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Lax-Wendroff solve hyperbolic equations

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Old   July 14, 2003, 04:53
Default Lax-Wendroff solve hyperbolic equations
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I'm trying to solve a standard hyperbolic equations with lax-wendroff method, but after two thousand timesteps, got divergence result. I'm not sure if the BC manipulation is right.



with 'u' is velocity, 'v' is stress. t:[0,nt] z:[0,nz]

set B.C.:at point z=0, u=0

at point z=nz, v=0

I.C.: u=0;v=0;except at point uz=nz/2, u=1.

difference with Lax-Wendroff method. because 'a=5000', so set 'dt/dz=1e-4' to stablize L-W method.

at boudnary set





does the boudnary setting right?

thanks . Zyf
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