TELEMAC-MASCARET Forum: Unrealistic results with fine mesh resolution (1/1)

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TOPIC: Unrealistic results with fine mesh resolution

Unrealistic results with fine mesh resolution 5 years 2 weeks ago #34896

Wuppukondur
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Junior Boarder
Posts: 53

Hi,
I'm simulating propagation of solitary wave in a 10m long horizontal bed channel (lab scale) in Telemac 2D using Boussinesq equation. I have run two test cases, one with element size of 3cm and other with 1cm in the mesh. The 3cm mesh gives desired results, while 1cm mesh gives very unrealistic results. I have followed same procedure in setting up the models, yet fine mesh is giving me unrealistic results. I have attached simulation files along with results for comparison. Could you please have alook and let me know if any issues in mesh generation? Many thanks in advance.

Ananth

Attachments:

1cmmeshresults.csv (271KB)
3cmmeshresults.csv (266KB)

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Unrealistic results with fine mesh resolution 5 years 2 weeks ago #34897

Wuppukondur OFFLINE Junior Boarder Posts: 53	Simulation files attached here.
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Unrealistic results with fine mesh resolution 5 years 2 weeks ago #34898

Wuppukondur OFFLINE Junior Boarder Posts: 53	Simulation files attached here. Attachments: 1cm.zip (1,136KB)
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Unrealistic results with fine mesh resolution 5 years 2 weeks ago #34916

mafknaapen OFFLINE Expert Boarder Posts: 157 Thank you received: 62	Did you reduce the time step for the finer mesh?
	Dr Michiel Knaapen Senior Scientist E This email address is being protected from spambots. You need JavaScript enabled to view it. T +44 (0)1491 822399 HR Wallingford, Howbery Park, Wallingford, Oxfordshire OX10 8BA, United Kingdom T +44 (0)1491 835381, F +44 (0)1491 832233 www.hrwallingford.com The administrator has disabled public write access.

Unrealistic results with fine mesh resolution 5 years 1 week ago #34919

Wuppukondur OFFLINE Junior Boarder Posts: 53	Hi Michiel, Yes, I have tried with reduced time step and also with "Desired courant number". But the results do not improve.
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