Direct prediction of liquid rocket combustion instabilities with emphasis placed on velocity- and pressure-coupled responses

Gil Yong Lee, Woong Sup Yoon

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Aiming at a direct and quantitative prediction of unstable waves evolving in the liquid rocket combustor, a theoretical-numerical analysis is conducted. Instability equations in terms of perturbed flow variables are space-averaged to provide the timeintegrated ODE's in terms of modal amplification factors for pressure- and velocity-coupled unstable waves. Acoustics and combustion responses are fully coupled in the formulation and numerically solved in implicit manner. Effects of magnitude of perturbation, droplet lifetime, combustion region, and pressure-, velocity-coupled responses on the instabilities are discussed.

Original languageEnglish
Title of host publication38th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit
Publication statusPublished - 2002 Dec 1
Event38th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit 2002 - Indianapolis, IN, United States
Duration: 2002 Jul 72002 Jul 10

Publication series

Name38th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit

Other

Other38th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit 2002
CountryUnited States
CityIndianapolis, IN
Period02/7/702/7/10

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All Science Journal Classification (ASJC) codes

  • Aerospace Engineering
  • Control and Systems Engineering
  • Electrical and Electronic Engineering

Cite this

Lee, G. Y., & Yoon, W. S. (2002). Direct prediction of liquid rocket combustion instabilities with emphasis placed on velocity- and pressure-coupled responses. In 38th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit (38th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit).