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- W2331997599 abstract "In the combustion stability assessment of internal burning solid rocket motors, a new destabilizing term must be incorporated. This term arises from the nonzero radial velocity oscillations at the propellant surface. The origin of this velocity component stems from a careful resolution of intrinsic fluid dynamics, including acoustico-vortical interactions that must satisfy mass and momentum conservation principles while accommodating the no-slip condition at the propellant surface. The source of this destabilizing term appears explicitly in two separate, independently derived, analytical formulations of the internal flowfield. Predictions generated by these analytical models are shown to coincide with reliable computational data produced recently by a numerical code that solves the nonlinearized Navier-Stokes equations. Unequivocal verifications of the analytical formulations via theoretical considerations, numerical comparisons, and global error assessments are also undertaken before examining the character and impact of the time-dependent radial velocity on rocket stability. Irrevocably, radial velocity fluctuations induce an effect whose significance is reminiscent of pressure coupling at the propellant surface. It is suggested that this effect be accounted for in current and future investigations." @default.
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- W2331997599 date "1998-07-13" @default.
- W2331997599 modified "2023-10-18" @default.
- W2331997599 title "Implications of unsteady analytical flowfields on rocket combustion stability" @default.
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- W2331997599 doi "https://doi.org/10.2514/6.1998-3698" @default.
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