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-   -   fan boundary condition (http://www.cfd-online.com/Forums/fluent/80803-fan-boundary-condition.html)

 blusius October 7, 2010 04:25

fan boundary condition

hi ,everyone
does anyone uses the "fan boundary condition" in Fluent software? I need some help in setting the parameter.
any help will be appreciated
wish all of you
This is the first time that I ask a quesion here,my English is not so well,wish you will unstand me well.:p

 blusius October 7, 2010 04:30

any help will be appreciated.Thanks

 bravikanth December 28, 2010 07:48

if you can send me your email id i can send you a notes on how to set up the boundary conditions for the jet fan in fluent

cheers

Ravi

 blusius December 28, 2010 08:32

Quote:
 Originally Posted by bravikanth (Post 288676) if you can send me your email id i can send you a notes on how to set up the boundary conditions for the jet fan in fluent cheers Ravi
Hi ,Ravi
Thank you again

 imah September 29, 2011 09:50

Quote:
 Originally Posted by blusius (Post 288682) Hi ,Ravi Thank you very much for your reply. My email address is blusius@126.com. I am looking forward for your email. Thank you again
hai.. im also has same prolem to set up 3D fan.. can u help me?

 m2montazari September 29, 2011 16:34

hi,
you can simply define a volume domain and in fluent change it from interior to fan. then set the pressure gradient between two sides of fan and swirl velocity(in 3-d) of rotating fan. then solve and see the results!
yours,

 blusius September 29, 2011 22:56

Quote:
 Originally Posted by m2montazari (Post 326136) hi, you can simply define a volume domain and in fluent change it from interior to fan. then set the pressure gradient between two sides of fan and swirl velocity(in 3-d) of rotating fan. then solve and see the results! yours, mohammad
I have no idea about how to set the swirl velocity which contains two component: radial velocity and tangential velocity...can u help me?

 blusius September 29, 2011 23:00

Quote:
 Originally Posted by imah (Post 326080) hai.. im also has same prolem to set up 3D fan.. can u help me?
I only know something about the fan which is supposed to be static in the flow field. if your model is supposed to be swirl in the flow, i do not have much idea about how to set the parameters which are needed by Fluent Solver

 m2montazari September 30, 2011 03:32

hi,
I'm not sure but I think you can only set tangential velocity in fan models, not the radial. and the tangential is usually set as the rpm of the fan (propeller,turbine,compressor,...). if I'm not wrong, fluent uses pressure gradient as a pressure jump between two sides of fan zone and adds swirl velocity as V_theta=r*w to the flow. the result should not be so wrong but you know it's just an approximate!
yours,

 imah September 30, 2011 22:39

thanks to all.. actually my problem since at Gambit.. Fan is a part of my model.. I try a few method like subtract and split fan from flow field then set up bondary condition.. I dont know ist my problem at modelling or set up boundary condition in gambit.. Please help me..

 Gomaa, Sherif May 20, 2012 07:07

Jet Fans BCs Notes

Quote:
 Originally Posted by bravikanth (Post 288676) if you can send me your email id i can send you a notes on how to set up the boundary conditions for the jet fan in fluent cheers Ravi
I need the mentioned notes too so, please send me them on eng.sherifgomaa@gmail.com

Sherif

 michelle June 8, 2013 04:44

Quote:
 Originally Posted by bravikanth (Post 288676) if you can send me your email id i can send you a notes on how to set up the boundary conditions for the jet fan in fluent cheers Ravi

halo.. may i have the notes that u mention above..? i do appreciate it.. my emel is harmaizura90@gmail.com

 XJTH July 18, 2013 08:46

in the ansys fluent help pdf file , there is a very detailed description of the fan model in the flug.pdf .

good luck !

 guillaume1990 March 25, 2014 12:39

Quote:
 Originally Posted by bravikanth http://www.cfd-online.com/Forums/ima...s/viewpost.gif if you can send me your email id i can send you a notes on how to set up the boundary conditions for the jet fan in fluent cheers Ravi
Hello ! I know it's a really old post. But by any luck, can I have also the note on the fan model please?
Thank you very much

 bravikanth March 26, 2014 01:11

please send me your email id. I will see if i can find it for your and send it across.

Regards,

Ravi

 guillaume1990 March 26, 2014 04:09

 Karl SG April 15, 2014 21:06

Greetings;

I´m working on a project in which I have to analyse the flow over a spinning propeller and a cylindric body behind it, I would be really thankful if you could share those FAN notes with me as I was told this Boundary condition could be helpful to my model, thus I´m trying to learn as much as I can about it to model my case.

My email is s.gkrlos@hotmail.com

 mimititi April 24, 2014 05:26

hello i need to simulate jet fans can ravi please send me the note too my email is jgd05@mail.aub.edu

 spaceman04091987 May 12, 2014 05:48

Fan model

Hey Ravi,I am modeling a water tunnel with a fan in it. I have already tried to use the tangential velocity and pressure jump as inputs without being successful. I will be very thankful to you if you send me your fan model to fjodor.arndt@web.de. Thank you in advance.
Cheers

 mrtkrs August 29, 2014 12:01

this is old topic.ı feel lucky.ı want to learn how to analisy and simulationabout centrifugal air fan.is there anoyone to help me by sending notes,video models.thank you so much for interest my gmail adress is murat.akarsu44@gmail.com

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