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High inlet Turbulence vs Low inlet Turbulence |
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December 2, 2016, 00:03 |
High inlet Turbulence vs Low inlet Turbulence
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New Member
Sana Ullah
Join Date: Sep 2014
Location: Daejeon,South Korea
Posts: 28
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Hi everyone,
I am simulating steady state flow around a set of buildings using k epsilon model. The problem I am facing is that, if I set higher values of inlet turbulence (40%), I get a well converged solution, but incase I use lower values of turbulence (10%), I don't get a stable solution (residuals oscillate irregularly) What could be the reason? One probable reason that I found on ANSYS website says that "Higher turbulence at inlet may swamp the boundary layer". Is there any other explanation to this, or someone can further explain the ANSYS statement.
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Mehar, Phd Scholar KAIST, Korea |
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Tags |
cfd analysis, inlet bc, turbulence |
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