Experimental and computational study of turbulent heat transfer characteristics in serrated channel flow

S. Obi; K. P. Kobayashi; A. M. Bethancourt; H. Yoshida; T. Asano; R. Echigo

doi:10.1016/0142-727X(95)00048-U

Experimental and computational study of turbulent heat transfer characteristics in serrated channel flow

S. Obi, K. P. Kobayashi, A. M. Bethancourt, H. Yoshida, T. Asano, R. Echigo

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2 Citations (Scopus)

Abstract

A two-dimensional (2-D) channel with a serrated wall is proposed as a device for heat transfer augmentation. Measurements of the flow velocity in the whole field as well as of the heat transfer coefficient along the wall are undertaken for two different channel heights. The same flow fields are calculated using a second-moment closure and the standard k-e model. The flow field containing successive separation and reattachment partly resembles the conventional backward-facing step flow, although the extremely high turbulence level found in the present configuration indicates a promising performance of the serrated channel as a heat transfer promoter.

Original language	English
Pages (from-to)	398-404
Number of pages	7
Journal	International Journal of Heat and Fluid Flow
Volume	16
Issue number	5
DOIs	https://doi.org/10.1016/0142-727X(95)00048-U
Publication status	Published - 1995 Oct

Keywords

application of turbulence models
heat transfer augmentation
laser Doppler anenometry measurements
separation and impingement
turbulent flows

ASJC Scopus subject areas

Condensed Matter Physics
Mechanical Engineering
Fluid Flow and Transfer Processes

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10.1016/0142-727X(95)00048-U

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title = "Experimental and computational study of turbulent heat transfer characteristics in serrated channel flow",

abstract = "A two-dimensional (2-D) channel with a serrated wall is proposed as a device for heat transfer augmentation. Measurements of the flow velocity in the whole field as well as of the heat transfer coefficient along the wall are undertaken for two different channel heights. The same flow fields are calculated using a second-moment closure and the standard k-e model. The flow field containing successive separation and reattachment partly resembles the conventional backward-facing step flow, although the extremely high turbulence level found in the present configuration indicates a promising performance of the serrated channel as a heat transfer promoter.",

keywords = "application of turbulence models, heat transfer augmentation, laser Doppler anenometry measurements, separation and impingement, turbulent flows",

author = "S. Obi and Kobayashi, {K. P.} and Bethancourt, {A. M.} and H. Yoshida and T. Asano and R. Echigo",

year = "1995",

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T1 - Experimental and computational study of turbulent heat transfer characteristics in serrated channel flow

AU - Obi, S.

AU - Kobayashi, K. P.

AU - Bethancourt, A. M.

AU - Yoshida, H.

AU - Asano, T.

AU - Echigo, R.

PY - 1995/10

Y1 - 1995/10

N2 - A two-dimensional (2-D) channel with a serrated wall is proposed as a device for heat transfer augmentation. Measurements of the flow velocity in the whole field as well as of the heat transfer coefficient along the wall are undertaken for two different channel heights. The same flow fields are calculated using a second-moment closure and the standard k-e model. The flow field containing successive separation and reattachment partly resembles the conventional backward-facing step flow, although the extremely high turbulence level found in the present configuration indicates a promising performance of the serrated channel as a heat transfer promoter.

AB - A two-dimensional (2-D) channel with a serrated wall is proposed as a device for heat transfer augmentation. Measurements of the flow velocity in the whole field as well as of the heat transfer coefficient along the wall are undertaken for two different channel heights. The same flow fields are calculated using a second-moment closure and the standard k-e model. The flow field containing successive separation and reattachment partly resembles the conventional backward-facing step flow, although the extremely high turbulence level found in the present configuration indicates a promising performance of the serrated channel as a heat transfer promoter.

KW - application of turbulence models

KW - heat transfer augmentation

KW - laser Doppler anenometry measurements

KW - separation and impingement

KW - turbulent flows

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JF - International Journal of Heat and Fluid Flow

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Experimental and computational study of turbulent heat transfer characteristics in serrated channel flow

Abstract

Keywords

ASJC Scopus subject areas

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