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2D numerical study of circular synthetic jets in quiescent flows

Published online by Cambridge University Press:  03 February 2016

H. Tang  and
S. Zhong
H. Tang
Affiliation:
School of Mechanical, Aerospace and Civil Engineering, The University of Manchester, UK
S. Zhong
Affiliation:
School of Mechanical, Aerospace and Civil Engineering, The University of Manchester, UK
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Abstract

2D numerical simulations of flows generated by a synthetic jet actuator with a circular orifice were conducted at two different diaphragm displacement settings, one representing a typical laminar case and the other a fully turbulent case. The flow in the cavity was included in the computation in order to provide more accurate predictions. A velocity boundary condition was applied at the neutral position of the diaphragm to account for its temporal deformation. Comparisons were made between the computational results and existing PIV and hot-wire data in terms of the time sequence of the velocity vector field, velocity variations in space and with time. It is found that computational results for the laminar case agree well with the experimental data. Four turbulent models were tested for the fully turbulent case. It was found that the predictions using the RNG κ-ε and Standard k-ε models were reasonably close to the experimental data. This initial study has produced some encouraging evidence for the capacity of FLUENT in simulating the key features of synthetic jets.

Type
Research Article
Information
The Aeronautical Journal , Volume 109 , Issue 1092 , February 2005 , pp. 89 - 97
Copyright
Copyright © Royal Aeronautical Society 2005 

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