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#1 |
Guest
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Hi Fluent users, i have a question, like in the geometry the periodicity between the boundaries is a mixed type of translation and rotation.
the boundaries are periodic but in fluent while dealing with boundary conditions, i cant select the boundary as both translation and rotation. any idea as how to handle the conditions if the periodicity is both translation and rotation. thanks in advance |
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#2 | |
New Member
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Quote:
I am intresting this problem too) My mesh in this image SWIRL_STABE.jpg Do anyone have ideas how create both translation and rotation periodic in fluent? Thanks Alex. |
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#3 |
Senior Member
Paritosh Vasava
Join Date: Oct 2012
Location: Lappeenranta, Finland
Posts: 732
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I think you could write a UDF about mesh motion that has both rotation and translation. This along with options about 'mesh motion' in 'Cell Zone Condition' should resolve your problem.
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#4 |
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deepthi
Join Date: Feb 2013
Posts: 8
Rep Power: 12 ![]() |
hi
I am doing 3d modelling of a can combustor using k-e model.If I give mass flow inlet and pressure outlet or pressure inlet and pressure outlet I am getting total pressure at the outlet is more than total pressure at inlet.But there should be a pressure drop in reality in a combustor.Can u help ![]() |
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#5 |
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Thiagu
Join Date: Oct 2012
Location: India
Posts: 60
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Pls check the location / methods (massflow weighted\area weighted average).
# what is inlet mach number (assuming subsonic) # what are teh values of To,Ptot inlet To,Ptot outlet values # what is the Ps in and out |
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#6 |
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deepthi
Join Date: Feb 2013
Posts: 8
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Its subsonic and pin=200000 and pout=212000 and the case is running well and giving results but in reality there should be pressure loss and here pressure is increasing..lets consider cold flow T=300k.In both cold flow and hot flow total pressure is increasing..
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#7 |
New Member
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Hi Vasava!
Thanks for you reply! But I am some questions about this problem Is it better to use: mesh motion or frame motion in my case? And how I am can set velocity (translation and rotation) mooved mesh or referense frame? Constants? |
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