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Drag force and drag coefficient

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Old   December 2, 2020, 19:27
Default Drag force and drag coefficient
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Hello everyone,

I am new to ANSYS and I am doing a drag and lift study on a train body using Fluent Solver.

I am getting a pressure drag of 154.85 N and a viscous drag of 33.29 N. That totals 188.14 N. The pressure drag coefficient is of 6.68 and the viscous one as 1.43 which amounts to 8.11 in total.

For lift, the pressure component is 16.6N and the viscous one is -0.02N which totals to 16.57N. The lift coefficient is 0.715 with pressure one being 0.716 and viscous one -0.001.

I wanted to know that in order to calculate the amount of drag force and drag coefficient and also the same for the lift, do I need to consider the pressure component, viscous component or both?

Thank you very much in advance.
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Old   December 10, 2020, 23:55
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That depends on if you want pressure drag, viscous drag or total drag. Most people are interested in total drag
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