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Which is not a type of boundary conditions in CFD?

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Which is not a type of boundary conditions in CFD?

(a) Cyclic boundary conditions

(b) Symmetry boundary conditions

(c) Wall boundary conditions

(d) Nodal boundary conditions

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

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Best answer
Correct answer is (d) Nodal boundary conditions

The best explanation: Boundary conditions are not defined at nodes and nodal boundary conditions do not exist. There are many types of boundary conditions in CFD. Some of them are

Wall boundary conditions

Symmetry boundary conditions

Inlet boundary conditions

Outlet boundary conditions

Constant pressure boundary conditions

Periodic or cyclic boundary conditions

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