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Forum: Main CFD Forum

August 5, 2012, 10:49

Replies: 13

calculating pressure coefficient on airfoil surface

Views: 9,437

Posted By truffaldino

It is not a good idea to average pressure at...

It is not a good idea to average pressure at inlet, the error is rather determined by the maximal difference. Try to increase domain (it does not cost much computational time if you are using...

Forum: Main CFD Forum

August 5, 2012, 09:22

Replies: 13

calculating pressure coefficient on airfoil surface

Views: 9,437

Posted By truffaldino

No, this will give you an idea of value of...

No, this will give you an idea of value of relative error if you take p_out as p_infinity

Forum: Main CFD Forum

August 5, 2012, 07:38

Replies: 13

calculating pressure coefficient on airfoil surface

Views: 9,437

Posted By truffaldino

Take as an example viscous flow past flat plate:...

Take as an example viscous flow past flat plate: the flow is viscous but the pressure is constant far away from the plate (or simply constant everywhere for boundary layer approximation/equations).
...

Forum: Main CFD Forum

August 5, 2012, 03:55

Replies: 13

calculating pressure coefficient on airfoil surface

Views: 9,437

Posted By truffaldino

Why do you care so much about absolute value of...

Why do you care so much about absolute value of the pressure coefficient? Adding a constant (shift) to the pressure coefficient does not change total forces/ moments.

When your computation domain...

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