pump's flow simulation

mickeysew814 · April 18, 2009, 00:22

dear all,

I was attempting to create a flow simulation for a pump but not really sure is the setting right or not. my goal was to obtain the pressure different. Do comments.

Below is the setting:
> inlet define as 0 m^3/s
> outlet define as static pressure
> using local rotating region where the local region is disable & define with certain RPM.

final result i get -ve pressure at 1 side, is this correct? For the pressure different, i have to add both or minus?

Thx!~

GadskiyPapa · April 20, 2009, 02:41

Hi, in the case of your statement negative pressure shows, that the cavitation flow is presented. You should turn cavitation option on to obtain the solution.

General Settings>Fluid> and find the cavitation checkbox here

mickeysew814 · April 20, 2009, 10:23

i see. Is it also related to my meshing setup as well? is there anything that i need to take note on the mesh side?

thx!~

April 18, 2009, 00:22	pump's flow simulation	#1
mickeysew814 New Member Join Date: Apr 2009 Posts: 2 Rep Power: 0	dear all, I was attempting to create a flow simulation for a pump but not really sure is the setting right or not. my goal was to obtain the pressure different. Do comments. Below is the setting: > inlet define as 0 m^3/s > outlet define as static pressure > using local rotating region where the local region is disable & define with certain RPM. final result i get -ve pressure at 1 side, is this correct? For the pressure different, i have to add both or minus? Thx!~

April 20, 2009, 02:41		#2
GadskiyPapa New Member Ivan Dergunov Join Date: Mar 2009 Posts: 2 Rep Power: 0	Hi, in the case of your statement negative pressure shows, that the cavitation flow is presented. You should turn cavitation option on to obtain the solution. General Settings>Fluid> and find the cavitation checkbox here __________________ 8 Year in CFD

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April 20, 2009, 10:23		#3
mickeysew814 New Member Join Date: Apr 2009 Posts: 2 Rep Power: 0	i see. Is it also related to my meshing setup as well? is there anything that i need to take note on the mesh side? thx!~