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September 11, 2016, 13:35 |
one fin instead of an array of fins
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#1 |
New Member
Join Date: Oct 2014
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hi,
im trying to simulate a row of tubes, i want to use one fin instead of all of them,by simulating one fin and defining aximmetric boundary for right and left, but i don't know how to do this, i searched a lot but it didn't help, anyone can help me? here is a top view schematic: |
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September 11, 2016, 19:01 |
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#2 |
Super Moderator
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
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You should define translational periodic boundaries on the left and right faces, and impose a flow rate or pressure drop across them to drive the flow.
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September 11, 2016, 23:31 |
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#3 |
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thank you, flow in this case is from up to down, not left to right, how do i find flow rate or pressure drop for those?
i taught we define a bc that counts the effect of adjacent fins and we don't need to define any parameter. |
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September 12, 2016, 01:34 |
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#4 |
Super Moderator
Glenn Horrocks
Join Date: Mar 2009
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The usual approach is to use periodic boundary pairs. They are the same as I mentioned in my previous post, except you don't impose a pressure difference or flow rate across it.
You can use symmetry boundaries, but only if the flow is truly symmetric. |
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September 12, 2016, 04:57 |
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#5 |
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thanks, it's very useful.
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