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Near the wall, the first wall damping function tends to ___________

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in Computational Fluid Dynamics by (118k points)
Near the wall, the first wall damping function tends to ___________

(a) -1

(b) 1

(c) 0

(d) ∞

The question was asked during an online exam.

The query is from Turbulence Modelling in chapter Turbulence Modelling of Computational Fluid Dynamics

1 Answer

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Best answer
The correct choice is (c) 0

To elaborate: The value of the kinematic eddy viscosity parameter decreases with the Reynolds number. Near the wall, the Reynolds number is very small. So, the kinematic eddy viscosity parameter and the first wall function also tends to zero.

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