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-   -   How to calculate suspended sediment concentration ? (http://www.cfd-online.com/Forums/flow-3d/71052-how-calculate-suspended-sediment-concentration.html)

fang December 14, 2009 03:12

How to calculate suspended sediment concentration ?
 
hi to all: i want to use the sediment scour model.In the initial menu,i set up fluid region 1,but i don't understand how to define suspended sediment concentration.How to calculate suspended sediment concentration ?thank you !

fbmoon January 13, 2010 02:42

Hi, fang

To define the initial suspended sediment concentration, you could fill the box of SS #1 whith initial SS concentration of the tree menu of the Fluid Region 1, ie, Fluid Region 1 -> Scalars -> SS #1. in Initial Tab.

Hope this will help ^^;
Bye.

Ghirghidov January 18, 2010 08:25

Another question is how can I set at boundary different sediment concentration in vertical direction?
Thanks for reply.
Regards, Ghirghidov

MuxaB January 20, 2010 12:26

Quote:

Originally Posted by Ghirghidov (Post 242934)
Another question is how can I set at boundary different sediment concentration in vertical direction?
Thanks for reply.
Regards, Ghirghidov

Armen,

You mean, for example, the suspended concentration varying along the z coordinate? It must be done through a customization, I am afraid.

Michael

MuxaB January 20, 2010 12:28

Quote:

Originally Posted by Ghirghidov (Post 242934)
Another question is how can I set at boundary different sediment concentration in vertical direction?
Thanks for reply.
Regards, Ghirghidov

Another possibility is to setup a flow that can produce such sediment distribution, run it to steady-state and then do the original simulation as a restart from this one, using the steady-state solution as the boundary condition.


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