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Turbulent Forced Convection

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Old   September 26, 2006, 21:33
Default Turbulent Forced Convection
  #1
Tim
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I am trying to model forced convection with a gas flow through a carrier pipe and cooling water flowing through the annular space between the carrier pipe and a jacket pipe. There do not seem to be any tutorials that are this specific.

Since I am new to Fluent, does anyone have any directions or suggestions on how to accomplish this?
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Old   October 1, 2006, 07:41
Default Re: Turbulent Forced Convection
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Ralf Schmidt
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hi!

I guess, your flow is turbulent, so

1. generate a grid. Take care, that the yplus values at the walls, where the heat transfer will take place are in a good range (allowable range for yplus depents on the wall modell you are using - check near wall treatement section in Fluent manual) to estimate yplus check: http://www.cfd-online.com/Forum/main...cgi?read=44320

2. in Fluent, select the appropiate wall modell and start simulating!

The near wall treatment is VERY important for heat transfer problems. There is a strong dependency of wall modells, yplus and HTC.

basically, thats it!

Ralf
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