How to conduct a coupled-Field analysis of a centrifugal pump on Ansys Workbench ?

imana · February 10, 2018, 17:53

I want to realize a computational modal study of a centrifugal pump in order to investigate its resistance to an earthquake during its functioning (taking into account the influence of flow’s temperature on the modal response of the pump). I wonder what is the best field coupling way to do that on Ansys workbench , also if is it more accurate to use CFX instead of Fluent in this case study .
Thank you in advance for helping

Christophe · February 10, 2018, 18:23

I certainly don't know exactly what you're doing, but don't think a cfd is needed. The stiffness properties of the pump material don't change much with temperature unless it gets really hot.

ghorrocks · February 10, 2018, 18:54

It depends on what modal response you are looking for. Are you talking about modal response of the pump impeller or mechanical features (eg housing)? Or modal response of the fluid system it is part of? Or a coupled modal response of the mechanical and fluid components?

February 10, 2018, 17:53	How to conduct a coupled-Field analysis of a centrifugal pump on Ansys Workbench ?	#1
imana New Member imane EL JIRARI Join Date: Dec 2017 Posts: 7 Rep Power: 8	I want to realize a computational modal study of a centrifugal pump in order to investigate its resistance to an earthquake during its functioning (taking into account the influence of flow’s temperature on the modal response of the pump). I wonder what is the best field coupling way to do that on Ansys workbench , also if is it more accurate to use CFX instead of Fluent in this case study . Thank you in advance for helping

February 10, 2018, 18:54		#3
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,854 Rep Power: 144	It depends on what modal response you are looking for. Are you talking about modal response of the pump impeller or mechanical features (eg housing)? Or modal response of the fluid system it is part of? Or a coupled modal response of the mechanical and fluid components? __________________ Note: I do not answer CFD questions by PM. CFD questions should be posted on the forum.

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February 10, 2018, 18:23		#2
Christophe Member Join Date: Jan 2015 Posts: 62 Rep Power: 11	I certainly don't know exactly what you're doing, but don't think a cfd is needed. The stiffness properties of the pump material don't change much with temperature unless it gets really hot.