DSpace Repository

Application of a non isotropic turbulence model to stable atmospheric flows and dispersion over 3D topography

Show simple item record

dc.creator Boçon Fernando T.
dc.creator Maliska Clóvis R.
dc.date 2000
dc.date.accessioned 2013-05-30T11:24:21Z
dc.date.available 2013-05-30T11:24:21Z
dc.date.issued 2013-05-30
dc.identifier http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-73862000000100009
dc.identifier http://www.doaj.org/doaj?func=openurl&genre=article&issn=01007386&date=2000&volume=22&issue=1&spage=105
dc.identifier.uri http://koha.mediu.edu.my:8181/jspui/handle/123456789/4573
dc.description A non isotropic turbulence model is extended and applied to three dimensional stably stratified flows and dispersion calculations. The model is derived from the algebraic stress model (including wall proximity effects), but it retains the simplicity of the "eddy viscosity" concept of first order models. The "modified k-epsilon" is implemented in a three dimensional numerical code. Once the flow is resolved, the predicted velocity and turbulence fields are interpolated into a second grid and used to solve the concentration equation. To evaluate the model, various steady state numerical solutions are compared with small scale dispersion experiments which were conducted at the wind tunnel of Mitsubishi Heavy Industries, in Japan. Stably stratified flows and plume dispersion over three distinct idealized complex topographies (flat and hilly terrain) are studied. Vertical profiles of velocity and pollutant concentration are shown and discussed. Also, comparisons are made against the results obtained with the standard k-epsilon model.
dc.publisher The Brazilian Society of Mechanical Sciences
dc.source Journal of the Brazilian Society of Mechanical Sciences
dc.subject Atmospheric dispersion
dc.subject flow over hills
dc.subject anisotropic k-epsilon
dc.subject numerical simulation
dc.title Application of a non isotropic turbulence model to stable atmospheric flows and dispersion over 3D topography

Files in this item

Files Size Format View

There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record

Search DSpace

Advanced Search


My Account