k-epsilon model with solidification model

March 4, 2009, 17:41

hi,

I am modeling a solidification problem with standard k-epsilon model for the turbulence. Strangely I am getting the "Turbulent viscosity ratio limited" problem in the solidified region of the domain. I don't know if it makes any sense but apparently it is giving me wrong results.

Can anyone help me out with this?

JoHE · August 5, 2009, 11:52

I am looking into the solidification issue now and happens to see this. Don't understand the error message but the k-e model should be under the assumption of isotropic which may not be the case in mushy zone. Besides, the present of dendrite networks in the solidification zone means the flow motion is very restricted. Is there is model to treat that effect?

ashish1676 · May 17, 2014, 12:08

Quote:

Originally Posted by Diane
;157143

hi,

I am modeling a solidification problem with standard k-epsilon model for the turbulence. Strangely I am getting the "Turbulent viscosity ratio limited" problem in the solidified region of the domain. I don't know if it makes any sense but apparently it is giving me wrong results.

Can anyone help me out with this?

i receiving same problem.can u got the solution..please reply

March 4, 2009, 17:41	k-epsilon model with solidification model	#1
Diane Guest Posts: n/a	hi, I am modeling a solidification problem with standard k-epsilon model for the turbulence. Strangely I am getting the "Turbulent viscosity ratio limited" problem in the solidified region of the domain. I don't know if it makes any sense but apparently it is giving me wrong results. Can anyone help me out with this?

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August 5, 2009, 11:52		#2
JoHE New Member Join Date: Aug 2009 Posts: 1 Rep Power: 0	I am looking into the solidification issue now and happens to see this. Don't understand the error message but the k-e model should be under the assumption of isotropic which may not be the case in mushy zone. Besides, the present of dendrite networks in the solidification zone means the flow motion is very restricted. Is there is model to treat that effect?