void DustyGasTransport::eval_H_matrix() {
updateBinaryDiffCoeffs();
updateKnudsenDiffCoeffs();
int k,l,j;
doublereal sum;
for (k = 0; k < m_nsp; k++) {
// evaluate off-diagonal terms
for (l = 0; l < m_nsp; l++) m_multidiff(k,l) = -m_x[k]/m_d(k,l);
// evaluate diagonal term
sum = 0.0;
for (j = 0; j < m_nsp; j++) if (j != k) sum += m_x[j]/m_d(k,j);
m_multidiff(k,k) = 1.0/m_dk[k] + sum;
}
}
void DustyGasTransport::eval_H_matrix()
{
updateBinaryDiffCoeffs();
updateKnudsenDiffCoeffs();
for (size_t k = 0; k < m_nsp; k++) {
// evaluate off-diagonal terms
for (size_t j = 0; j < m_nsp; j++) {
m_multidiff(k,j) = -m_x[k]/m_d(k,j);
}
// evaluate diagonal term
double sum = 0.0;
for (size_t j = 0; j < m_nsp; j++) {
if (j != k) {
sum += m_x[j]/m_d(k,j);
}
}
m_multidiff(k,k) = 1.0/m_dk[k] + sum;
}
}