Mixing tanks

February 2, 2006, 03:48

I need some help with a simulation of a mixing tank. It is a mixing tank with some wall jets on one side and there is a hole in the bottom of the tank. I have used k-e and RSM for the simulations but the model does not agree with the experimental data. It does not spin around the hole as observed in the experimental. Any idea of how I can change the model for simulating correctly this swirling flow around the hole.

Thanks a lot

Ana

February 2, 2006, 03:52

Is your mesh enough fine around the hole?

February 2, 2006, 04:03

Yes I think so, although I can try to refine it more around the hole. The main problem is that water flow almost directly towards the hole instead of swirling around it, as I measured during the experimental work. I was thinking that maybe I should change the bc at the outlet. Any idea?

Thanks a lot!!!

Ana

February 2, 2006, 10:07

When you compute some pathlines, what do you see?

February 2, 2006, 03:48	Mixing tanks	#1
Ana Guest Posts: n/a	I need some help with a simulation of a mixing tank. It is a mixing tank with some wall jets on one side and there is a hole in the bottom of the tank. I have used k-e and RSM for the simulations but the model does not agree with the experimental data. It does not spin around the hole as observed in the experimental. Any idea of how I can change the model for simulating correctly this swirling flow around the hole. Thanks a lot Ana

February 2, 2006, 03:52	Re: Mixing tanks	#2
HVN Guest Posts: n/a	Is your mesh enough fine around the hole?

February 2, 2006, 04:03	Re: Mixing tanks	#3
Ana Guest Posts: n/a	Yes I think so, although I can try to refine it more around the hole. The main problem is that water flow almost directly towards the hole instead of swirling around it, as I measured during the experimental work. I was thinking that maybe I should change the bc at the outlet. Any idea? Thanks a lot!!! Ana

February 2, 2006, 10:07	Re: Mixing tanks	#4
HVN Guest Posts: n/a	When you compute some pathlines, what do you see?

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Problem with Mixing plane	Mitpostdoc	FLUENT	0	July 26, 2011 14:31
Meshing a Mixing Plane using ICEM	Will Anderson	FLUENT	0	November 6, 2010 17:08
problem with MFR model for multiphase mixing tanks	Srinivas	Main CFD Forum	1	November 7, 2005 14:16
IS ANY ONE USING MixSim Package for mixing tanks	Srinivas	FLUENT	0	October 18, 2005 02:11
Mixing plane geometry definition	Hbet	FLUENT	0	January 18, 2002 07:16