qinit.f.html | |
Source file: qinit.f | |
Directory: /Users/rjl/clawpack_src/clawpack_master/apps/fvmbook/chap10/tvb | |
Converted: Sat Mar 23 2024 at 11:05:05 using clawcode2html | |
This documentation file will not reflect any later changes in the source file. |
c c c ========================================================= subroutine qinit(meqn,mbc,mx,xlower,dx,q,maux,aux) c ========================================================= c c # Set initial conditions for q. c c implicit double precision (a-h,o-z) dimension q(meqn,1-mbc:mx+mbc) dimension aux(maux,1-mbc:mx+mbc) common /comic/ beta,freq common /comlim/ phiM,phiMdx2 c c c # set phiMdx2, needed in limiter. c # phiM set in setprob phiMdx2 = phiM * dx**2 c pi2 = 8.d0*datan(1.d0) !# = 2 * pi do 150 i=1,mx xcell = xlower + (i-0.5d0)*dx c # wave packet q(1,i) = dexp(-beta*(xcell-0.5d0)**2) * dsin(freq*xcell) 150 continue c return end