Why Cp distributions and static Pressure distribution are same?

paraglider · November 7, 2013, 05:08

Hi everyone.
I'm making 2D cfd analysis of a paraglider.
I tried lots of solution methods but interestingly my Pressure Coefficient distribution and my static pressure distribution are %99 same. Is there anyone who has any idea about this?
Thank you for your answers.

tarjeiba · November 7, 2013, 08:53

Hi,

With the pressure coefficient defined as $C_p = \frac{p- p_\infty}{\frac{1}{2} \rho_\infty V_\infty ^2 }$ , wouldn't you expect to find that this follows the same development along the airfoil as the static pressure (

) does? (As far as I can see, all the other variables are constants for a given flow.)

paraglider · November 8, 2013, 09:55

I see. I think I had I problem with my Pinfinte value.Thank you

November 7, 2013, 05:08	Why Cp distributions and static Pressure distribution are same?	#1
paraglider New Member Join Date: Dec 2012 Posts: 6 Rep Power: 13	Hi everyone. I'm making 2D cfd analysis of a paraglider. I tried lots of solution methods but interestingly my Pressure Coefficient distribution and my static pressure distribution are %99 same. Is there anyone who has any idea about this? Thank you for your answers.

November 7, 2013, 08:53		#2
tarjeiba New Member Tarjei Join Date: Aug 2013 Posts: 19 Rep Power: 12	Hi, With the pressure coefficient defined as $C_p = \frac{p- p_\infty}{\frac{1}{2} \rho_\infty V_\infty ^2 }$ , wouldn't you expect to find that this follows the same development along the airfoil as the static pressure () does? (As far as I can see, all the other variables are constants for a given flow.)

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November 8, 2013, 09:55		#3
paraglider New Member Join Date: Dec 2012 Posts: 6 Rep Power: 13	I see. I think I had I problem with my Pinfinte value.Thank you