Functions/Subroutines
subroutine	hturbp (prl, prt, ckarm, yplus, htur)
	Compute the correction of the exchange coefficient between the fluid and the wall for a turbulent flow. More...

Function/Subroutine Documentation

◆ hturbp()

Compute the correction of the exchange coefficient between the fluid and the wall for a turbulent flow.

This is function of the dimensionless distance to the wall $y^+ = \dfrac{\centip \centf u_\star}{\nu}$ .

Then the return coefficient reads:

$h_{tur} = Pr \dfrac{y^+}{T^+}$

This coefficient is computed thanks to a similarity model between dynamic viscous sub-layer and themal sub-layer.

$ T^+ $ is computed as follows:

For a laminar Prandtl number smaller than 0.1 (such as liquid metals), the standard model with two sub-layers (Prandtl-Taylor) is used.
For a laminar Prandtl number larger than 0.1 (such as liquids and gaz), a model with three sub-layers (Arpaci-Larsen) is used.

The final exchange coefficient is:

$h = \dfrac{K}{\centip \centf} h_{tur}$

Parameters

[in]	yplus	dimensionless distance to the wall
[in]	ckarm	Von Karman constant
[in]	prt	turbulent Prandtl number
[in]	prl	laminar Prandtl number
[out]	htur	corrected exchange coefficient