[Getdp] absorbing boundary condition
Lin Ji
jil at rpi.edu
Thu Jul 26 20:02:51 CEST 2001
Hi, Christophe,
Thank you for your response. For the following rectangular region,
0<x<0.5, -0.5<y<0.5
if we have a source at x = 0, then the 3rd order absorbing boundary condition
on the other three sides read
1. x = 0.5 : -u_{xtt} - u_{ttt} + (1/4)u_{xyy} + (3/4)u_{tyy} = 0
2. y = -0.5 : u_{ytt} - u_{ttt} + (1/4)u_{yxx} + (3/4)u_{txx} = 0
3. y = 0.5 : -u_{ytt} - u_{ttt} - (1/4)u_{yxx} + (3/4)u_{txx} = 0
Thanks,
Lin
--
Dept. of Math., RPI
518-276,2184(work)
518-271,4486(home)