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boundary Mach number exceeds maximum limit !

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Old   August 24, 2014, 13:23
Default boundary Mach number exceeds maximum limit !
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aysiyi
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HI :
guys ,i am simulating a centrifugal compressoe which contains an impeller and a diffuser, the BC is : pressure inlet, mass flow outlet ,in the simulation ,it shows that
Warning: boundary Mach number exceeds maximum limit on mass-flow-inlet-7 on 640 faces
bounding Mach number to maximum limit =9.800000e-01

my quetion is : what does it mean and what i should do to solve lt ?
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Old   December 21, 2014, 17:15
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mohamed mohsen
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any help with this
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Old   December 12, 2015, 01:19
Default Find solution for this issue?
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Have you solved this issue?. If yes, please share your experience.

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Originally Posted by Aysiyi View Post
HI :
guys ,i am simulating a centrifugal compressoe which contains an impeller and a diffuser, the BC is : pressure inlet, mass flow outlet ,in the simulation ,it shows that
Warning: boundary Mach number exceeds maximum limit on mass-flow-inlet-7 on 640 faces
bounding Mach number to maximum limit =9.800000e-01

my quetion is : what does it mean and what i should do to solve lt ?
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Old   July 8, 2017, 14:15
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Mekuannint
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Probably the flow is choked!! Decreasing the mass flow rate would help!!
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Old   January 28, 2018, 02:56
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Thanks meku..



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Probably the flow is choked!! Decreasing the mass flow rate would help!!
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