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On the interaction between turbulence grids and boundary layers

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posted on 2023-06-09, 00:40 authored by Thomas IrpsThomas Irps, Vasudevan KanjirakkadVasudevan Kanjirakkad
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.

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Publication status

  • Published

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  • Published version

Journal

European Physical Journal Web of Conferences

ISSN

2100-014X

Publisher

EPJ Journals

Volume

114

Article number

a02048

Department affiliated with

  • Engineering and Design Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2016-03-30

First Open Access (FOA) Date

2016-03-30

First Compliant Deposit (FCD) Date

2016-03-30

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