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Which Viscous model to use to simulate airflow over obstruction?

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Old   October 22, 2018, 15:21
Default Which Viscous model to use to simulate airflow over obstruction?
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Amit
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Hi,
I am a beginner to Fluent. I am trying to model airflow over obstruction to get air streamline. I tried K-Epsilon (Real), K-Omega (SST) and LES model in 2D.
Distance between inlet and obstruction is 1.5m and between output and inlet is 2m. Air velocity at inlet is defined @ 10m/s. Setup model is shown in file. Output (image) of velocity streamline are attached. From Velocity profile, it is seen that flow is not reaching obstruction and starts spreading before that.
Please guide me where I am making mistake.


Thankyou,
Attached Images
File Type: jpg KW-SST-VELOCITY STREAMLINE.JPG (186.1 KB, 7 views)
File Type: jpg MODEL-1.jpg (49.4 KB, 8 views)
File Type: jpg KE-REALIZABLE-VELOCITY STREAMLINE.JPG (191.0 KB, 9 views)
File Type: jpg LES-VELOCITY STREAMLINE.JPG (176.9 KB, 7 views)
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