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movement of bed river soil

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Old   October 29, 2011, 16:14
Default movement of bed river soil
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ashkan
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hi friends
i am working about movement of soil particles from bed river when water flows with high velocity in river.
how can i define this soil of bed river to simulate this movement??
i am really confused. any body know that?

thanks a lot
ashkan
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Old   October 30, 2011, 05:31
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Glenn Horrocks
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Do you want to include scouring of a bed of soil and/or deposition of the soil to form new shoals? Or just the motion of the soil in the moving water?
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Old   October 30, 2011, 07:35
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hi ghorrocks
i want to simulate scouring of a bed around bridge pier. i dont know how can i do that in cfx.
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Old   October 30, 2011, 17:05
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CFX cannot simulate scouring directly. It does not have a physical model built into it to handle this. You may be able to use the fluidised bed models but I doubt it as it was not developed for this purpose.

The best approach would be to either couple CFX with a DEM model such as EDEM, or to use a different CFD code with scouring models built in.
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Old   October 30, 2011, 19:18
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thanks my friend
you helped me. i have another question. how can i define the 35 minutes time for my simulation? i want to see the differences between simulating in 2th minute and in 15th and 35th minutes. so how can i simulate for 35 min and then extract 2th and 15th min from that simulation?
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