Flow modeling in turbofan mixing duct

Journal Article · Mon Aug 01 04:00:00 EDT 1994 · Numerical Heat Transfer. Part A, Applications; (United States)

DOI:https://doi.org/10.1080/10407789408955989· OSTI ID:7125873

Tsui, Y Y; Wu, P W ^[1]; Liao, C W ^[2]

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1. National Chiao Tung Univ., Hsinchu (Taiwan, Province of China)
2. Aeronautical Industry Development Center, Taichung (Taiwan, Province of China)

A computational procedure is described to study the mixing flow in a multilobe turbofan mixer. The predictions have been obtained using a finite volume method to solve the density-weighted time-averaged Navier-Stokes equations. Turbulence is characterized by the [kappa]-[epsilon] eddy viscosity model. To fit the irregular boundaries of the flow field, the curvilinear nonorthogonal coordinates are employed. The robustness of the computational procedure is enhanced by making use of nonstaggered grids. Results show that the streamwise vortex generated at the exit of the lobes dominates the performance of the mixing process. Comparison with experimental data indicates that good predictions can be obtained provided that sufficient inlet conditions are given.

• OSTI ID: 7125873
• Journal Information: Numerical Heat Transfer. Part A, Applications; (United States), Journal Name: Numerical Heat Transfer. Part A, Applications; (United States) Vol. 26:2; ISSN NHAAES; ISSN 1040-7782
• Country of Publication: United States
• Language: English

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42 ENGINEERING
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CALCULATION METHODS
ENGINES
EQUIPMENT
FLUID FLOW
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
MACHINERY
MATHEMATICAL MODELS
MIXING
TURBOFAN ENGINES
TURBOMACHINERY