TUI coefficient of drag and lift

Tait10 · March 29, 2020, 23:58

Morning all,

I am currently using HPC to simulate flow around a wingsuit. I have not yet found a way to find the Cl and Cd of the wingsuit, I can so far only find the lift and drag in Newtons. I am limited to using the TUI so does anybody know what the commands are to either convert the lift and drag into coefficients like you can on a Gui or just have it as coefficients in the first place?

TIA,

Zach

vinerm · March 30, 2020, 05:33

The coefficients are nothing by normalized force values. You just need to divide force in N by dynamic pressure of freestream to get coefficient values. As far as commands are concerned, you will find those under solve rep-def. But those will setup monitors. To fetch values, best would be to calculate at your end.

Tait10 · March 30, 2020, 08:29

Hi there,

Thanks for your answer. I can get cd and cl when I set them up on the GUI, should there not be some TUI system for doing this as well? It seems counterintuitive.

vinerm · March 30, 2020, 09:40

Not every command in TUI has a parallel option in GUI, similarly, not every GUI option has a TUI command. You can setup a monitor for coefficient, you can print their values as the simulation proceeds, but there is no option to compute by giving a command. Possibly in future release.

March 29, 2020, 23:58	TUI coefficient of drag and lift	#1
Tait10 New Member ZT Join Date: Nov 2019 Posts: 14 Rep Power: 7	Morning all, I am currently using HPC to simulate flow around a wingsuit. I have not yet found a way to find the Cl and Cd of the wingsuit, I can so far only find the lift and drag in Newtons. I am limited to using the TUI so does anybody know what the commands are to either convert the lift and drag into coefficients like you can on a Gui or just have it as coefficients in the first place? TIA, Zach

March 30, 2020, 05:33	Coefficients	#2
vinerm Senior Member Vinerm Join Date: Jun 2009 Location: Nederland Posts: 2,946 Blog Entries: 1 Rep Power: 36	The coefficients are nothing by normalized force values. You just need to divide force in N by dynamic pressure of freestream to get coefficient values. As far as commands are concerned, you will find those under solve rep-def. But those will setup monitors. To fetch values, best would be to calculate at your end. __________________ Regards, Vinerm PM to be used if and only if you do not want something to be shared publicly. PM is considered to be of the least priority.

March 30, 2020, 09:40	GUI and TUI	#4
vinerm Senior Member Vinerm Join Date: Jun 2009 Location: Nederland Posts: 2,946 Blog Entries: 1 Rep Power: 36	Not every command in TUI has a parallel option in GUI, similarly, not every GUI option has a TUI command. You can setup a monitor for coefficient, you can print their values as the simulation proceeds, but there is no option to compute by giving a command. Possibly in future release. __________________ Regards, Vinerm PM to be used if and only if you do not want something to be shared publicly. PM is considered to be of the least priority.

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March 30, 2020, 08:29		#3
Tait10 New Member ZT Join Date: Nov 2019 Posts: 14 Rep Power: 7	Hi there, Thanks for your answer. I can get cd and cl when I set them up on the GUI, should there not be some TUI system for doing this as well? It seems counterintuitive.