Erroneous node numeration, mbndg > numnu

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tonireg
Posts: 11
Joined: Fri Jun 10, 2016 8:50 am

Erroneous node numeration, mbndg > numnu

Post by tonireg »

Hello,
I'm new with GiD and I need some help please.

I attached a problem I have to solve in this topic.

To solve it, I imposed initial unknown temperatures on both left and right sides of my geometry (20°C and 10°C respectively), initial unknown pressure on the right side (0.1 MPa), and a flux B.C on the left side with a prescribed pressure (0.2 MPa with an increment of 0.01).

I set the material conditions so as to make it a rockfill, with mass balance of water and energy balance equations to solve.

But I get the error message "Erroneous node numeration, mbndg > numnu". What does it mean and what should I do?
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escolano
Posts: 1918
Joined: Sun Sep 05, 1982 10:51 pm

Re: Erroneous node numeration, mbndg > numnu

Post by escolano »

The error is raised by the exe of code_bright, I don't know its exact meaning.

a) Maybe the nodes numeration is not consecutive and this could be a problem for code_bright:
(the amount o nodes [GiD_Info Mesh NumNodes] different of the maximum id of nodes [GiD_Info Mesh MaxNumNodes])
Try to renumber the mesh in GiD: in view mesh mode use Utilities->Renumber

b) maybe there is no memory space to use a direct LU solver, try to use and iterative with sparse storage:
Data->Problem data: Solution strategy - Solver type: iterative
tonireg
Posts: 11
Joined: Fri Jun 10, 2016 8:50 am

Re: Erroneous node numeration, mbndg > numnu

Post by tonireg »

Thank you very much! It was a mesh problem.
Though I can't find the Renumber label.
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amelendo
Posts: 57
Joined: Tue Sep 16, 2014 2:20 pm

Re: Erroneous node numeration, mbndg > numnu

Post by amelendo »

Current version of GiD has the option inside of Utilities->Renumber.
Which version are you using?
tonireg
Posts: 11
Joined: Fri Jun 10, 2016 8:50 am

Re: Erroneous node numeration, mbndg > numnu

Post by tonireg »

I am using the latest version.
I didn't know how to remember, I found the command.
Thank you very much.
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