Numerical determination of nozzle admittances in rocket engines

Daniel Morgenweck, Jutta Pieringer, Thomas Sattelmayer

Publikation: Beitrag in Buch/Bericht/KonferenzbandKapitelBegutachtung

5 Zitate (Scopus)

Abstract

A numericalmethod in the time domain is introduced to assess the stability with respect to the nozzle's geometry in liquid rocket engines. A boundary condition for the injector plane in a combustion chamber is presented, where the mass flow fluctuations are set to zero. Thus the acoustic flux over the injector plane is zero even when there is mean flow normal to the boundary. Two ways of assessing the nozzles stability are shown. The first is to characterize the decaying of pressure oscillations means by the decay coefficient and the second is to determine the nozzle admittance. The procedures for obtaining both are described and the results are compared with the available experimental and analytical data.

OriginalspracheEnglisch
TitelNew Results in Numerical and Experimental Fluid Mechanics VII
UntertitelContributions to the 16th STAB/DGLR Symposium Aachen, Germany 2008
Redakteure/-innenAndreas Dillmann, Gerd Heller, Michael Klaas, Wolfgang Schroder, Hans-Peter Kreplin, Wolfgang Nitsche
Seiten579-586
Seitenumfang8
DOIs
PublikationsstatusVeröffentlicht - 2010

Publikationsreihe

NameNotes on Numerical Fluid Mechanics and Multidisciplinary Design
Band112
ISSN (Print)1612-2909

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