qinit.f.html | |
Source file: qinit.f | |
Directory: /Users/rjl/git/rjleveque/clawpack-4.6.3/doc/sphinx/example-acoustics-1d | |
Converted: Mon Jan 21 2013 at 20:15:52 using clawcode2html | |
This documentation file will not reflect any later changes in the source file. |
c c c ========================================================= subroutine qinit(maxmx,meqn,mbc,mx,xlower,dx,q,maux,aux) c ========================================================= c c # Set initial conditions for q. c # Pulse in pressure, zero velocity c c implicit double precision (a-h,o-z) dimension q(1-mbc:maxmx+mbc, meqn) dimension aux(1-mbc:maxmx+mbc, *) common /cqinit/ beta c c do 150 i=1,mx xcell = xlower + (i-0.5d0)*dx q(i,1) = dexp(-50 * (xcell-0.3d0)**2) & * dcos(20.d0*(xcell-0.3d0)) if (xcell .gt. 0.30d0) q(i,1) = 0.d0 q(i,2) = 0.d0 150 continue c return end