Calculation of nozzle/aftbody flowfield interactions
Abstract
A numerical technique is presented to analyze the influence of two-dimensional and axisymmetric aftbody flowfields on the performance of propulsive nozzles. The analysis employs a numerical technique based on the strong conservation law form of the governing equations for fluid flow (i.e., the Navier-Stokes equations), and uses an implicit Beam-Warming algorithm to obtain the steady-state solution as the asymptotic solution in time. Characteristic boundary point unit processes are utilized, and a comparison is made between extrapolated boundary point unit processes and numerical method of characteristics boundary point unit processes. Two-equation turbulence models are investigated and a comparison is made between zero- and two-equation turbulence models for several representative flow cases.
Degree
Ph.D.
Advisors
Hoffman, Purdue University.
Subject Area
Mechanical engineering
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