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In Details of Wall shear, right below the Expressions window, enter the following definition and click on Apply. The value for the wall shear stress will be displayed.

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We will now define the dynamic pressure. Create another expression and name it Dynamic pressure. In Details of Dynamic pressure, enter the following definition below and click on Apply.

It is important to enter the appropriate units so the dynamic pressure has the correct unit. Recall both the density and the upstream velocity are set to 1.

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