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Dynamic meshing

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Old   January 19, 2018, 11:53
Default Dynamic meshing
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luke sheehan
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Hi guys,

I want to create a dynamic mesh in star-ccm+. Effectively I've got a helicopter rotor and I want to rotate this rotor during the simulation.

I've had a look on the tutorial and help guides as well as videos on youtube and I can't find anything that explains how to do it. If anyone knows how can you please give me instructions?

Thanks
Luke
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Old   January 19, 2018, 15:40
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Matt
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You must have not looked very hard. There are several options depending on what you want to get out of your solution. MRF is nice, but doesn't really capture some dynamic effects. RBM is the brute-force method where you have a sliding mesh and your rotor moves. My personal favorite is the BEM method which is great if you want the effect of the rotor without actually modeling and meshing it.

User Guide > Tutorials > Motion > Rigid Body Motion: Moving Reference Frame

User Guide > Tutorials > Motion > Rigid Body Motion: Rotating Fan

User Guide > Tutorials > Motion > Blade Element Method: Helicopter Rotor-Fuselage Interaction
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Old   January 22, 2018, 03:17
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Ashok Chaudhari
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Quote:
Originally Posted by lukesheehan27 View Post
Hi guys,

I want to create a dynamic mesh in star-ccm+. Effectively I've got a helicopter rotor and I want to rotate this rotor during the simulation.

I've had a look on the tutorial and help guides as well as videos on youtube and I can't find anything that explains how to do it. If anyone knows how can you please give me instructions?

Thanks
Luke
If you compare to Fluent then both have MRF as well as Sliding mesh. But for dynamic mesh CCM have Overset capability. In Overset you have component mesh and background mesh. So you can have rotation or translation or both which is not possible in Sliding as it can have rotation only. Give more inputs to your problem so that better comment can be done
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Old   January 22, 2018, 14:04
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luke sheehan
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Hi, thanks for the help guys. I'd tried the moving reference frame and rigid body motion methods before but couldn't make sense of them. I went back and I think I'd been screwing up at incorrectly creating the interfaces but its working now thankfully. Cheers.
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