1/21.0)*sqrt(147.0+42.0*sq7) );
EdgeData->GL_xpts1d->set(3, (1/21.0)*sqrt(147.0-42.0*sq7) );
EdgeData->GL_xpts1d->set(4, -(1/21.0)*sqrt(147.0-42.0*sq7) );
EdgeData->GL_xpts1d->set(5, -(1/21.0)*sqrt(147.0+42.0*sq7) );
EdgeData->GL_xpts1d->set(6, -1.0 );
break;
}
// ---------------------------------
// Legendre basis functions on the
// left and right of each edge
// ---------------------------------
const int NumEdges = Mesh.get_NumEdges();
const int NumBasisComps = (NumBasisOrder*(NumBasisOrder+1))/2;
dTensor1 xp1(3);
dTensor1 yp1(3);
dTensor1 xp2(3);
dTensor1 yp2(3);
dTensor1 xy1(2);
dTensor1 xy2(2);
dTensor1 mu1(NumBasisComps);
dTensor1 mu2(NumBasisComps);
for (int i=1; i<=NumEdges; i++)
{
// Get edge information
const double x1 = Mesh.get_edge(i,1);
const double y1 = Mesh.get_edge(i,2);
const double x2 = Mesh.get_edge(i,3);
const double y2 = Mesh.get_edge(i,4);
const int e1 = Mesh.get_eelem(i,1);
const int e2 = Mesh.get_eelem(i,2);
// Get element information about
// the two elements that meet at
// the current edge
const double Area1 = Mesh.get_area_prim(e1);
const double Area2 = Mesh.get_area_prim(e2);
for (int k=1; k<=3; k++)
{
xp1.set(k, Mesh.get_node(Mesh.get_tnode(e1,k),1) );
yp1.set(k, Mesh.get_node(Mesh.get_tnode(e1,k),2) );
xp2.set(k, Mesh.get_node(Mesh.get_tnode(e2,k),1) );
yp2.set(k, Mesh.get_node(Mesh.get_tnode(e2,k),2) );
}
const double xc1 = (xp1.get(1) + xp1.get(2) + xp1.get(3))/3.0;
const double yc1 = (yp1.get(1) + yp1.get(2) + yp1.get(3))/3.0;
const double xc2 = (xp2.get(1) + xp2.get(2) + xp2.get(3))/3.0;
const double yc2 = (yp2.get(1) + yp2.get(2) + yp2.get(3))/3.0;
// quadrature points on the edge
for (int m=1; m<=NumQuadPoints; m++)
{
// Take integration point s (in [-1,1])
// and map to physical domain
const double s = EdgeData->GL_xpts1d->get(m);
const double x = x1 + 0.5*(s+1.0)*(x2-x1);
const double y = y1 + 0.5*(s+1.0)*(y2-y1);
// Take physical point (x,y)
// and map into the coordinates
// of the two triangles that are
// adjacent to the current edge
xy1.set(1, ((yp1.get(3)-yp1.get(1))*(x-xc1)
+ (xp1.get(1)-xp1.get(3))*(y-yc1))/(2.0*Area1) );
xy1.set(2, ((yp1.get(1)-yp1.get(2))*(x-xc1)
+ (xp1.get(2)-xp1.get(1))*(y-yc1))/(2.0*Area1) );
xy2.set(1, ((yp2.get(3)-yp2.get(1))*(x-xc2)
+ (xp2.get(1)-xp2.get(3))*(y-yc2))/(2.0*Area2) );
xy2.set(2, ((yp2.get(1)-yp2.get(2))*(x-xc2)
+ (xp2.get(2)-xp2.get(1))*(y-yc2))/(2.0*Area2) );
// Evaluate monomials at locations xy1
double xi = xy1.get(1);
double xi2 = xi*xi;
double xi3 = xi*xi2;
double xi4 = xi*xi3;
double eta = xy1.get(2);
double eta2 = eta*eta;
double eta3 = eta*eta2;
double eta4 = eta*eta3;
switch( NumBasisOrder )
{
case 5: // fifth order
mu1.set(15, eta4 );
mu1.set(14, xi4 );
mu1.set(13, xi2*eta2 );
mu1.set(12, eta3*xi );
mu1.set(11, xi3*eta );
case 4: // fourth order
mu1.set(10, eta3 );
mu1.set(9, xi3 );
mu1.set(8, xi*eta2 );
mu1.set(7, eta*xi2 );
case 3: // third order
mu1.set(6, eta2 );
mu1.set(5, xi2 );
mu1.set(4, xi*eta );
case 2: // second order
mu1.set(3, eta );
mu1.set(2, xi );
case 1: // first order
mu1.set(1, 1.0 );
break;
}
// Evaluate monomials at locations xy2
xi = xy2.get(1);
xi2 = xi*xi;
xi3 = xi*xi2;
xi4 = xi*xi3;
eta = xy2.get(2);
eta2 = eta*eta;
eta3 = eta*eta2;
eta4 = eta*eta3;
switch( NumBasisOrder )
{
case 5: // fifth order
mu2.set(15, eta4 );
mu2.set(14, xi4 );
mu2.set(13, xi2*eta2 );
mu2.set(12, eta3*xi );
mu2.set(11, xi3*eta );
case 4: // fourth order
mu2.set(10, eta3 );
mu2.set(9, xi3 );
mu2.set(8, xi*eta2 );
mu2.set(7, eta*xi2 );
case 3: // third order
mu2.set(6, eta2 );
mu2.set(5, xi2 );
mu2.set(4, xi*eta );
case 2: // second order
mu2.set(3, eta );
mu2.set(2, xi );
case 1: // first order
mu2.set(1, 1.0 );
break;
}
// Finally, convert monomials to Legendre Polys
// on the two adjacent triangle
for (int k=1; k<=NumBasisComps; k++)
{
double tmp1 = 0.0;
double tmp2 = 0.0;
for (int j=1; j<=k; j++)
{
tmp1 = tmp1 + Mmat[k-1][j-1]*mu1.get(j);
tmp2 = tmp2 + Mmat[k-1][j-1]*mu2.get(j);
}
EdgeData->GL_phi_left->set(i,m,k, tmp1 );
EdgeData->GL_phi_right->set(i,m,k, tmp2 );
}
}
}
}