Accession Number : AD0783864

Title :   Analytical Investigation of Transient Diffuser Wave Phenomena.

Descriptive Note : Master's thesis,


Personal Author(s) : Aanerud,Kenneth Dean

Report Date : JUN 1974

Pagination or Media Count : 76

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 indicated that for a given inlet/exhaust pressure ratio, diffuser starts could be obtained at higher ramp angles for thin diffusers than for thick diffusers. (Author)

Descriptors :   *Gas dynamic lasers, *Supersonic flow, *Computer programs, One dimensional flow, Axial flow compressors, Aircraft, Airborne, Nozzle gas flow, Theses

Subject Categories : Lasers and Masers
      Computer Programming and Software
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE