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Calculating the stagnation point of a flow field

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Old   April 1, 2015, 02:45
Smile Calculating the stagnation point of a flow field
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Thanitha
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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

Last edited by Thanitha; April 1, 2015 at 04:54.
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Old   April 1, 2015, 05:29
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Quote:
Originally Posted by Thanitha View Post
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.
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Old   April 1, 2015, 09:30
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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.
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Old   April 2, 2015, 18:08
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Originally Posted by Thanitha View Post
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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