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Showing results 1 to 8 of 8 Search took 0.00 seconds. Search: Posts Made By: vinerm

Forum: FLUENT February 13, 2020, 15:06

Replies: 16 SRF (single reference frame), MRF(multiple reference frame) and sliding mesh Views: 4,803 Posted By vinerm Reference Frame The issue is not with the reference frame. The challenge comes from the reason for the flow. Since whole of the domain is looked at from the observer who is rotating with the domain, if there is no...

Forum: FLUENT February 13, 2020, 14:46

Replies: 16 SRF (single reference frame), MRF(multiple reference frame) and sliding mesh Views: 4,803 Posted By vinerm Validity of method SRF is valid if you considered only the small domain around the rotor. If you considered whole of the domain as SRF, then that would lead to very wrong results.

Forum: FLUENT February 13, 2020, 13:11

Replies: 16 SRF (single reference frame), MRF(multiple reference frame) and sliding mesh Views: 4,803 Posted By vinerm Yes Yes, size does matter. The size should be as close to the rotating body as possible. If diameter of actual rotating impeller is 100 mm then diameter of MRF should be as close to 100 mm as possible....

Forum: FLUENT February 13, 2020, 12:06

Replies: 16 SRF (single reference frame), MRF(multiple reference frame) and sliding mesh Views: 4,803 Posted By vinerm Mesh and order As far as order is concerned, if converged, higher order is better than lower. So, you can trust higher one. For the mesh, putting boundary layer at the interface could cause disturbance if the finer...

Forum: FLUENT February 13, 2020, 11:33

Replies: 16 SRF (single reference frame), MRF(multiple reference frame) and sliding mesh Views: 4,803 Posted By vinerm Precision Were these cases run in single precision or double precision? Since the values themselves are rather small, these have to be run in double precision. Though the actual basis for dp is if gradients...

Forum: FLUENT February 13, 2020, 11:17

Replies: 16 SRF (single reference frame), MRF(multiple reference frame) and sliding mesh Views: 4,803 Posted By vinerm Variation Even without any blades or baffles, there are turbulent eddies that would cause interference at the interface. However, as I mentioned earlier, the average should be close to MRF. If that is not the...

Forum: FLUENT February 13, 2020, 10:54

Replies: 16 SRF (single reference frame), MRF(multiple reference frame) and sliding mesh Views: 4,803 Posted By vinerm OK That makes sense :)

Forum: FLUENT February 13, 2020, 10:48

Replies: 16 SRF (single reference frame), MRF(multiple reference frame) and sliding mesh Views: 4,803 Posted By vinerm SRF is invalid You can use MRF or moving mesh, however, SRF is not valid in this case since you have one rotating domain and one stationary domain. Moving mesh will give fluctuating torque, however, average should...

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