A model for turbulent dissipation rate in a constant pressure boundary layer

Estimation of the turbulent dissipation rate in a boundary layer is a very involved process. Experimental determination of either the dissipation rate or the Taylor microscale, even in isotropic turbulence, which may occur in a portion of the turbulent boundary layer, is known to be a difficult task...

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Bibliographic Details
Published inSadhana (Bangalore) Vol. 41; no. 4; pp. 435 - 439
Main Authors Dey, J, Phani Kumar, P
Format Journal Article
LanguageEnglish
Published New Delhi Springer India 01.04.2016
Subjects
Engineering
dissipation rate
Kolmogorov length scale
Taylor microscale
Boundary layers
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Summary:Estimation of the turbulent dissipation rate in a boundary layer is a very involved process. Experimental determination of either the dissipation rate or the Taylor microscale, even in isotropic turbulence, which may occur in a portion of the turbulent boundary layer, is known to be a difficult task. For constant pressure boundary layers, a model for the turbulent dissipation rate is proposed here in terms of the local mean flow quantities. Comparable agreement between the estimated Taylor microscale and Kolmogorov length scale with other data in the logarithmic region suggests usefulness of this model in obtaining these quantities experimentally.
ISSN:0256-2499
0973-7677
DOI:10.1007/s12046-016-0480-0