【摘要】 采用计算流体软件Fluent数值模拟的方法,通过对双层气雾化喷嘴气流场、颗粒粒径以及温度场的数值模拟,研究分析了导液管突出高度对气流场、颗粒粒径以及温度场的影响.研究结果表明,模拟结构中导液管突出高度为6mm时气流场结构最优,雾化所得粒径最小.此外,论文总结了气雾化过程中液滴在特殊气流场中破碎的主要过程,为双层气雾化喷嘴结构设计及机理研究提供了理论依据.更多还原

【Abstract】 The effect of feeding tube height on flow field and temperature structure and particles size is simulated based on Computational Fluid Dynamic Software Fluent.According to our simulation results,feeding tube height 6 mm is the optimal value,then flow field structure is best and the particles size is lest.We also summarized particles breakup process in atomization based on the results.It is helpful to double-layer atomizer’s design and mechanism research.更多还原