10503 自動車用燃料噴霧装置におけるマルチスケール噴霧解析(産学における混相研究(1),OS.13 産学における混相研究)

概要

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The fuel spray of automobile engine includes multi-scale free surfaces; a liquid film forms at the fuel injector outlet, and then the liquid film breaks up into droplets. To simulate multi-scale free surfaces, we combined a particle method and a Cartesian grid method. The liquid film breakup near the injector outlet was simulated using the particle method, and the air/fuel mixture after the liquid film breakup was simulated using the Cartesian grid method. Distributions of droplet diameters and velocities, calculated in liquid-film breakup simulation, were used as an initial condition of spray for the Cartesian grid method. We applied our new method to simulate a collision fuel injector. The simulation results were compared with the measurements. The liquid film breakup near the injector outlet and the behavior of the air/fuel mixture qualitatively agreed with the measurements.
一般社団法人日本機械学会の論文
2009-03-05