Sherry, Michael and Lo Jacono, David and Sheridan, John
An experimental investigation of the recirculation zone formed downstream of a forward facing step.
(2010)
Journal of Wind Engineering & Industrial Aerodynamics, 98 (12). 888-894. ISSN 0167-6105
|
(Document in English)
PDF (Author's version) - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader 711kB |
Official URL: http://dx.doi.org/10.1016/j.jweia.2010.09.003
Abstract
An experimental investigation of the recirculation zone formed downstream of a forward facing step immersed in a turbulent boundary layer has been undertaken using particle image velocimetry. Bluff body flow is observed with the fixed separation point located at the leading edge of the step. The recirculation region dimensions are characterised over a range of Reynolds numbers (1400–19 000), with Reh based on the step height and the free stream velocity. Turbulent perturbations are produced in the free shear layer which develops between the recirculating flow close to the step and the free stream flow. Contour maps of amplification factor, streamwise perturbation velocity and Reynolds stresses are constructed, providing insight into optimal placement of structures within such topographical features. The mechanisms affecting the reattachment distance, namely the turbulent mixing within the boundary layer and the velocity deficit in the boundary layer, are discussed.
Item Type: | Article |
---|---|
Additional Information: | Thanks to Elsevier editor. The definitive version is available at http://www.sciencedirect.com The original PDF of the article can be found at Journal of Wind Engineering & Industrial Aerodynamics website : http://www.sciencedirect.com/science/journal/01676105 |
HAL Id: | hal-03547404 |
Audience (journal): | International peer-reviewed journal |
Uncontrolled Keywords: | |
Institution: | French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE) Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE) Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE) Other partners > Monash University (AUSTRALIA) |
Laboratory name: | |
Statistics: | download |
Deposited On: | 12 Jul 2012 15:12 |
Repository Staff Only: item control page