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Search: Posts Made By: oldisbest
Forum: FLUENT May 20, 2013, 00:50
Replies: 7
Views: 2,173
Posted By oldisbest
My second-round iteration will do some...

My second-round iteration will do some modifications on the model.
I will consider the tube-inside refrigerant flow which is two-phase.
So their will be two kinds of fluid, one is air, the other is...
Forum: FLUENT May 20, 2013, 00:34
Replies: 7
Views: 2,173
Posted By oldisbest
It's a regular case with less than 1 million...

It's a regular case with less than 1 million meshes, incompressible fluid, constant material properties, only conductive and convetive heat transfer involved. In my work, it's really a simple case.
...
Forum: FLUENT May 20, 2013, 00:25
Replies: 7
Views: 2,173
Posted By oldisbest
I saw some persons were using standard k-e model...

I saw some persons were using standard k-e model in similar phisical model. and they got the results with 10-15% error (compared with test).

Yes, to adopt laminate flow model with viscous heating,...
Forum: FLUENT May 13, 2013, 04:08
Replies: 7
Views: 2,173
Posted By oldisbest
Re

Reynolds number is about 250.
Temperature of air inlet is 35 deg C.
Temperature of heating wall is 50 deg C.

Air outlet temperature based on current CFD results is about 47 deg C.

SIMPLE...
Forum: FLUENT May 13, 2013, 03:22
Replies: 7
Views: 2,173
Posted By oldisbest
Red face When to stop the iteration?

Hello,
I have one similified model for micro-channel heat exchanger. Please find the attachment of detailed discription.

only about 0.8 million meshes but quality is bad (several sharp angles...
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