Modelling a flag in floworks?

richardb · May 5, 2009, 00:04

Hi , im a new user of floworks but i have had some experience with CFX with internal flow modelling.

My latest project requires me to model the flow across a flag in 15knot winds (7.17m/s). My question is if floworks has the capacity to do some sort of multi-physics simulation that would relate the external flow to the fluttering of the flag.

I havent studied the flag flutter in great detail yet either , so if anyone has any recommended reading to do with the instability please feel free to comment.

Thanks

Kwagga · May 5, 2009, 03:26

If it's for a university project, I'd seriously model a flag on the moon

richardb · May 5, 2009, 03:43

Haha good call. Yeah we did a lab experiment with the wind tunnel and im trying to replicate the situation in CFD for top marks.

The postgrads have alot of packages available them so if anyone knows a package that would do this , I can go annoy one of my tutors to run something on one of his computers

.

The problem I see is that it would require simultaineous computation of the stress and deformation of the flag , and the fluid . Since the changing shape of the flag causes pressure imbalances in itself and leads to the instability.

May 5, 2009, 00:04	Modelling a flag in floworks?	#1
richardb New Member Richard Belcher Join Date: May 2009 Posts: 2 Rep Power: 0	Hi , im a new user of floworks but i have had some experience with CFX with internal flow modelling. My latest project requires me to model the flow across a flag in 15knot winds (7.17m/s). My question is if floworks has the capacity to do some sort of multi-physics simulation that would relate the external flow to the fluttering of the flag. I havent studied the flag flutter in great detail yet either , so if anyone has any recommended reading to do with the instability please feel free to comment. Thanks

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May 5, 2009, 03:26		#2
Kwagga New Member Leon Join Date: Apr 2009 Posts: 3 Rep Power: 17	If it's for a university project, I'd seriously model a flag on the moon

May 5, 2009, 03:43		#3
richardb New Member Richard Belcher Join Date: May 2009 Posts: 2 Rep Power: 0	Haha good call. Yeah we did a lab experiment with the wind tunnel and im trying to replicate the situation in CFD for top marks. The postgrads have alot of packages available them so if anyone knows a package that would do this , I can go annoy one of my tutors to run something on one of his computers . The problem I see is that it would require simultaineous computation of the stress and deformation of the flag , and the fluid . Since the changing shape of the flag causes pressure imbalances in itself and leads to the instability.