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Dissertation/Thesis Abstract

Numerical modeling of LOX/methane impingement, evaporation, and combustion
by Harpal, Naimishkumar, M.S., California State University, Long Beach, 2011, 80; 1490385
Abstract (Summary)

A computational fluid dynamics approach is used to model the impingement and subsequent combustion of LOX/LCH4 "green" propellants. The objective of this investigation is to assess the capabilities of current state-of-the-art CFD codes, here STAR-CCM+ v5.2, to model the associated multi-phase, multi-component, reacting flow field. The two multiphase methods, Volume of Fluid and Lagrangian Discrete Droplet, are evaluated to model the like-on-like and unlike doublet impingement configurations. Subsequently, droplet combustion simulation is performed in Lagrangian-Eulerian coupled framework using integrated models including Standard Eddy Break-Up combustion, quasi-steady evaporation, and RANS k-ϵ turbulence models. For an oxidizer-to-fuel ratio of3.4, flame temperatures of2880 K and 2670 K are predicted for two different kinds of Lagrangian injectors, point and cone, respectively, which, as expected, is less than the Chemical Equilibrium Analysis prediction of 3000 K. Besides recommendations in current methodology, an outline of modeling multi-species reaction in immiscible multiphase domain is presented.

Indexing (document details)
Advisor: Toossi, Reza
School: California State University, Long Beach
School Location: United States -- California
Source: MAI 49/04M, Masters Abstracts International
Subjects: Applied Mathematics, Aerospace engineering, Mechanical engineering
Publication Number: 1490385
ISBN: 978-1-124-54855-5
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