external gear pump with fluent

March 29, 2008, 05:15

Hi! I'm trying to simulate two meshing gears in a hydraulic pump with Fluent. I have written the UDF for the movement of the gears and the remeshing for each time step. This seems to work fine. The problem is that when I make the first analysis the results show no movement of the oil that should be drag by the gears! I have tried imposing different boundary conditions declaring the rotating speed of the walls representing the gears but nothing happens. The only way to obtain something is to define the rotating speed of the oil and to set as stationary the gears but this is "correct" just for one of the gears and not for the other. Any suggestion? Thank you in advance.

interawe · March 16, 2009, 13:37

Hi
I working as same as you about gear pump, I wish we can cooperate and exchange information, my problem that velocity vector direct from outlet to inlet. I want to know more about you and your work. Give me your email to send one another files PDF etc…….
Regards.
Mustafa Ayad

Doctor · March 16, 2009, 18:19

Hi, Mustafa! I'm trying to simulate a gear pump with Fluent. I've made some progress in this kind of simulations but I have problems too. Maybe we could help each other with some questions? if you are interested in such cooperation write me on my email adress :

kaktus335@mail.ru

PS I'll be thankful for any information about simulating of gear pumps (gerotors) in fluent!

nabil · March 18, 2009, 08:48

Hi friends, i am verry interrested what you are doing, if possible explain me steps how to do, or send me *.dbs file if possible. " i am begineer in fluent"

March 29, 2008, 05:15	external gear pump with fluent	#1
Pietro Ghillani Guest Posts: n/a	Hi! I'm trying to simulate two meshing gears in a hydraulic pump with Fluent. I have written the UDF for the movement of the gears and the remeshing for each time step. This seems to work fine. The problem is that when I make the first analysis the results show no movement of the oil that should be drag by the gears! I have tried imposing different boundary conditions declaring the rotating speed of the walls representing the gears but nothing happens. The only way to obtain something is to define the rotating speed of the oil and to set as stationary the gears but this is "correct" just for one of the gears and not for the other. Any suggestion? Thank you in advance.

March 16, 2009, 18:19	gear pump	#3
Doctor New Member Artem Join Date: Mar 2009 Posts: 1 Rep Power: 0	Hi, Mustafa! I'm trying to simulate a gear pump with Fluent. I've made some progress in this kind of simulations but I have problems too. Maybe we could help each other with some questions? if you are interested in such cooperation write me on my email adress : kaktus335@mail.ru PS I'll be thankful for any information about simulating of gear pumps (gerotors) in fluent!

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March 16, 2009, 13:37		#2
interawe New Member Mustafa Ayad Join Date: Mar 2009 Posts: 8 Rep Power: 17	Hi I working as same as you about gear pump, I wish we can cooperate and exchange information, my problem that velocity vector direct from outlet to inlet. I want to know more about you and your work. Give me your email to send one another files PDF etc……. Regards. Mustafa Ayad

March 18, 2009, 08:48		#4
nabil New Member abdi Join Date: Mar 2009 Posts: 1 Rep Power: 0	Hi friends, i am verry interrested what you are doing, if possible explain me steps how to do, or send me *.dbs file if possible. " i am begineer in fluent"