wave orbital velocity difference between ROMS and Swan

General scientific issues regarding ROMS

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wamamy
Posts: 4
Joined: Mon Jun 13, 2016 1:28 pm
Location: Ocean University of China

wave orbital velocity difference between ROMS and Swan

#1 Unread post by wamamy »

Hello all,

I'm using the COAWST to simulate the sediment transport process. When I turn on the CPP option SSW_CALC_UB, the wave induced bottom stress is much bigger than the result of turning off the CPP option. I know when I turn on that option, ROMS will recalculate the wave bottom orbital velocity(Uwave_rms) based on the wave height and wave frequency, But I'm wondering how the SWAN calculate the Uwave_rms? Why there are so big difference between those two results? Thanks very much.

Happy modeling.

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