double massbal_getRunoffError()
//
// Input: none
// Output: none
// Purpose: computes runoff mass balance error.
//
{
int i, j;
double finalStorage;
double totalInflow;
double totalOutflow;
// --- find final storage on all subcatchments
RunoffTotals.finalStorage = 0.0;
RunoffTotals.finalSnowCover = 0.0;
for (j = 0; j < Nobjects[SUBCATCH]; j++)
{
finalStorage = 0.0;
for ( i = IMPERV0; i <= PERV; i++)
{
finalStorage += Subcatch[j].subArea[i].depth *
Subcatch[j].subArea[i].fArea;
}
RunoffTotals.finalStorage += finalStorage * Subcatch[j].area;
RunoffTotals.finalSnowCover += snow_getSnowCover(j);
}
// --- get snow removed from system
RunoffTotals.snowRemoved = Snow.removed;
// --- compute % difference between total inflow and outflow
totalInflow = RunoffTotals.rainfall +
RunoffTotals.initStorage +
RunoffTotals.initSnowCover;
totalOutflow = RunoffTotals.evap +
RunoffTotals.infil +
RunoffTotals.runoff +
RunoffTotals.snowRemoved +
RunoffTotals.finalStorage +
RunoffTotals.finalSnowCover;
RunoffTotals.pctError = 0.0;
if ( fabs(totalInflow - totalOutflow) < 1.0 )
{
RunoffTotals.pctError = TINY;
}
else if ( totalInflow > 0.0 )
{
RunoffTotals.pctError = 100.0 * (1.0 - totalOutflow / totalInflow);
}
else if ( totalOutflow > 0.0 )
{
RunoffTotals.pctError = 100.0 * (totalInflow / totalOutflow - 1.0);
}
RunoffError = RunoffTotals.pctError;
return RunoffTotals.pctError;
}
int massbal_open()
//
// Input: none
// Output: returns error code
// Purpose: opens and initializes mass balance continuity checking.
//
{
int j, n;
// --- initialize global continuity errors
RunoffError = 0.0;
GwaterError = 0.0;
FlowError = 0.0;
QualError = 0.0;
// --- initialize runoff totals
RunoffTotals.rainfall = 0.0;
RunoffTotals.evap = 0.0;
RunoffTotals.infil = 0.0;
RunoffTotals.runoff = 0.0;
RunoffTotals.runon = 0.0; //(5.1.008)
RunoffTotals.drains = 0.0; //(5.1.008)
RunoffTotals.snowRemoved = 0.0;
RunoffTotals.initStorage = 0.0;
RunoffTotals.initSnowCover = 0.0;
TotalArea = 0.0;
for (j = 0; j < Nobjects[SUBCATCH]; j++)
{
RunoffTotals.initStorage += subcatch_getStorage(j);
RunoffTotals.initSnowCover += snow_getSnowCover(j);
TotalArea += Subcatch[j].area;
}
// --- initialize groundwater totals
GwaterTotals.infil = 0.0;
GwaterTotals.upperEvap = 0.0;
GwaterTotals.lowerEvap = 0.0;
GwaterTotals.lowerPerc = 0.0;
GwaterTotals.gwater = 0.0;
GwaterTotals.initStorage = 0.0;
GwaterTotals.finalStorage = 0.0;
for ( j = 0; j < Nobjects[SUBCATCH]; j++ )
{
GwaterTotals.initStorage += gwater_getVolume(j) * Subcatch[j].area;
}
// --- initialize node flow & storage totals
FlowTotals.dwInflow = 0.0;
FlowTotals.wwInflow = 0.0;
FlowTotals.gwInflow = 0.0;
FlowTotals.iiInflow = 0.0;
FlowTotals.exInflow = 0.0;
FlowTotals.flooding = 0.0;
FlowTotals.outflow = 0.0;
