Three-Dimensional Steady Flow Computations in Manifold-Type Junctions and a Comparison with Experiment General Motors NAO R&D Center

Format:

Conference/Event

Author/Creator:

Kuo, Tang-Wei, author.

Conference Name:

Aerospace Technology Conference & Exposition (1993-09-20 : Anaheim, California, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1993

Summary:

Results of three-dimensional steady flow calculations are compared with existing pressure and velocity-measurements of two manifold-type junctions. The junctions consist of a main duct and a side branch, both with the same rectangular cross section, with the side branch joining the main duct at an angle of either 90 or 45 degrees. Both combining and dividing flow configurations are considered for different total mass flow rates and different side-branch-to-main-duct mass flow ratios.One objective of this investigation was to assess the effects of numerical differencing scheme and mesh refinement on solution accuracy, and both parameters showed strong influences on the computed results. It is shown that calculations should be made with the highest possible level of numerical accuracy and grid resolution in regions of flow recirculation.Comparisons of computed and measured velocities, static pressures, and flow loss coefficients are presented in this paper. For most cases considered, the model predictions are in good agreement with the measurements. Results can be used as input loss coefficients to an engine-simulation code, in addition to being used to evaluate a specific junction design

Notes:

Vendor supplied data

Publisher Number:

932511

Access Restriction:

Restricted for use by site license