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June 3, 2015, 10:23 |
Physics models for turbulent 2D DNS
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#1 |
New Member
Oliver Westbrook-Netheton
Join Date: Jan 2014
Posts: 16
Rep Power: 12 |
I am currently trying to capture the Von Karman street behind a static 2D cylinder at a Reynolds number of 200. At this Reynolds number, the wake its turbulent (http://www.thermopedia.com/content/1...FLOW_OVER_FIG2), I have already simulated the same problem at a Reynolds number of 80 and got good results back.
For this, I selected the same physics models within Star-CCM+ as are stipulated in the Incompressible tutorial for capturing the vortex shedding. Now that the flow is turbulent, I need to select the 'Turbulent' option instead of Laminar but want to implement a DNS. This requires no models for turbulence, but Star-CCM+ will not let me run the simulation without one. How do I chose the appropriate physics models to implement a '2D DNS'? Many thanks. |
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July 7, 2015, 14:14 |
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#2 |
Senior Member
Lucky
Join Date: Apr 2011
Location: Orlando, FL USA
Posts: 5,748
Rep Power: 66 |
To do DNS, just choose 2D laminar
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Tags |
dns, physics models, star-ccm+, von karman street |
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