publication . Article . 2018

Numerical evaluation of acoustic characteristics and their damping of a thrust chamber using a constant-volume bomb model

Jianxiu QIN; Huiqiang ZHANG; Bing WANG;
Open Access
  • Published: 01 Mar 2018 Journal: Chinese Journal of Aeronautics, volume 31, pages 470-480 (issn: 1000-9361, Copyright policy)
  • Publisher: Elsevier BV
In order to numerically evaluate the acoustic characteristics of liquid rocket engine thrust chambers by means of a computational fluid dynamics method, a mathematical model of an artificial constant-volume bomb is proposed in this paper. A localized pressure pulse with a very high amplitude can be imposed on specified regions in a combustion chamber, the numerical procedure of which is described. Pressure oscillations actuated by the released constant-volume bomb can then be analyzed via Fast Fourier Transformation (FFT), and their modes can be identified according to the theoretical acoustic eigenfrequencies of the thrust chamber. The damping performances of t...
free text keywords: Mechanical Engineering, Aerospace Engineering, Liquid-propellant rocket, Combustion chamber, Mechanics, Damping capacity, Mathematics, Amplitude, Combustor, Control theory, Damping factor, Computational fluid dynamics, business.industry, business, Thrust, Motor vehicles. Aeronautics. Astronautics, TL1-4050
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publication . Article . 2018

Numerical evaluation of acoustic characteristics and their damping of a thrust chamber using a constant-volume bomb model

Jianxiu QIN; Huiqiang ZHANG; Bing WANG;