# How to calculate suspended sediment concentration ?

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 December 14, 2009, 02:12 How to calculate suspended sediment concentration ? #1 New Member   linfangcai Join Date: May 2009 Posts: 9 Rep Power: 17 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 !

 January 13, 2010, 01:42 #2 New Member   Join Date: Jan 2010 Posts: 2 Rep Power: 0 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.

 January 18, 2010, 07:25 #3 Member   Armen A. Ghirghidov Join Date: Mar 2009 Posts: 50 Rep Power: 17 Another question is how can I set at boundary different sediment concentration in vertical direction? Thanks for reply. Regards, Ghirghidov

January 20, 2010, 11:26
#4
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michael barkhudarov
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Location: Sante Fe, New Mexico, USA
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Quote:
 Originally Posted by Ghirghidov 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

January 20, 2010, 11:28
#5
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michael barkhudarov
Join Date: Mar 2009
Location: Sante Fe, New Mexico, USA
Posts: 336
Rep Power: 18
Quote:
 Originally Posted by Ghirghidov 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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