Which Viscous model to use to simulate airflow over obstruction? -- CFD Online Discussion Forums

October 22, 2018, 14:21

Which Viscous model to use to simulate airflow over obstruction?

amitshah3333

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Amit

Join Date: Jun 2018

Posts: 14

Rep Power: 7

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

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

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