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Non-Newtonian Secondary flow in a bend

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Old   June 22, 2014, 08:38
Default Non-Newtonian Secondary flow in a bend
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I did a simulation of non-newtonian flow across a bend with the objective of finding the amount of secondary flow in this bend. What I did was Model the flow geometry, added a no slip condition to the wall with a specified roughness and used the Reynolds stress model with full buoyancy effect.

However, I'm not getting any secondary flow in the pipe. I've also tried newtonian flow with other different models.
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buoyancy, no slip condition, reynolds stress model, secondary flow

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