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Estimating the turbulent energy dissipation rate in an airport environment

Frech, Michael (2007) Estimating the turbulent energy dissipation rate in an airport environment. Boundary-Layer Meteorology, 123, pp. 385-393. DOI: 10.1007/s10546-006-9149-2.

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This note reports on the influence of aircraft wake vortices on the estimation of the turbulent energy dissipation rate using sonic anemometer measurements near the runway threshold. The wake vortex traces, which are generated at a height of about 65m and subsequently evolve in ground effect, are clearly visible in the velocity components and temperature. The observed temperature increase of 1K appears related to the stably stratified atmospheric surface layer. The dissipation rate is estimated from the longitudinal velocity power spectrum for a sample in a nocturnal boundary layer with and without a wake vortex signal. In both cases an inertial subrange is found. For the analyzed sample the estimated dissipation rate is a factor of ten larger compared to the undisturbed sample. Implications for operational wake avoidance systems are discussed.

Document Type:Article
Title:Estimating the turbulent energy dissipation rate in an airport environment
AuthorsInstitution or Email of Authors
Date:20 February 2007
Journal or Publication Title:Boundary-Layer Meteorology
Refereed publication:Yes
In ISI Web of Science:Yes
Page Range:pp. 385-393
Keywords:Airport, Sonic anemometer, Turbulent energy dissipation rate, Wake vortex
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:L VU - Air Traffic and Environment (old)
DLR - Research area:Aeronautics
DLR - Program:L VU - Air Traffic and Environment
DLR - Research theme (Project):L - Wake Vortices (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Cloud Physics and Traffic Meteorology
Deposited By: Dr.-Ing. Frank Holzäpfel
Deposited On:24 Jul 2007
Last Modified:20 Oct 2014 14:31

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