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http://dx.doi.org/10.6108/KSPE.2013.17.1.009

Analytical Study on the Gas-Solid Suspension Flows through Sonic and Supersonic Nozzles  

Sun, JianGuo (안동대학교 기계공학과)
Rajesh, G. (계명대학교 기계자동차공학과)
Kim, Heuydong (안동대학교 기계공학과)
Publication Information
Journal of the Korean Society of Propulsion Engineers / v.17, no.1, 2013 , pp. 9-17 More about this Journal
Abstract
A considerable deal of work has been carried out to get an insight into the gas-solid suspension flows and to specify the particle motion and its influence on the gas flow field. In this paper an attempt is made to develop an analytical model to study the effect of nozzle inlet/exit pressure ratio, particle/gas loading and the particle diameter effect on gas-solid suspension flow. The effect of the particle/gas loading on the mass flow, Mach number, thrust coefficient and static pressure variation through the nozzle is analyzed. The results obtained show that the presence of particles seems to reduce the strength of the shock wave. It is also found that smaller the particle diameter is, bigger will be the velocity as bigger particle will have larger slip velocity. The suspension flow of smaller diameter particles has almost same trend as that of single phase flow with ideal gas as working fluid. Depending on the ambient pressure, the thrust coefficient is found to be higher for larger particle/gas loading or back pressure ratio.
Keywords
Gas-solid Flow; Flow Choking; Convergent-divergent Nozzle; Analytical Study;
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