Interaction Between Longitudinal Acoustic Waves and Sidewall Injection in a Cavity (Slender Chamber)

  IJETT-book-cover  International Journal of Engineering Trends and Technology (IJETT)          
© 2017 by IJETT Journal
Volume-54 Number-2
Year of Publication : 2017
Authors : A. M., Hegab
DOI :  10.14445/22315381/IJETT-V54P215


A. M., Hegab "Interaction Between Longitudinal Acoustic Waves and Sidewall Injection in a Cavity(Slender Chamber)", International Journal of Engineering Trends and Technology (IJETT), V54(2),105-111 December 2017. ISSN:2231-5381. published by seventh sense research group

In this paper, analytical andcomputational studies are employed to examine the interaction between the generated longitudinal acoustic waves and the injected fluid from the side wallin slender chamber. This wave pattern me chanismmay lead to an intense unsteady vorticity with associated shear stresses in real rocket chamber. Themass injection and the generated end-wall disturbancemay mimic the unsteady burning processes atresonance and non-resonance frequencies. The analytical approach is formulated using asymptotic technique to reduce the full governing equations. The results show that unexpectedly large amplitude of unsteady vorticity are generated at the injection sidewall of the chamber and penetrated downstreamby the bulk motion of the internal flow. These stressesmay cause scouring effect and large transient heat transfer on the combustion surface. A comparisonbetween the three adapted approaches is presented..

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Acoustic Waves, Solid Rocket Motor Chamber, Sidewall Injection, and Perturbation Analysis.