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xyq102296 October 29, 2010 03:04

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4 Attachment(s)
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nuengao October 31, 2010 07:57

need your suggestion
 
Dear xyq102296

Do you know how to mesh the fluid flow over the fins?

xyq102296 October 31, 2010 14:49

Fins? THere are some tutorials about that.
But is this related to my problem?

michael_owen November 1, 2010 10:02

It looks like the inlet conditions are different maybe. Like yours has a higher temperature at the core.

I can see from the thickness of the baffles/fins that the meshes are different. Have you checked for mesh independence in your solution?

xyq102296 November 1, 2010 11:53

Quote:

Originally Posted by michael_owen (Post 281651)
It looks like the inlet conditions are different maybe. Like yours has a higher temperature at the core.

I can see from the thickness of the baffles/fins that the meshes are different. Have you checked for mesh independence in your solution?

Hello Michael,

THe inlet condition is same, I got the data of inlet speed and inlet temperature from the material.
How to check the mesh independence? I am new about this part.
Do you know how to define the inflation layer thickness, because I think I add the heat flux on the wall, so the first layer thickness is quite important, I don't how to define that number in my laminar flow model.

michael_owen November 1, 2010 11:54

You should be asking your instructor these sorts of basic questions.

xyq102296 November 1, 2010 11:55

1 Attachment(s)
and for these picture, the model is 2D model, 5mm width and 2meters long, this picture is just the upper part of the model, the whole model looks like this

d3xt3r November 30, 2010 17:53

Can someone explain what sort of problem is this?


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