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Thanitha April 1, 2015 01:45

Calculating the stagnation point of a flow field
 
Hi

I have a CFD solution form Ansys cfx. Which contains the location data ,velocity vectors along with temperature, pressure, total pressure and data for turbulence modeling. I want to calculate the location of the stagnation point in this flow field.
Is there a specific method to do this apart from getting the point with the highest pressure value? your help is greatly appreciated.

Thank you

FMDenaro April 1, 2015 04:29

Quote:

Originally Posted by Thanitha (Post 539382)
Hi

I have a CFD solution form Ansys cfx. Which contains the location data ,velocity vectors along with temperature, pressure, total pressure and data for turbulence modeling. I want to calculate the location of the stagnation point in this flow field.
Is there a specific method to do this apart from getting the point with the highest pressure value? your help is greatly appreciated.

Thank you


Well, the correct definition of "stagnation point" implies you are solving a potential flow... for viscous flows you have zero velocity everywhere on a fixed wall.

Thanitha April 1, 2015 08:30

I don not have the scalar and vector field in function form. Just as point data. Is there a standard procedure to calculate the stagnation point.

nvarma April 2, 2015 17:08

Quote:

Originally Posted by Thanitha (Post 539464)
I don not have the scalar and vector field in function form. Just as point data. Is there a standard procedure to calculate the stagnation point.


Create an iso surface with velocity=0.

Or in contour set velocity magnitude max or min to zero. That should work.


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