Analytical investigation of transient diffuser wave phenomena
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Authors
Aanerud, Kenneth Dean
Subjects
Supersonic Diffuser
Unsteady one-dimensional flow
Gas Dynamic Lasers
Unsteady one-dimensional flow
Gas Dynamic Lasers
Advisors
Biblarz, O.A.
Date of Issue
1974-06
Date
Publisher
Language
en_US
Abstract
A computer program was developed to solve the quasi-one- dimensional, unsteady flow problem associated with starting phenomena in various nozzle-short diffuser combinations of interest to gas dynamic lasers. The program was based on the techniques developed by George Rudinger in his book, Wave Diagrams for Nonsteady Flow in Ducts. The techniques were modified to facilitate a fixed grid for computational ease. The program was used to analyze the starting transients of a Mach 3 nozzle with a semi-wedge diffuser. Results indi- cated that for a given inlet/exhaust pressure ratio, diffuser starts could be obtained at higher ramp angles for thin dif- fusers than for thick diffusers.
Type
Thesis
Description
Series/Report No
Department
Aeronautical Engineering
Organization
Naval Postgraduate School
Identifiers
NPS Report Number
Sponsors
Funder
Format
Citation
Distribution Statement
Approved for public release; distribution is unlimited.