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TOPIC: Height of surge increasing with added layers

Height of surge increasing with added layers 4 months 3 weeks ago #45101

  • e.roome
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Hi,

I am modelling a surge in T3D. With 3 vertical layers I get a realistic surge (approx equal to the water level change from the inverse barometer equation). However, when I add more layer e.g. 10, the surge height becomes greater. Does anyone know the explanation behind this?

Do I just need to further reduce the timestep?

cheers,
Ed
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Height of surge increasing with added layers 4 months 1 week ago #45147

  • pham
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Hello Ed,

By increasing the number of layers, you change the modelling. You may have to calibrate it.

Chi-Tuan
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