Numerical study on intense tangential oscillation in a simulated liquid rocket chamber

Taro Shimizu, Yuhi Morii, Dan Hori

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

A numerical simulation of the Navier-Stokes equations is conducted to investigate the intense 1T mode oscillation with a mean flow, and the characteristic features of the acoustic structure are revealed. The compressible perfect-gas Navier-Stokes equations are numerically solved using a finite volume solver on unstructured grids to capture a nonlinear acoustic structure. The viscosity and thermal conductivity are evaluated by the Sutherland law. When the amplitude of the pressure oscillation exceeded approximately 10-20% of the chamber plenum pressure, the nonlinear acoustic structure appeared, as in the case without a mean flow. The highest acoustic-pressure region was located away from the chamber wall, and the positive half-wave of the wall pressure had a twin-peak structure. On the other hand, the effect of a mean flow appeared as an axial movement of the global acoustic structure, which would induce a phase difference in the wall-pressure signal along the chamber axis.

Original languageEnglish
Pages (from-to)1795-1799
Number of pages5
JournalAIAA journal
Volume52
Issue number8
DOIs
Publication statusPublished - 2014 Aug
Externally publishedYes

ASJC Scopus subject areas

  • Aerospace Engineering

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