Analysis of atmospheric flow over a surface protrusion using the turbulence kinetic energy equation

Autor:	George H. Fichtl, W. L. Harper, Walter Frost
Rok vydání:	1975
Předmět:	Physics Atmospheric Science Turbulence K-epsilon turbulence model Prandtl number Turbulence modeling Fluid mechanics Mechanics Physics::Fluid Dynamics symbols.namesake Classical mechanics Flow velocity Turbulence kinetic energy symbols Mean flow
Zdroj:	Boundary-Layer Meteorology. 8:401-417
ISSN:	1573-1472 0006-8314
DOI:	10.1007/bf02153560
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::1e35d80bc04cda80311bf09c149e6262 https://doi.org/10.1007/bf02153560 Zobrazit plný text záznamu Full text from SpringerLink