[Getdp] absorbing boundary condition

[Lin Ji]

It means the partial derivatives of 'u' to those variables.

Lin

On Jul 26,  8:07pm, Christophe Geuzaine wrote:
> Subject: Re: [Getdp] absorbing boundary condition
> Lin Ji wrote:
> >
> > 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
> >
>
> What's the meaning of the subscripts?
>
> --
> Christophe Geuzaine
>
> Tel: 32 (0) 4 366 37 10    http://geuz.org
> Fax: 32 (0) 4 366 29 10    mailto:Christophe.Geuzaine at ulg.ac.be
>-- End of excerpt from Christophe Geuzaine



-- 
Dept. of Math., RPI
518-276,2184(work)
518-271,4486(home)