pitching simulation

varghese9 · June 16, 2015, 15:36

i am currently using su2 to perform pitching simulation provided in su2 testcase. the problem i am facing is that i have to plot the pitch v/s alpha plot to obtain hystersis plot which i am not getting and what i obtain is a sine curve .i just want help regarding whether the time given in output is in mins and x axis should be alpha=1.01*sin(wt) where w = pitching frequency in rad/s.kindly guide me what i had done wrong. looking forward for some help

Santiago Padron · July 14, 2015, 16:41

The x axis you have is correct, but you have to make sure you have the right time. You know the time step (UNST_TIMESTEP) of the simulation and the number of simulation it ran, from there you can obtain the time. The time output in the history file is in minutes, but that is how long it took your computer to run the simulation.

June 16, 2015, 15:36	pitching simulation	#1
varghese9 Member varghese mathew Join Date: Aug 2014 Location: India Posts: 32 Rep Power: 11	i am currently using su2 to perform pitching simulation provided in su2 testcase. the problem i am facing is that i have to plot the pitch v/s alpha plot to obtain hystersis plot which i am not getting and what i obtain is a sine curve .i just want help regarding whether the time given in output is in mins and x axis should be alpha=1.01*sin(wt) where w = pitching frequency in rad/s.kindly guide me what i had done wrong. looking forward for some help

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July 14, 2015, 16:41		#2
Santiago Padron New Member Santiago Padron Join Date: May 2013 Posts: 17 Rep Power: 12	The x axis you have is correct, but you have to make sure you have the right time. You know the time step (UNST_TIMESTEP) of the simulation and the number of simulation it ran, from there you can obtain the time. The time output in the history file is in minutes, but that is how long it took your computer to run the simulation.