Fluent: change of RMP (of a fan) by time possible?

January 26, 2009, 07:58

Hello,

is there any option to chagne the RPM (of fan/turbine) by time? for example: When I chose the "rotating reference frame" in the boundaries for a volume, I can define the RPM, but just constant. Is there a possibility to make the RPM change by time, f.e. 20 seconds +500rpm then the fan should be simulated in the opposite direction of -500 rpm. So 20 sec. + 500, next 20 sec. -500 and so on. Do I have to stop every simulated 20 sec. and change it manualy or can I automate this process?

Thanks!

January 26, 2009, 10:41

Not possible

January 27, 2009, 05:50

why not possible? In my view, it is possible. you can write some simple journal...

January 26, 2009, 07:58	Fluent: change of RMP (of a fan) by time possible?	#1
f10w Guest Posts: n/a	Hello, is there any option to chagne the RPM (of fan/turbine) by time? for example: When I chose the "rotating reference frame" in the boundaries for a volume, I can define the RPM, but just constant. Is there a possibility to make the RPM change by time, f.e. 20 seconds +500rpm then the fan should be simulated in the opposite direction of -500 rpm. So 20 sec. + 500, next 20 sec. -500 and so on. Do I have to stop every simulated 20 sec. and change it manualy or can I automate this process? Thanks!

January 26, 2009, 10:41	Re: Fluent: change of RMP (of a fan) by time possi	#2
sa Guest Posts: n/a	Not possible

January 27, 2009, 05:50	Re: Fluent: change of RMP (of a fan) by time possi	#3
bohis Guest Posts: n/a	why not possible? In my view, it is possible. you can write some simple journal...

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Is it to possible to change time step DeltaT during a calculation	dbxmcf	OpenFOAM Running, Solving & CFD	5	January 26, 2018 17:03
time dependent area change	Lijo	FLUENT	2	June 19, 2012 01:48
help: acceleration change wrt time	rajat kumar bhuyan	FLUENT	0	May 23, 2007 03:59
Change boundary with time (CCM)	James	Siemens	1	November 30, 2006 12:47
the change of the moisture content with time?	S.B.Shin	FLUENT	0	August 28, 2002 23:47