TY - JOUR
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.
N1 - Copyright:
Copyright 2014 Elsevier B.V., All rights reserved.
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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U2 - 10.1016/0142-727X(95)00048-U
DO - 10.1016/0142-727X(95)00048-U
M3 - Article
AN - SCOPUS:6144231246
SN - 0142-727X
VL - 16
SP - 398
EP - 404
JO - International Journal of Heat and Fluid Flow
JF - International Journal of Heat and Fluid Flow
IS - 5
ER -