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

Gil Yong Lee; Woong Sup Yoon

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

Gil Yong Lee, Woong Sup Yoon

Department of Mechanical Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference 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 language	English
Title of host publication	38th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit
Publication status	Published - 2002 Dec 1
Event	38th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit 2002 - Indianapolis, IN, United States Duration: 2002 Jul 7 → 2002 Jul 10

Publication series

Name	38th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit

Other

Other	38th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit 2002
Country	United States
City	Indianapolis, IN
Period	02/7/7 → 02/7/10

All Science Journal Classification (ASJC) codes

Aerospace Engineering
Control and Systems Engineering
Electrical and Electronic Engineering

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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).

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

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.",

author = "Lee, {Gil Yong} and Yoon, {Woong Sup}",

year = "2002",

month = dec,

day = "1",

language = "English",

isbn = "9781624101151",

series = "38th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit",

booktitle = "38th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit",

note = "38th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit 2002 ; Conference date: 07-07-2002 Through 10-07-2002",

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Lee, GY & Yoon, WS 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, 38th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit 2002, Indianapolis, IN, United States, 02/7/7.

Direct prediction of liquid rocket combustion instabilities with emphasis placed on velocity- and pressure-coupled responses. / Lee, Gil Yong; Yoon, Woong Sup.

38th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit. 2002. (38th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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N2 - 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.

AB - 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.

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