Ignition of fuel sprays by shock wave mathematical modeling and numerical simulation |
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| Institution: | 1. Moscow M.V. Lomonosov State University, Leninskie Gory 1, Moscow 119992, Russia;2. Scientific Research Institute for System Analysis of the Russian Academy of Sciences, Moscow 117218, Russia;1. Moscow M.V. Lomonosov State University, Moscow 119992, Russia;2. Scientific Research Institute for System Studies of Russian Academy of Sciences, Moscow 117218, Russia;3. School of Aerospace and Mechanical Engineering Korea Aerospace University, Goyang-city 411-791, Republic of Korea;1. University of Michigan-Shanghai Jiao Tong University Joint Institute, Shanghai Jiao Tong University, Shanghai 200240, China;2. Department of Chemical and Materials Engineering, The University of Alabama in Huntsville, Huntsville, AL 35899, United States;1. Moscow Lomonosov State University, Moscow 119992, Russia;2. Scientific Research Institute for System Analysis of Russian Academy of Sciences, Moscow 117218, Russia;3. Lykov’s Heat and Mass Transfer Institute of National Academy of Science of Belarus, P.Brovki 15, Minsk, Belarus;4. LLC “Center for Numerical Modeling”, Zelenograd 124482, Moscow, Russia;1. Federal Science Center Scientific Research Institute for System Analysis of Russian Academy of Sciences, 36-1, Nakhimovskiy pr., Moscow, Russia, 117218;2. Moscow M.V. Lomonosov State University, GSP-1, Leninskie Gory, Moscow, Russia, 119991 |
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| Abstract: | The paper presents the results of developing of physical and mathematical model making it possible to take into account the effect of droplets non-uniformity in space and size distribution on ignition conditions for fuel sprays. The influence of condensed phase volume fraction on ignition and combustion of sprays was studied, physical and mathematical models for multi-phase flows, mixture formation and combustion of liquid fuels based on solving Navier–Stokes equations for gas phase accounting for thermal and mechanical interaction with poly-dispersed droplets array. The problems of particulate phase dynamics are regarded accounting for the interaction with gas phase atomization, evaporation and combustion.It was shown that depending on droplet size distribution and aerosol cloud density different flow scenarios were possible.Several ignition zones could be formed behind incident shock wave depending on mixture properties and initiation parameters. The possibility of numerical simulation permitting variation of definite parameters only made it possible to explain this fact. |
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