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Which of these conditions is used to find the velocity component of the boundary while using constant pressure boundary condition?

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Which of these conditions is used to find the velocity component of the boundary while using constant pressure boundary condition?

(a) Conservation of angular momentum

(b) Conservation of linear momentum

(c) Energy conservation

(d) Continuity

I had been asked this question in an internship interview.

This interesting question is from Boundary Conditions topic in portion Boundary Conditions of Computational Fluid Dynamics

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The correct option is (d) Continuity

Easiest explanation: Velocity components are obtained as part of the solution procedure. The flow directions are obtained by ensuring that continuity is satisfied at every cell.

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