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Strange numerical_error says "yPlusaMulx: y and x does not have the same length"

Posted Jul 26, 2012, 5:21 a.m. EDT Computational Fluid Dynamics (CFD), Studies & Solvers Version 3.5a, Version 4.3 1 Reply

Ashwini Sharma
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I have a strange error message on simulating my model in Comsol, as follows:

Error:
Time 1.339427726604487e-005:
Nonlinear solver did not converge.
Internal_numerical_error
yPlusaMulx: y and x does not have the same length.
Last time step is not converged.

It occurs only when I start to work on a remote desktop. If I don't do any remote desktop, the code runs very smoothly and is able to converge. My model is a 2D transient model.

Please suggest.

Thanks in advance,
Ashwini
1 Reply Last Post Aug 29, 2012, 9:45 p.m. EDT
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Hello Ashwini Sharma

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Argus Sun
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Posted: 1 decade ago Aug 29, 2012, 9:45 p.m. EDT
Had the same problem with a stationary portion of a convective-diffusion problem. I think it's notation used in headers for iterative solvers. Might want to try GMRES or FGMRES.
Had the same problem with a stationary portion of a convective-diffusion problem. I think it's notation used in headers for iterative solvers. Might want to try GMRES or FGMRES.

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