|June 22, 2010, 12:44||
Turbulent viscosity and shear rate
Join Date: Apr 2010
Posts: 10Rep Power: 8
I'm wondering about the connection between turbulent viscosity and shear rate.
I'm using a non-linear model to define the viscosity of a fiber suspension. When the shear rate is about 200 a turbulent viscosity of 1 Pas should be used. According to the author of the doctoral thesis I've gotten the model from this should correspond to the turbulent viscosity of water.
However when I perform simulations with water the turbulent viscosity in the regions where the shear rate is 200 is about 1/10 of 1 Pas. So I wonder if someone knows the reason for this? Is it because my flow is different than his? I thought water would behave in the same way if the shear rate is the same.
|Thread||Thread Starter||Forum||Replies||Last Post|
|Use of k-epsilon and k-omega Models||Jade M||Main CFD Forum||12||June 2, 2015 13:16|
|UDF Viscosity Depending on Shear Rate||mannobot||FLUENT||0||April 23, 2010 09:46|
|Help - UDF for solid shear viscosity||nbh2801||FLUENT||0||April 21, 2006 07:49|
|shear stress scalar definitions?||Novak Elliott||CFX||0||April 6, 2003 01:45|