A Power Wind Law for Turbulent Transfer Computations

Wilfried Brutsaert; Gour‐Tsyh ‐T Yeh

doi:10.1029/WR006i005p01387

A Power Wind Law for Turbulent Transfer Computations

Wilfried Brutsaert, Gour‐Tsyh ‐T Yeh

Graduate Institute of Applied Geology

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19 Scopus citations

Abstract

The parameters C and m of a power law for the wind profile u = Cu*(z/z₀)^m, where u* is the friction velocity and z₀ is the roughness length of the surface, are determined as functions of the roughness and of the Monin‐Obukhov stability length L through comparison with the log linear law for stable conditions and the interpolation law for unstable conditions. As expected, for neutral conditions the results show that m and C are approximately equal to 1/7 and 6, respectively. Parameter C increases slightly whereas m decreases with decreasing stability.

Original language	English
Pages (from-to)	1387-1391
Number of pages	5
Journal	Water Resources Research
Volume	6
Issue number	5
DOIs	https://doi.org/10.1029/WR006i005p01387
State	Published - Oct 1970

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title = "A Power Wind Law for Turbulent Transfer Computations",

abstract = "The parameters C and m of a power law for the wind profile u = Cu*(z/z0)m, where u* is the friction velocity and z0 is the roughness length of the surface, are determined as functions of the roughness and of the Monin‐Obukhov stability length L through comparison with the log linear law for stable conditions and the interpolation law for unstable conditions. As expected, for neutral conditions the results show that m and C are approximately equal to 1/7 and 6, respectively. Parameter C increases slightly whereas m decreases with decreasing stability.",

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N2 - The parameters C and m of a power law for the wind profile u = Cu*(z/z0)m, where u* is the friction velocity and z0 is the roughness length of the surface, are determined as functions of the roughness and of the Monin‐Obukhov stability length L through comparison with the log linear law for stable conditions and the interpolation law for unstable conditions. As expected, for neutral conditions the results show that m and C are approximately equal to 1/7 and 6, respectively. Parameter C increases slightly whereas m decreases with decreasing stability.

AB - The parameters C and m of a power law for the wind profile u = Cu*(z/z0)m, where u* is the friction velocity and z0 is the roughness length of the surface, are determined as functions of the roughness and of the Monin‐Obukhov stability length L through comparison with the log linear law for stable conditions and the interpolation law for unstable conditions. As expected, for neutral conditions the results show that m and C are approximately equal to 1/7 and 6, respectively. Parameter C increases slightly whereas m decreases with decreasing stability.

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A Power Wind Law for Turbulent Transfer Computations

Abstract

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