UDF help

BigMc · November 16, 2016, 05:20

Hi, Im hoping someone of you could please help me with a UDF that has been wrecking my head for a while now, I want to model a 3 bladed vertical axis turbine in 2D, I was hoping the UDF would do that. I have come up with a functions that relates the pitching angle to the azimuth position, implemented using an If and else statement and set the azimuth to the initial position(theta0) + the time step(thetap1)

however after the 1st rotation I run into trouble here as I dont have a reset condition, could anyone help out here?

Im also having problems with getting it to work successfully, I thought having a pointer for *Angle would set my angle similar to others like omega, however it does not, Can anyone help? I'd be eternally grateful

any help or advice would be greatly appreciated,
Thanks

BigMc · November 22, 2016, 12:10

Could someone PLEASE provide some assistance in relation to this.

Thanks

November 16, 2016, 05:20	UDF help	#1
BigMc New Member Mike McManuc Join Date: Nov 2016 Posts: 9 Rep Power: 9	Hi, Im hoping someone of you could please help me with a UDF that has been wrecking my head for a while now, I want to model a 3 bladed vertical axis turbine in 2D, I was hoping the UDF would do that. I have come up with a functions that relates the pitching angle to the azimuth position, implemented using an If and else statement and set the azimuth to the initial position(theta0) + the time step(thetap1) however after the 1st rotation I run into trouble here as I dont have a reset condition, could anyone help out here? Im also having problems with getting it to work successfully, I thought having a pointer for Angle would set my angle similar to others like omega, however it does not, Can anyone help? I'd be eternally grateful any help or advice would be greatly appreciated, Thanks Last edited by BigMc; November 23, 2016 at 09:00. Reason: error*

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November 22, 2016, 12:10		#2
BigMc New Member Mike McManuc Join Date: Nov 2016 Posts: 9 Rep Power: 9	Could someone PLEASE provide some assistance in relation to this. Thanks