Nonlinear k-ε-fμ model and its application to the flow and heat transfer in a channel having one undulant wall

Tae Seon Park; Hang Seok Choi; Kenjiro Suzuki

doi:10.1016/j.ijheatmasstransfer.2003.10.038

Nonlinear k-ε-fμ model and its application to the flow and heat transfer in a channel having one undulant wall

Tae Seon Park, Hang Seok Choi, Kenjiro Suzuki

School of Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

35 Scopus citations

Abstract

Turbulent flows and related heat transfer over a fully developed wavy channel is investigated by a turbulence model. The nonlinear k-ε-f_μ model of Park et al. [Int. J. Heat Fluid Flow 24 (2003) 29] is slightly modified and their explicit heat flux model is employed. The Reynolds number is fixed at Re_b=6760 through all wave amplitudes and the wave amplitude is varied in the range 0≤a/λ≤0.15. The predicted results for wavy channel are validated by with comparing the DNS data of Maaß and Schumann [Flow Simulation with High Performance Computers, Notes on Numerical Fluid Mechanics 52 (1996) 227]. The model performance is shown to be generally satisfactory. By using k-ε-f_μ model, the enhancement of heat transfer and the characteristics of turbulent flow in wavy wall are investigated. Finally, the effects of wavy amplitude on separated shear layer and its consequent influence on heat transfer are scrutinized.

Original language	English
Pages (from-to)	2403-2415
Number of pages	13
Journal	International Journal of Heat and Mass Transfer
Volume	47
Issue number	10-11
DOIs	https://doi.org/10.1016/j.ijheatmasstransfer.2003.10.038
State	Published - May 2004

Keywords

Explicit heat flux model
Nonlinear k-ε-f model
Wavy wall

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10.1016/j.ijheatmasstransfer.2003.10.038

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title = "Nonlinear k-ε-fμ model and its application to the flow and heat transfer in a channel having one undulant wall",

abstract = "Turbulent flows and related heat transfer over a fully developed wavy channel is investigated by a turbulence model. The nonlinear k-ε-fμ model of Park et al. [Int. J. Heat Fluid Flow 24 (2003) 29] is slightly modified and their explicit heat flux model is employed. The Reynolds number is fixed at Reb=6760 through all wave amplitudes and the wave amplitude is varied in the range 0≤a/λ≤0.15. The predicted results for wavy channel are validated by with comparing the DNS data of Maa{\ss} and Schumann [Flow Simulation with High Performance Computers, Notes on Numerical Fluid Mechanics 52 (1996) 227]. The model performance is shown to be generally satisfactory. By using k-ε-fμ model, the enhancement of heat transfer and the characteristics of turbulent flow in wavy wall are investigated. Finally, the effects of wavy amplitude on separated shear layer and its consequent influence on heat transfer are scrutinized.",

keywords = "Explicit heat flux model, Nonlinear k-ε-f model, Wavy wall",

author = "Park, {Tae Seon} and Choi, {Hang Seok} and Kenjiro Suzuki",

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T1 - Nonlinear k-ε-fμ model and its application to the flow and heat transfer in a channel having one undulant wall

AU - Park, Tae Seon

AU - Choi, Hang Seok

AU - Suzuki, Kenjiro

PY - 2004/5

Y1 - 2004/5

N2 - Turbulent flows and related heat transfer over a fully developed wavy channel is investigated by a turbulence model. The nonlinear k-ε-fμ model of Park et al. [Int. J. Heat Fluid Flow 24 (2003) 29] is slightly modified and their explicit heat flux model is employed. The Reynolds number is fixed at Reb=6760 through all wave amplitudes and the wave amplitude is varied in the range 0≤a/λ≤0.15. The predicted results for wavy channel are validated by with comparing the DNS data of Maaß and Schumann [Flow Simulation with High Performance Computers, Notes on Numerical Fluid Mechanics 52 (1996) 227]. The model performance is shown to be generally satisfactory. By using k-ε-fμ model, the enhancement of heat transfer and the characteristics of turbulent flow in wavy wall are investigated. Finally, the effects of wavy amplitude on separated shear layer and its consequent influence on heat transfer are scrutinized.

AB - Turbulent flows and related heat transfer over a fully developed wavy channel is investigated by a turbulence model. The nonlinear k-ε-fμ model of Park et al. [Int. J. Heat Fluid Flow 24 (2003) 29] is slightly modified and their explicit heat flux model is employed. The Reynolds number is fixed at Reb=6760 through all wave amplitudes and the wave amplitude is varied in the range 0≤a/λ≤0.15. The predicted results for wavy channel are validated by with comparing the DNS data of Maaß and Schumann [Flow Simulation with High Performance Computers, Notes on Numerical Fluid Mechanics 52 (1996) 227]. The model performance is shown to be generally satisfactory. By using k-ε-fμ model, the enhancement of heat transfer and the characteristics of turbulent flow in wavy wall are investigated. Finally, the effects of wavy amplitude on separated shear layer and its consequent influence on heat transfer are scrutinized.

KW - Explicit heat flux model

KW - Nonlinear k-ε-f model

KW - Wavy wall

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VL - 47

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IS - 10-11

ER -

Nonlinear k-ε-fμ model and its application to the flow and heat transfer in a channel having one undulant wall

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Keywords

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