Calculation of gear pump

Tapoky · December 22, 2014, 07:23

Hi, all. I have some problems with calculation of gear pump in CFX. I use immersed solids for modeling gears of pump. Motion of them is OK. But if I look for results in cfd-post, streamlines look like as gears are absent. Is it OK?

My boundary condition:

inlet - static pressure;
outlet - aver. st. pressure;
initial conditions - all cart. components - 0.

Of course, p(outlet)>p(inlet), but in results the motion of fluid is directed from an outlet to an inlet. What's the problem?

ghorrocks · December 22, 2014, 16:10

Have you done the tutorial example of a gear pump using immersed solids? That shows you how to set it up.

December 22, 2014, 07:23	Calculation of gear pump	#1
Tapoky New Member Artem Join Date: Aug 2013 Posts: 15 Rep Power: 12	Hi, all. I have some problems with calculation of gear pump in CFX. I use immersed solids for modeling gears of pump. Motion of them is OK. But if I look for results in cfd-post, streamlines look like as gears are absent. Is it OK? My boundary condition: inlet - static pressure; outlet - aver. st. pressure; initial conditions - all cart. components - 0. Of course, p(outlet)>p(inlet), but in results the motion of fluid is directed from an outlet to an inlet. What's the problem?

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December 22, 2014, 16:10		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,717 Rep Power: 143	Have you done the tutorial example of a gear pump using immersed solids? That shows you how to set it up.