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Setting the RR correctly

75 Views, 3 Replies
03/05/2018 8:56 PM


Two quick questions : 

i have a fan who's within a RR. But the shaft is also rotating at the same speed as the blades. Should a design a RR around the shaft to modelize the effect of the rotational speed?  

Furthermore, can i supress mesh inside the RR to avoid infiltration in the steel (see picture RR.jpg) ? 

Finally are thoses two aspect are negligible compared to the high velocity who's effected from the RR ? 



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Re: Setting the RR correctly

03/06/2018 1:08 PM

Hi Fred,


You can suppress solids within the RR and they will still rotate.


Instead of having 2 RRs maybe try changing the geometry of the RR to incorporate both the shaft and the blades e.g. extruding a cylinder (diameter a little bigger than the shaft) out from the original cylinder to envelope the shaft. I am not 100% sure it will work but it is worth a try.


Let me know how you get on.





David Short
Technical Support Specialist, Simulation

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Re: Setting the RR correctly

03/06/2018 1:57 PM

All right 
Thx David i'll keep you posted 

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