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u ′ v ′ Reynolds stress in the viscous sublayer over a wide range of Re numbers
Author(s) -
Rosén Christer,
Trägådh Christian
Publication year - 1994
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690400106
Subject(s) - turbulence , laminar sublayer , reynolds number , reynolds stress , mechanics , physics , range (aeronautics) , k epsilon turbulence model , materials science , composite material
To test the ability of different turbulence models to predict the turbulent momentum transport in the viscous sublayer, measurements are performed with a laser Doppler velocimeter (LDV). The main objective of the experiments is to measure the u ′ v ′ correlation in the near wall region. The results support the correlation: − u ′ v ′ + = A k y +3 . The results of 2‐D computer simulations using four different low Reynolds number k‐ϵ turbulence models are compared with the experimental LDV data. The models tested are the original low Reynolds number k‐ϵ model of Jones and Launder (1972, 1973) and three later modifications by Chien (1980), Lam and Bremhorst (1981), and Nagano and Hishida (1987). The u ′ v ′ correlation was found to be underestimated with all four models, but the Chien model was superior, with only a 40% underestimation in the viscous sublayer.