Standard deviation of vertical two-point longitudinal velocity differences in the atmospheric boundary layer

✍ Scribed by George H. Fichtl

• Publisher: Springer
• Year: 1971
• Tongue: English
• Weight: 681 KB
• Volume: 2
• Category: Article
• ISSN: 0006-8314
• DOI: 10.1007/bf00192124

✦ Synopsis

The standard deviation a of vertical two-point longitudinal velocity fluctuation differences is analyzed experimentally with eleven sets of turbulence measurements obtained at the NASA 150-m ground-winds tower site at Cape Kennedy, Florida. It is concluded that a/uo is proportional to (fAz/u.o) 0 . 22 , where the coefficient of proportionality is a function of fi/uo and u.o/fLo. The quantities fand Lo denote the Coriolis parameter and the surface Monin-Obukhov stability length, respectively; u*o is the surface friction velocity; Az is the vertical distance between the two points over which the velocity difference is calculated; and f is the mean height of the mid-point of the interval Az above natural grade. The results of the analysis are valid for 20 < -uo/fLo < 2000.