On the interaction between turbulence grids and boundary layers

Irps, Thomas John Berend and Kanjirakkad, Vasudevan (2016) On the interaction between turbulence grids and boundary layers. European Physical Journal Web of Conferences, 114. ISSN 2100-014X

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Abstract

Turbulence grids are widely used in wind tunnels to produce representative turbulence levels when testing aerodynamic phenomena around models. Although the purpose of the grid is to introduce a desired turbulence level in the freestream flow, the wall boundary layers of the tunnel are subjected to modification due to the presence of such grids. This could have major implications to the flow around the models to be tested and hence there is a need to further understand this interaction. The study described in this paper examines wind tunnel wall boundary layer modification by turbulence grids of different mesh sizes and porosities to understand the effect of these parameters on such interaction. Experimental results are presented in the form of pressure loss coefficients, boundary layer velocity profiles and the statistics of turbulence modification.

Item Type: Article
Schools and Departments: School of Engineering and Informatics > Engineering and Design
Subjects: Q Science
T Technology
T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TA Engineering (General). Civil engineering (General) > TA0329 Engineering mathematics. Engineering analysis
T Technology > TA Engineering (General). Civil engineering (General) > TA0349 Mechanics of engineering. Applied mechanics > TA0357 Applied fluid mechanics
T Technology > TJ Mechanical engineering and machinery
Depositing User: Vasudevan Kanjirakkad
Date Deposited: 30 Mar 2016 08:43
Last Modified: 15 Mar 2017 02:12
URI: http://sro.sussex.ac.uk/id/eprint/60153

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