Secondary flow and forced convection heat transfer near endwall boundary layer fences in a 90° turning duct

Cengiz Camci; Dean H. Rizzo

doi:10.1016/S0017-9310(01)00181-8

Secondary flow and forced convection heat transfer near endwall boundary layer fences in a 90° turning duct

Cengiz Camci, Dean H. Rizzo

Aerospace Engineering

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

25 Scopus citations

Abstract

The present study deals with the secondary flow and heat transfer aspects of endwall boundary layer fences in 90° turning ducts. Boundary layer fences have recently been re-introduced as additional components to achieve favorable aerothermal effects in turbine/compressor passages and internal cooling systems. The turbine passage or internal coolant channel is simulated by a 90° turning duct (Re_D = 360,000) to study the aerothermal interaction of the boundary layer fence and the passage flow that is dominated by the passage vortices. Specifically, a single boundary layer fence of varying dimensions is attached to a heated endwall of the duct. The current study adds to the currently small number of investigations on the use of endwall boundary layer fences and their aerothermal interaction with the passage flow system.

Original language	English (US)
Pages (from-to)	831-843
Number of pages	13
Journal	International Journal of Heat and Mass Transfer
Volume	45
Issue number	4
DOIs	https://doi.org/10.1016/S0017-9310(01)00181-8
State	Published - Dec 18 2001

All Science Journal Classification (ASJC) codes

Condensed Matter Physics
Mechanical Engineering
Fluid Flow and Transfer Processes

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10.1016/S0017-9310(01)00181-8

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abstract = "The present study deals with the secondary flow and heat transfer aspects of endwall boundary layer fences in 90° turning ducts. Boundary layer fences have recently been re-introduced as additional components to achieve favorable aerothermal effects in turbine/compressor passages and internal cooling systems. The turbine passage or internal coolant channel is simulated by a 90° turning duct (ReD = 360,000) to study the aerothermal interaction of the boundary layer fence and the passage flow that is dominated by the passage vortices. Specifically, a single boundary layer fence of varying dimensions is attached to a heated endwall of the duct. The current study adds to the currently small number of investigations on the use of endwall boundary layer fences and their aerothermal interaction with the passage flow system.",

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AB - The present study deals with the secondary flow and heat transfer aspects of endwall boundary layer fences in 90° turning ducts. Boundary layer fences have recently been re-introduced as additional components to achieve favorable aerothermal effects in turbine/compressor passages and internal cooling systems. The turbine passage or internal coolant channel is simulated by a 90° turning duct (ReD = 360,000) to study the aerothermal interaction of the boundary layer fence and the passage flow that is dominated by the passage vortices. Specifically, a single boundary layer fence of varying dimensions is attached to a heated endwall of the duct. The current study adds to the currently small number of investigations on the use of endwall boundary layer fences and their aerothermal interaction with the passage flow system.

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Secondary flow and forced convection heat transfer near endwall boundary layer fences in a 90° turning duct

Abstract

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