Abstract
Cavitation in the flow passages of plain orifice injector affects both internal flow and jet characteristics. Cavitation occurs in flow passages of liquid engine injectors when static pressure falls below the vapor pressure at that temperature. Injector elements having narrow flow passages are more susceptible to cavitation. The flow rate through the injector is reduced significantly due to cavitation when bubbles partially block the flow. It is important to understand cavitation phenomena occurring inside the injector flow passage as it can lead to fluctuation in propellant flow rate to the combustion chamber. Cavitation structures inside the flow path of the injector are obtained by numerical simulations. The numerical results show agreement within validation uncertainty against the previously observed experimental data.
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Acknowledgements
The authors would like to express their deepest thanks to Liquid Propulsion Systems Centre and College of Engineering Trivandrum for providing the facilities and guidance during the course of the work.
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Nair, V.S., Kumar, V., Tharakan, T.J., Suryan, A. (2021). Comparison of Flow Features Inside a Plain Orifice Injector for Different Length-to-Diameter Ratios. In: Venkatakrishnan, L., Majumdar, S., Subramanian, G., Bhat, G.S., Dasgupta, R., Arakeri, J. (eds) Proceedings of 16th Asian Congress of Fluid Mechanics. Lecture Notes in Mechanical Engineering. Springer, Singapore. https://doi.org/10.1007/978-981-15-5183-3_5
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DOI: https://doi.org/10.1007/978-981-15-5183-3_5
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