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Questions on an impeller simulation with Fluent |
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April 19, 2000, 06:26 |
Questions on an impeller simulation with Fluent
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#1 |
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1-What is a suitable shape to give to the inlet and to the outlet of the computational domain around the blade?
2-In the compressor case, what are the correct boundary conditions to give? 3-Is it always recommended a great grid-point-density in the boundary layer? 4-To obtain a good convergence history what is the best approach: a) to launch fluent in transient mode, using real BC's and conditions ? or b) to begin the calculations launching fluent in euler steady mode, gradually inserting the viscous fluid condition ? 5- For the impeller blade case, what is better: segregated or coupled (implicit or explicit) ? absolute or relative velocity ? 6- What turbulence model should I use ? 7-To have a rotating grid, what is the correct option: moving reference or moving mesh 8-What is the preferred discretization scheme ? What about the second order discretization for the pressure terms ? any helping hint is appreciated thank in advance Angelo D'Ettore |
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May 5, 2000, 14:19 |
Re: Questions on an impeller simulation with Fluent
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#2 |
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6- k-eps should be ok 7- mrf gives quicker results... 5- I would begin with the explicit one with absolute velocity
The defaults to starts actually then change one at a time and see the effects on solution... jy (www.reactor-modeling.com) |
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July 4, 2010, 11:39 |
Mixing tank
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#3 |
New Member
Maryam Amiraftabi
Join Date: Nov 2009
Posts: 9
Rep Power: 17 |
Hello,
please help me, I want to simulate mixing tank by fluent. I define rotating blade as solid, the simulation is 3D, 2 phases without reaction.I want to optimize mixer velocity. the problem is: fluent can not recognize the solid zone and consider water and sand inside of mixer and impeller instead of mixing tank. please help me thanks |
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July 7, 2010, 10:33 |
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#4 | |
New Member
jerry
Join Date: Jul 2010
Posts: 2
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Quote:
I uploaded one file. But It can not display. I used internet explorer 8.0. How can I repair? Or some problems happened to IE8? Rgs |
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July 7, 2010, 11:08 |
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#5 |
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jerry
Join Date: Jul 2010
Posts: 2
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thanks for your time.
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