内混式二相流喷嘴流量特性

Flow rate characteristics of internal-mixing twin-fluid atomizers

结合相关理论,以水、润滑油和十二烷基硫酸钠(SDS)溶液作为液体介质,详细研究了操作参数(气液比)和液体物性(粘度、表面张力)对一种典型的内混式二相流喷嘴流量特性的影响,通过对实验数据的分析得出了一些重要结论。随着液体介质粘度的增加,气液压力要随之增加,而表面张力的增加,气液压力基本上保持不变。根据大量的实验数据,回归出了内混式雾化喷嘴的液体流量系数的经验关联式。

According to correlative theories, water, lubricating oil and Sodium Lauryl Sulfate solutions were used to investigate the influence of operational parameters （gas / liquid ratio） and liquid properties （viscosity, surface tension） on flow rate characteristics of a typical internal-mixing twin-fluid atomizer. Some important conclusions were drawn by experimental data analysis. For example, with the increase of liquid viscosity, the gas pressure and the liquid pressure increase, however, with the increase of liquid surface tension, the pressures of which are basically kept unchanged. On the basis of the investigation, empirical formula of atomizer fluid flow rate was regressed from the analysis of a great deal of experimental data.