CFD Online Discussion Forums

CFD Online Discussion Forums (http://www.cfd-online.com/Forums/)
-   CFX (http://www.cfd-online.com/Forums/cfx/)
-   -   movement of bed river soil (http://www.cfd-online.com/Forums/cfx/93892-movement-bed-river-soil.html)

ashakn October 29, 2011 16:14

movement of bed river soil
 
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

ghorrocks October 30, 2011 05:31

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?

ashakn October 30, 2011 07:35

hi ghorrocks
i want to simulate scouring of a bed around bridge pier. i dont know how can i do that in cfx.

ghorrocks October 30, 2011 17:05

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.

ashakn October 30, 2011 19:18

define time
 
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?


All times are GMT -4. The time now is 07:19.