FlowTotals.evapLoss = 0.0;
FlowTotals.seepLoss = 0.0;
FlowTotals.reacted = 0.0;
FlowTotals.initStorage = 0.0;
for (j = 0; j < Nobjects[NODE]; j++)
FlowTotals.initStorage += Node[j].newVolume;
for (j = 0; j < Nobjects[LINK]; j++)
FlowTotals.initStorage += Link[j].newVolume;
StepFlowTotals = FlowTotals;
// --- add contribution of minimum surface area (i.e., manhole area)
// to initial storage under dynamic wave routing
if ( RouteModel == DW )
{
for (j = 0; j < Nobjects[NODE]; j++)
{
if ( Node[j].type != STORAGE &&
Node[j].initDepth <= Node[j].crownElev - Node[j].invertElev ) //(5.1.007)
FlowTotals.initStorage += Node[j].initDepth * MinSurfArea;
}
}
// --- initialize arrays to null
LoadingTotals = NULL;
QualTotals = NULL;
StepQualTotals = NULL;
NodeInflow = NULL;
NodeOutflow = NULL;
// --- allocate memory for WQ washoff continuity totals
n = Nobjects[POLLUT];
if ( n > 0 )
{
LoadingTotals = (TLoadingTotals *) calloc(n, sizeof(TLoadingTotals));
if ( LoadingTotals == NULL )
{
report_writeErrorMsg(ERR_MEMORY, "");
return ErrorCode;
}
for (j = 0; j < n; j++)
{
LoadingTotals[j].initLoad = massbal_getBuildup(j);
LoadingTotals[j].buildup = 0.0;
LoadingTotals[j].deposition = 0.0;
LoadingTotals[j].sweeping = 0.0;
LoadingTotals[j].infil = 0.0;
LoadingTotals[j].bmpRemoval = 0.0;
LoadingTotals[j].runoff = 0.0;
LoadingTotals[j].finalLoad = 0.0;
}
}
// --- allocate memory for nodal WQ continuity totals
if ( n > 0 )
{
QualTotals = (TRoutingTotals *) calloc(n, sizeof(TRoutingTotals));
StepQualTotals = (TRoutingTotals *) calloc(n, sizeof(TRoutingTotals));
if ( QualTotals == NULL || StepQualTotals == NULL )
{
report_writeErrorMsg(ERR_MEMORY, "");
return ErrorCode;
}
}
// --- initialize WQ totals
for (j = 0; j < n; j++)
{
QualTotals[j].dwInflow = 0.0;
QualTotals[j].wwInflow = 0.0;
QualTotals[j].gwInflow = 0.0;
QualTotals[j].exInflow = 0.0;
QualTotals[j].flooding = 0.0;
QualTotals[j].outflow = 0.0;
QualTotals[j].evapLoss = 0.0;
QualTotals[j].seepLoss = 0.0;
QualTotals[j].reacted = 0.0;
QualTotals[j].initStorage = massbal_getStoredMass(j);
}
// --- initialize totals used over a single time step
massbal_initTimeStepTotals();
// --- allocate memory for nodal flow continuity
if ( Nobjects[NODE] > 0 )
{
NodeInflow = (double *) calloc(Nobjects[NODE], sizeof(double));
if ( NodeInflow == NULL )
{
report_writeErrorMsg(ERR_MEMORY, "");
return ErrorCode;
}
NodeOutflow = (double *) calloc(Nobjects[NODE], sizeof(double));
if ( NodeOutflow == NULL )
{
report_writeErrorMsg(ERR_MEMORY, "");
return ErrorCode;
}
for (j = 0; j < Nobjects[NODE]; j++) NodeInflow[j] = Node[j].newVolume;
}
return ErrorCode;
}
int massbal_open()
//
// Input: none
// Output: returns error code
// Purpose: opens and initializes mass balance continuity checking.
