CFX can simulate sediment transport in reservoir

yaseen wsu · May 8, 2016, 04:15

Hello
CFX can simulate three phase (water+air+sediment) sediment transport in reservoir as shown in attached figure I want to find the rate of sediment pass within bottom pipe (bottom outlet) with water.
http://www.cfd-online.com/Forums/att...1&d=1462691684

ghorrocks · May 8, 2016, 06:38

This will be a tricky model, but I think you can do it in CFX. You can't use lagrangian particle tracking as that does not include a packing model. But the maximum packing fraction of maybe the fluidised bed models in the eularian particle model may be suitable.

yaseen wsu · May 8, 2016, 11:00

Quote:

Originally Posted by ghorrocks

This will be a tricky model, but I think you can do it in CFX. You can't use lagrangian particle tracking as that does not include a packing model. But the maximum packing fraction of maybe the fluidised bed models in the eularian particle model may be suitable.

thanks for your reply
the problem is how to define sediment in the fluid domain?, as in free surface we have air and water with there density, is that required to determine height of sediment in the reservoir? how ?

ghorrocks · May 8, 2016, 20:03

My post gave two options: Use the maximum packing fraction of a eularian particle model to model the bed; or use the fluidised bed model (which is also a eularian particle model by the way).

Neither of these models are designed to do exactly what you want so you are going to have to adapt them a bit. You are also going to have to make your own assessment of whether they are appropriate for your case.

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May 8, 2016, 06:38		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,844 Rep Power: 144	This will be a tricky model, but I think you can do it in CFX. You can't use lagrangian particle tracking as that does not include a packing model. But the maximum packing fraction of maybe the fluidised bed models in the eularian particle model may be suitable.

May 8, 2016, 20:03		#4
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,844 Rep Power: 144	My post gave two options: Use the maximum packing fraction of a eularian particle model to model the bed; or use the fluidised bed model (which is also a eularian particle model by the way). Neither of these models are designed to do exactly what you want so you are going to have to adapt them a bit. You are also going to have to make your own assessment of whether they are appropriate for your case.