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characterize heat exchangers tube as porous media

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Old   July 10, 2018, 05:12
Default characterize heat exchangers tube as porous media
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Dear reader
I am simulating a burner in ANSYS Fluent. At the outlet of the burner there is heat exchanger where the flow (outlet diameter is 1.5 meter) enters 3000 tubes with very small (same)diameter. Does anybody know how to model these small pipes as a porous media?
Thank you very much
H.
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