//
{
int j, n;
// --- initialize global continuity errors
RunoffError = 0.0;
GwaterError = 0.0;
FlowError = 0.0;
QualError = 0.0;
// --- initialize runoff totals
RunoffTotals.rainfall = 0.0;
RunoffTotals.evap = 0.0;
RunoffTotals.infil = 0.0;
RunoffTotals.runoff = 0.0;
RunoffTotals.snowRemoved = 0.0;
RunoffTotals.initStorage = 0.0;
RunoffTotals.initSnowCover = 0.0;
TotalArea = 0.0;
for (j = 0; j < Nobjects[SUBCATCH]; j++)
{
RunoffTotals.initSnowCover += snow_getSnowCover(j);
TotalArea += Subcatch[j].area;
}
// --- initialize groundwater totals
GwaterTotals.infil = 0.0;
GwaterTotals.upperEvap = 0.0;
GwaterTotals.lowerEvap = 0.0;
GwaterTotals.lowerPerc = 0.0;
GwaterTotals.gwater = 0.0;
GwaterTotals.initStorage = 0.0;
GwaterTotals.finalStorage = 0.0;
for ( j = 0; j < Nobjects[SUBCATCH]; j++ )
{
GwaterTotals.initStorage += gwater_getVolume(j) * Subcatch[j].area;
}
// --- initialize node flow & storage totals
FlowTotals.dwInflow = 0.0;
FlowTotals.wwInflow = 0.0;
FlowTotals.gwInflow = 0.0;
FlowTotals.iiInflow = 0.0;
FlowTotals.exInflow = 0.0;
FlowTotals.floodingNumNodes = 0.0;
FlowTotals.outflow = 0.0;
FlowTotals.pumpedVol = 0.0;
FlowTotals.initStorage = 0.0;
for (j = 0; j < Nobjects[NODE]; j++)
FlowTotals.initStorage += Node[j].newVolume;
for (j = 0; j < Nobjects[LINK]; j++)
FlowTotals.initStorage += Link[j].newVolume;
StepFlowTotals = FlowTotals;
// --- initialize arrays to null
LoadingTotals = NULL;
QualTotals = NULL;
StepQualTotals = NULL;
NodeInflow = NULL;
NodeOutflow = NULL;
// --- allocate memory for WQ washoff continuity totals
n = Nobjects[POLLUT];
if ( n > 0 )
{
LoadingTotals = (TLoadingTotals *) calloc(n, sizeof(TLoadingTotals));
if ( LoadingTotals == NULL )
{
report_writeErrorMsg(ERR_MEMORY, "");
return ErrorCode;
}
for (j = 0; j < n; j++)
{
LoadingTotals[j].initLoad = massbal_getBuildup(j);
LoadingTotals[j].buildup = 0.0;
LoadingTotals[j].deposition = 0.0;
LoadingTotals[j].sweeping = 0.0;
LoadingTotals[j].infil = 0.0;
LoadingTotals[j].bmpRemoval = 0.0;
LoadingTotals[j].runoff = 0.0;
LoadingTotals[j].finalLoad = 0.0;
}
}
// --- allocate memory for nodal WQ continuity totals
if ( n > 0 )
{
QualTotals = (TRoutingTotals *) calloc(n, sizeof(TRoutingTotals));
StepQualTotals = (TRoutingTotals *) calloc(n, sizeof(TRoutingTotals));
if ( QualTotals == NULL || StepQualTotals == NULL )
{
report_writeErrorMsg(ERR_MEMORY, "");
return ErrorCode;
}
}
// --- initialize WQ totals
for (j = 0; j < n; j++)
{
QualTotals[j].dwInflow = 0.0;
QualTotals[j].wwInflow = 0.0;
QualTotals[j].gwInflow = 0.0;
QualTotals[j].exInflow = 0.0;
QualTotals[j].floodingNumNodes = 0.0;
QualTotals[j].outflow = 0.0;
QualTotals[j].pumpedVol = 0.0;
QualTotals[j].initStorage = 0.0;
}
// --- initialize totals used over a single time step
massbal_initTimeStepTotals();
// --- allocate memory for nodal flow continuity
if ( Nobjects[NODE] > 0 )
{
NodeInflow = (double *) calloc(Nobjects[NODE], sizeof(double));
if ( NodeInflow == NULL )
{
report_writeErrorMsg(ERR_MEMORY, "");
return ErrorCode;
}
NodeOutflow = (double *) calloc(Nobjects[NODE], sizeof(double));
if ( NodeOutflow == NULL )
{
report_writeErrorMsg(ERR_MEMORY, "");
return ErrorCode;
}
for (j = 0; j < Nobjects[NODE]; j++) NodeInflow[j] = Node[j].newVolume;
}
return ErrorCode;
}
