Heat Transfer in a Rectangular Groove with Heated Bottom Surface in Laminar Forced Flow Field

Yamamoto, H.; Seki, Nobuhiro; Fukusako, Shoichiro

doi:10.1299/kikai1938.43.2662

Cited by 1 publication

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“…Seki et al [2] discussed numerically the effects of an inflow velocity profile and buoyancy force on heat transfer rate at heated wall downstream of a sudden enlargement of a two-dimensional duct. Yamamoto et al [3] analized laminar heat transfer in rectangular cavity, and discussed qualitatively the effects of free-stream velocity, buoyancy force and depth of cavity on flow and temperature fields inside cavity. Taniguchi et al [4] reported the hydrodynamic characteristics of flow over an upward-facing step in connection with the behavior of separation eddy to be formed in front of the step.…”

Section: Introductionmentioning

confidence: 99%

A numerical study of laminar heat transfer at bottom surface of a cavity submerged in separated flow region of duct

Yamamoto

Seki

Fukusako

1982

Wärme- und Stoffübertragung

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Abstract. For the two cavity models whose upward and downward wall heights are different from each other, laminar heat transfer is studied numerically in a finite difference method. The effects of cavity configuration, free-stream velocity and buoyancy force on flow and temperature fields as well as heat transfer at the bottom surface are discussed.The flow pattern of DOF (Downward-Facing cavity)-model is more intricated than that of UPF (Upward-Facing cavity)-model, depending on the aspect ratio of cavity or main flow velocity. The mean Nusselt number Num at the bottom surface of both cavity models tends generally to increase with increasing Re~, or Grw/Re}. However, in the flow region of Rel~ >-500 for DOFcavity, the Nu,~ for 0.4 _-__ D~/D~ ~= 0.6 is somewhat lower than that obtained from the other cavities and does not always increase with increasing ReH.

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Section: Introductionmentioning

confidence: 99%