Committee Chair

Taylor, Lafayette K.

Committee Member

Sreenivas, Kidambi; Webster, Robert S.; Matthews, John V.

Department

Dept. of Computational Engineering

College

College of Engineering and Computer Science

Publisher

University of Tennessee at Chattanooga

Place of Publication

Chattanooga (Tenn.)

Abstract

Subsonic flow of a compressible, viscous fluid through a compact, high-offset S-duct is studied using numerical simulation of the Reynolds-averaged Navier-Stokes equations on an unstructured grid in three spatial dimensions. Results are compared to existing experimental steady-state data to validate the computed solutions. Effects of grid resolution, including boundary layer spacing and localized refinement are considered resulting in recommendations for best practices in developing grids for future S-duct studies. Methods of sampling steady-state pressure data are compared, resulting in a clearer understanding of the ability of the standard 40-probe instrumentation to capture the flow features. Simulations are conducted using the Spalart-Allmaras, Menter SAS and two-equation k − ε/k − ω turbulence models to determine which models best capture the relevant flow features. None of the tested turbulence models produces a solution which is clearly a better fit to the experimental data in comparison to the other turbulence models.

Degree

M. S.; A thesis submitted to the faculty of the University of Tennessee at Chattanooga in partial fulfillment of the requirements of the degree of Master of Science.

Date

5-2014

Subject

Navier-Stokes equations; Fluid dynamics -- Computer simulation; Turbulence -- Mathematical models

Keyword

Computational fluid dynamics; Navier-Stokes; S-duct

Document Type

Masters theses

Extent

xvi, 83 leaves

Language

English

Rights

Under copyright.

License

http://creativecommons.org/licenses/by-nc-nd/3.0/

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