Abstract
The two-dimensional asymmetric far wake behind a GAW(2) airfoil section is studied at low speeds. Mean velocity measurements have been made and analysed in the far wake, where initial asymmetric wake has become symmetric with respect to the minimum velocity line. Governing equations have been solved with appropriate boundary conditions in the far wake. Self-similarity solutions have been obtained for the governing equations for the mean velocity distributions. Results of self-similarity analysis have been compared with experimental data.
Highlights
Turbulent wake region is the region of flow behind the trailing edge of a body where the upstream boundary layers merge into one single shear layer
The aim of the present study is to analyse and understand far wake flow developing from initial asymmetric trailing edge conditions
Our focus was concentrated in the wake region beyond a distance of 200 trailing edge momentum thicknesses downstream of the trailing edge so that symmetry has been reached in the region of our interest
Summary
Turbulent wake region is the region of flow behind the trailing edge of a body where the upstream boundary layers merge into one single shear layer. The aim of the present study is to analyse and understand far wake flow developing from initial asymmetric trailing edge conditions. The present research was started with an aim to describe far wake, with initial asymmetric conditions, in terms of self-similarity solutions for governing equations. The three-dimensional asymmetric turbulent near wake behind a swept wing with GAW(2) airfoil cross section has been studied extensively[6]. Their studies showed that the turbulent wake which was asymmetric near the trailing edge exhibited symmetry by about a distance of 60 trailing edge momentum thicknesses downstream of the trailing edge[6]. Our focus was concentrated in the wake region beyond a distance of 200 trailing edge momentum thicknesses downstream of the trailing edge so that symmetry has been reached in the region of our interest
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