Computational modeling of the atmospheric boundary layer using various two-equation turbulence models

Kozmar, Hrvoje and Juretić, Franjo (2014) Computational modeling of the atmospheric boundary layer using various two-equation turbulence models. = Computational modeling of the atmospheric boundary layer using various two-equation turbulence models. Wind and Structures, An International Journal, 19 (6). pp. 687-708. ISSN 1226-6116. Vrsta rada: ["eprint_fieldopt_article_type_article" not defined]. Kvartili JCR: Q2 (2013). Točan broj autora: 2.

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Official URL: https://www.researchgate.net/profile/Hrvoje_Kozmar...

Abstract

The performance of the k-ε and k-ω two-equation turbulence models was investigated in computational simulations of the neutrally stratified atmospheric boundary layer developing above various terrain types.This wasachieved by using a proposed methodology that mimics the experimental setup in the boundary layer wind tunnel and accounts for a decrease in turbulence parameters with height, as observed in the atmosphere. An important feature of this approach is pressure regulation along the computational domain that is additionally supported by the nearly constant turbulent kinetic energy to Reynolds shear stress ratio at all heights.In addition to the mean velocity and turbulent kinetic energy commonly simulated in previous relevant studies, this approach focuses on the appropriate prediction of Reynolds shear stress as well. The computational results agree very well with experimental results. In particular, the difference between the calculated and measured mean velocity, turbulent kinetic energy and Reynolds shear stress profiles is less than ±10 in most parts of the computational domain. Copyright © 2014 Techno-Press, Ltd.

Item Type: Article (["eprint_fieldopt_article_type_article" not defined])
Keywords (Croatian): Atmospheric boundary layer; Atmospheric turbulence; Computation theory; Computer simulation; Flow measurement; Kinetic energy; Kinetics; Navier Stokes equations; Shear flow; Shear stress; Turbulence models; Wind tunnels; Boundary layer wind tunnel; Computational model; Computational simulation; Navier Stokes; Neutrally stratified; Reynolds shear stress; Turbulent kinetic energy; Two-equation turbulence models; Atmospheric thermodynamics
Subjects: NATURAL SCIENCES > Physics
TECHNICAL SCIENCE > Geodesy
TECHNICAL SCIENCE > Mechanical Engineering
Divisions: 1400 Department of fluid mechanics > 1420 Chair of environment and construction aerodynamics
Indexed in Web of Science: Yes
Indexed in Current Contents: Yes
Citations JCR: 0 (22.08.2017.)
Quartiles: Q2 (2013)
Date Deposited: 27 May 2015 11:56
Last Modified: 22 Aug 2017 10:20
URI: http://repozitorij.fsb.hr/id/eprint/4269

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