movement of bed river soil

ashakn · October 29, 2011, 16:14

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, 04:31

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, 06:35

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, 16:05

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, 18:18

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?

October 29, 2011, 16:14	movement of bed river soil	#1
ashakn New Member ashkan Join Date: Oct 2011 Posts: 6 Rep Power: 14	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

October 30, 2011, 18:18	define time	#5
ashakn New Member ashkan Join Date: Oct 2011 Posts: 6 Rep Power: 14	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?

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Fluidized bed modeling	Kartus	CFX	9	June 30, 2011 04:41
how to model heat transfer inside a slow moving bed?	bigfans	FLUENT	1	October 9, 2009 00:12
Bed lifting	Fatnes	CFX	1	August 22, 2009 06:00
Flow of chemicals through soil bed	umesh	FLUENT	3	May 29, 2003 19:55
Please help me to simulate a river using CFD-ACE+	Sas	Main CFD Forum	0	August 27, 2002 20:51

October 30, 2011, 04:31		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,703 Rep Power: 143	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?

October 30, 2011, 06:35		#3
ashakn New Member ashkan Join Date: Oct 2011 Posts: 6 Rep Power: 14	hi ghorrocks i want to simulate scouring of a bed around bridge pier. i dont know how can i do that in cfx.

October 30, 2011, 16:05		#4
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,703 Rep Power: 143	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.