Computation of Turbulent Flow through Constrictions

The turbulent flow through an axisymmetric constriction in a tube is studied using the k‐ε. turbulence model where k is the turbulence kinetic energy and e is its dissipation rate. A new algorithm is used to solve the difference equations obtained from k and transport equations simultaneously, leadi...

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Bibliographic Details
Published in:Journal of engineering mechanics 1983-04, Vol.109 (2), p.466-478
Main Authors: Deshpande, Mohan D, Giddens, Don P
Format: Article
Language:English
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TECHNICAL PAPERS
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Summary:The turbulent flow through an axisymmetric constriction in a tube is studied using the k‐ε. turbulence model where k is the turbulence kinetic energy and e is its dissipation rate. A new algorithm is used to solve the difference equations obtained from k and transport equations simultaneously, leading to faster convergence of the numerical scheme. The results are compared with the experimental data obtained using a laser Doppler anemometer. The turbulence model predicts mean velocity reasonably well upstream of the constriction but falls short in its ability downstream of the constriction. The model does not predict the turbulence kinetic energy accurately. The model correctly predicts the presence of a recirculating region. However, this region is found to be thinner and shorter than the one measured experimentally.
ISSN:0733-9399
1943-7889
DOI:10.1061/(ASCE)0733-9399(1983)109:2(466)