Title page for ETD etd-12172008-063732


Type of Document Master's Thesis
Author Gupta, Ajay K.
URN etd-12172008-063732
Title Development of a new shock capturing formula for pressure correction methods
Degree Master of Science
Department Mechanical Engineering
Advisory Committee
Advisor Name Title
Moore, John Committee Chair
Brown, Eugene F. Committee Member
Ng, Fai Committee Member
Keywords
  • Pressure
Date of Defense 1993-12-05
Availability restricted
Abstract

Several methods have been developed to capture shock waves in turbo machinery flows, such as Moore's pressure correction procedure and Denton's time marching procedure. The time marching procedure is traditionally used for transonic flow calculations, whereas the pressure correction method is better suited for incompressible and subsonic flows. However, the focus of this research is on the Moore pressure correction flow code, the Moore Elliptical Flow Program (MEFP) , to calculate shock waves in transonic compressor fans.

A new pressure interpolation method, the 2M formula, is developed to improve the shock capturing capabilities of the MEFP flow code. The 2M formula is a two Mach number dependent formula, with Mach numbers Mi and M i + 1. The previously used pressure interpolation method, the M&M formula, is a one Mach number dependent formula, using the maximum of Mi and Mi + 1 . In the development of the 2M formula, J.G. Moore's stability criterion is applied to the pressure correction equation such that the center point coefficient is greater than the sum of the other positive coefficients.

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