CMS-Flow:Wind Pressure

Wind

In CMS-Flow the wind shear stress is calculated as

     $\tau _{Wi}=\rho _{a}C_{d}|W|W_{i}$ 

The wind drag coefficient $C_{d}$ is calculated using the Hsu (1988)

     $C_{d}={\biggl [}{\frac {\kappa }{14.56-2\log W}}{\biggr ]}^{2}$ 

Symbol	Description	Units
$\tau _{W}$	Wind shear stress	Pa
$\rho _{a}$	Atmospheric density (~1.2 kg/m^3)	kg/m^3
$C_{d}$	Wind drag coefficient	none
$W$	10-min averaged wind speed at 10 m above the sea surface	m/sec
$\theta$	Wind direction	m/sec

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References

Hsu, S.A. (1988) Coastal meteorology. Academic Press, San Diego, CA.

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