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[DesignModeler] Modelling mixing tank using MRF approach

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Old   March 17, 2015, 06:26
Default Modelling mixing tank using MRF approach
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Nataliia Tatyanko
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Hi all. Please help me.
I need to get velocity field around mixer in a mixing tank. The goal is to determine dead zones. So, I import geometry of mixer with outside cylinder in DM. Than I use "enclosure" tool to create tank zone. After substracting ("cylinder" minus "mixer geometry") I get two parts. One part is a rotating cylinder with emptiness inside in the form of mixer. And the second part is square tank, that surrounds rotating frame.
Main options:
- steady state;
- two cell zones, one of them is rotating with speed 26 rpm;
- interface between rotating and stationary zone;
- realizable k-e model;
- no inlets and outlets, only wall no-slip boundaries

I have some doubts about my geometry model. I read some article, that says about simulating blades like zero thickness wall. But in my case it is impossible to enclosure zero thickness surface. How to simulate rotating frame in my case? Thank you in advance for any answer.
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Last edited by Natali; March 19, 2015 at 01:46.
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cell zones, mixer, mixing tank, mrf, rotating frame

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