AMROC Main     Blockstructured Adaptive Mesh Refinement in object-oriented C++


Main Page   Class Hierarchy   Compound List   File List  

Makefile  combl.f  cuser.i  fdisc.f  init2.f  physbd2.f  rpn2eu.f  rpt2eu.f  chk2eu.f  Problem.h  amr_main.C 

applications/euler/2d/Ramp/src/fdisc.f

c
c
c
c     =================================================
      function fdisc(x,y)
c     =================================================

      implicit double precision (a-h,o-z)

      include  "cuser.i"
c
c     # for computing cell averages for initial data that has a
c     # discontinuity along some curve.  fdisc should be negative to the 
c     # left of the curve and positive to the right
c     # idisc specifies the nature of the discontinuity for two
c     # particular cases (a straight line and circle) but this routine
c     # can be modified for any other curve.
c
      go to (10,20) idisc
c
   10 continue
c     # straight line through (x0,y0) with normal (alf,beta) pointing 
c     # into right state
c
      fdisc = (x-x0)*alf + (y-y0)*beta
      return
c
   20 continue
c     # circle of radius r0:
      fdisc = (x-x0)**2 + (y-y0)**2 - r0**2
c
      return
      end


Quickstart     Users Guide     Programmers Reference     Installation      Examples     Download



AMROC Main      Home      Contact
last update: 06/01/04