setaux.f.html | |
Source file: setaux.f | |
Directory: /Users/rjl/git/rjleveque/clawpack-4.6.3/book/chap9/acoustics/layered | |
Converted: Mon Jan 21 2013 at 20:15:48 using clawcode2html | |
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c ============================================ subroutine setaux(maxmx,mbc,mx,xlower,dx,maux,aux) c ============================================ c c # set auxiliary arrays c # variable coefficient acoustics c # aux(i,1) = impedance Z in i'th cell c # aux(i,2) = sound speed c in i'th cell c c c # rho value for i-1 < x < i is determined by rho(i) c # input from setprob.rho in setprob.f c c implicit double precision (a-h,o-z) dimension aux(1-mbc:maxmx+mbc, 2) common /comaux/ rho(1000) open(unit=31,file='fort.aux',status='unknown',form='formatted') c do i=1-mbc,mx+mbc xcell = xlower + (i-0.5d0)*dx c # truncate to an integer to determine which layer xcell is in: ix = xcell + 1 if (ix.lt.1) ix = 1 aux(i,2) = 1.d0 aux(i,1) = rho(ix)*aux(i,2) c # uniform for comparison: c aux(i,1) = aux(i,2) enddo do i=1,mx write(31,701) aux(i,1), aux(i,2) 701 format(2e16.6) enddo close(unit=31) c return end