| |
| c--------------------------------------------------------------------- |
| c--------------------------------------------------------------------- |
| |
| subroutine txinvr |
| |
| c--------------------------------------------------------------------- |
| c--------------------------------------------------------------------- |
| |
| c--------------------------------------------------------------------- |
| c block-diagonal matrix-vector multiplication |
| c--------------------------------------------------------------------- |
| |
| include 'header.h' |
| |
| integer c, i, j, k |
| double precision t1, t2, t3, ac, ru1, uu, vv, ww, r1, r2, r3, |
| > r4, r5, ac2inv |
| |
| c--------------------------------------------------------------------- |
| c loop over all cells owned by this node |
| c--------------------------------------------------------------------- |
| do c = 1, ncells |
| do k = start(3,c), cell_size(3,c)-end(3,c)-1 |
| do j = start(2,c), cell_size(2,c)-end(2,c)-1 |
| do i = start(1,c), cell_size(1,c)-end(1,c)-1 |
| |
| ru1 = rho_i(i,j,k,c) |
| uu = us(i,j,k,c) |
| vv = vs(i,j,k,c) |
| ww = ws(i,j,k,c) |
| ac = speed(i,j,k,c) |
| ac2inv = ainv(i,j,k,c)*ainv(i,j,k,c) |
| |
| r1 = rhs(i,j,k,1,c) |
| r2 = rhs(i,j,k,2,c) |
| r3 = rhs(i,j,k,3,c) |
| r4 = rhs(i,j,k,4,c) |
| r5 = rhs(i,j,k,5,c) |
| |
| t1 = c2 * ac2inv * ( qs(i,j,k,c)*r1 - uu*r2 - |
| > vv*r3 - ww*r4 + r5 ) |
| t2 = bt * ru1 * ( uu * r1 - r2 ) |
| t3 = ( bt * ru1 * ac ) * t1 |
| |
| rhs(i,j,k,1,c) = r1 - t1 |
| rhs(i,j,k,2,c) = - ru1 * ( ww*r1 - r4 ) |
| rhs(i,j,k,3,c) = ru1 * ( vv*r1 - r3 ) |
| rhs(i,j,k,4,c) = - t2 + t3 |
| rhs(i,j,k,5,c) = t2 + t3 |
| end do |
| end do |
| end do |
| end do |
| |
| return |
| end |
| |
| |
