alexa Abstract | Modeling and Experimental Investigation of Injection Process in Micro motor Combustion Chamber of Liquid Fuel Missile

European Journal of Experimental Biology
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Abstract

Injection process and its modification in missile motor combustion chamber are one of the most important parameters in combustion process, stability of combustion and the value of propulsion that depend to some factors such as: the type of injector being used, injector arrangements in injector plate and the type of combustion chamber. Unbalanced and no uniform distribution of fuel and undesirable size and velocity of spray droplets which cause asymmetric spray and imperfect combustion that in critical state will cause fracture and explosion of combustion chamber [1].In this article, in order to exact investigation of injection in missile micrometer, initially some concepts including: injector, injector plate, jet break-up theory, atomization and atomized spray parameters are described. Then by designing and building of combustion chamber model, experimental and numerical injection parameters from viewpoint of macroscopically and microscopically are scrutinized. In this case, due to advantage and vast usage of centrifugal injectors and because of distribution and more desirable uniformly injection in circular injector plate which in previous researches are done, have been used. To validate the injection process and spray characteristics which are measured in Cold-Test and PDA laboratories, the results are compared with numerical modeling and previous researches.

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Author(s): M Najafi BElhami F Ommi V Faraj Pour

Keywords

Injection, Spray, Injector, Injector plate, Combustion chamber, liquid missile

 
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