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Record 1 of 29665
Analysis of atmospheric flow over a surface protrusion using the turbulence kinetic energy equation
External Online Source: doi:10.1007/BF02153560
Author and Affiliation:
Frost, W.
Harper, W. L.(Tennessee, University, Tullahoma, Tenn., United States)
Fichtl, G. H.(NASA Marshall Space Flight Center, Huntsville, Ala., United States)
Abstract: Atmospheric flow fields resulting from a semi-elliptical surface obstruction in an otherwise horizontally homogeneous statistically stationary flow are modelled with the boundary-layer/Boussinesq-approximation of the governing equation of fluid mechanics. The turbulence kinetic energy equation is used to determine the dissipative effects of turbulent shear on the mean flow. Mean-flow results are compared with those given in a previous paper where the same problem was attacked using a Prandtl mixing-length hypothesis. Iso-lines of turbulence kinetic energy and turbulence intensity are plotted in the plane of the flow. They highlight regions of high turbulence intensity in the stagnation zone and sharp gradients in intensity along the transition from adverse to favourable pressure gradient.
Publication Date: Jun 01, 1975
Document ID:
19750059205
(Acquired Dec 01, 1995)
Accession Number: 75A43277
Subject Category: METEOROLOGY AND CLIMATOLOGY
Document Type: Journal Article
Publication Information: Boundary-Layer Meteorology; p. Apr; 8
Publisher Information: Netherlands
Financial Sponsor: NASA; United States
Description: 17p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: ATMOSPHERIC BOUNDARY LAYER; ATMOSPHERIC TURBULENCE; KINETIC ENERGY; SURFACE ROUGHNESS EFFECTS; WIND SHEAR; AIRPORT PLANNING; ATMOSPHERIC MODELS; BOUNDARY LAYER EQUATIONS; ENERGY DISSIPATION; FLOW DISTORTION; FLOW VELOCITY; MIXING LENGTH FLOW THEORY; VELOCITY DISTRIBUTION
Imprint And Other Notes: Boundary-Layer Meteorology, vol. 8, Apr.-June 1975, p. 401-417.
Miscellaneous Notes: June 1975, p. 401-417
Availability Source: Other Sources
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