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Please use this identifier to cite or link to this item: http://hdl.handle.net/1807/25568

Title: Towards a Design Tool for Turbomachinery
Authors: Epp, Duane R.
Advisor: Zingg, David W.
Department: Aerospace Science and Engineering
Keywords: CFD
Turbine
Navier-Stokes
Finite-Difference
cascade
turbomachinery
approximate-factorization
spalart-allmaras
Issue Date: 31-Dec-2010
Abstract: A two-dimensional thin-layer Navier-Stokes cascade flow solver for turbomachinery is developed. A second-order finite-difference scheme and a second and fourth-difference dissipation scheme are used. Periodic and non-reflecting inlet and outlet boundary conditions are implemented into the approximate-factorization numerical method. Turbulence is modeled through the one-equation Spalart-Allmaras model. A two-dimensional turbomachinery cascade structured grid generator is developed to produce six-block H-type grids. The validity of this work is tested in various ways. A grid convergence study is performed showing the effect of grid density. The non-reflecting inlet and outlet boundary conditions are tested for boundary placement influence. Comparisons of the flow solver numerical results are performed against experimental results. A Mach number sweep and angle of attack sweep are performed on two similar transonic turbine cascades.
URI: http://hdl.handle.net/1807/25568
Appears in Collections:Master
Institute for Aerospace Studies - Master theses

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