TY - JOUR
T1 - Turbulent flow characteristics in a rectangular channel with repeated rib roughness
AU - Sato, H.
AU - Hishida, K.
AU - Maeda, M.
N1 - Copyright:
Copyright 2004 Elsevier B.V., All rights reserved.
PY - 1989
Y1 - 1989
N2 - The turbulent flow structure over a repeated-rib geometry rough-walled surface was investigated in connection with a two dimensional square rib roughness which was set on the internal surface of a rectangular channel. The upper plate with ribs of the same pitch can be shifted to arbitrary positions. Reynolds number of duct flow was set to 2.0×104, which was similar to the condition of practical heat exchangers. Flow measurements were performed using a compact fiber laser Doppler velocimeter (LDV) probe. The results of the detailed flow measurements indicated that a recirculating flow existed behind the rib on symmetric and staggered rib geometries. A remarkable large peak value of Reynolds shear stress was observed behind the rib on the staggered rib geometry.
AB - The turbulent flow structure over a repeated-rib geometry rough-walled surface was investigated in connection with a two dimensional square rib roughness which was set on the internal surface of a rectangular channel. The upper plate with ribs of the same pitch can be shifted to arbitrary positions. Reynolds number of duct flow was set to 2.0×104, which was similar to the condition of practical heat exchangers. Flow measurements were performed using a compact fiber laser Doppler velocimeter (LDV) probe. The results of the detailed flow measurements indicated that a recirculating flow existed behind the rib on symmetric and staggered rib geometries. A remarkable large peak value of Reynolds shear stress was observed behind the rib on the staggered rib geometry.
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M3 - Conference article
AN - SCOPUS:0024898012
SN - 0272-5673
VL - 107
SP - 191
EP - 196
JO - American Society of Mechanical Engineers, Heat Transfer Division, (Publication) HTD
JF - American Society of Mechanical Engineers, Heat Transfer Division, (Publication) HTD
T2 - Heat Transfer in Convective Flows
Y2 - 6 August 1989 through 9 August 1989
ER -