publication . Article . 2001

Longitudinal acoustic instabilities in slender solid propellant rockets: linear analysis

Amable Liñán; J. E. García-Schäfer;
Open Access
  • Published: 22 Jun 2001 Journal: Journal of Fluid Mechanics, volume 437, pages 229-254 (issn: 0022-1120, eissn: 1469-7645, Copyright policy)
  • Publisher: Cambridge University Press (CUP)
  • Country: Spain
Abstract
<jats:p>To describe the acoustic instabilities in the combustion chambers of laterally burning solid propellant rockets the interaction of the mean flow with the acoustic waves is analysed, using multiple scale techniques, for realistic cases in which the combustion chamber is slender and the nozzle area is small compared with the cross-sectional area of the chamber. Associated with the longitudinal acoustic oscillations we find vorticity and entropy waves, with a wavelength typically small compared with the radius of the chamber, penetrating deeply into the chamber. We obtain a set of differential equations to calculate the radial and axial dependence of the am...
Subjects
arXiv: Physics::Fluid Dynamics
free text keywords: Mechanical Engineering, Mechanics of Materials, Condensed Matter Physics, Química, Física, Acoustic wave, Rocket, business.product_category, business, Classical mechanics, Vorticity, Longitudinal wave, Mechanics, Ion acoustic wave, Combustion chamber, Nozzle, Propellant, Physics
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