Experimental study on impinging velocimetry of gel simulants based on PIV

被引：0

作者：

Chen, Jie ^{[1
]}

Feng, Feng ^{[1
]}

Ma, Hu ^{[1
]}

Wu, Xiao-Song ^{[1
]}

机构：

[1] School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China

来源：

Tuijin Jishu/Journal of Propulsion Technology | 2014年 / 35卷 / 04期

关键词：

Flow visualization - Gelation - Kinetics - Pressure drop - Atomization - Kinetic energy - Drops - Velocity measurement - Propellants - Velocimeters;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

In order to study the atomization of gelled propellant, the effects with different pressure drop and impinging angle on atomization of impinging injector with gelled propellant were studied by a Time-Resolved Particle Image Velocimetry (TR-PIV), in which the injection impinging angles were 45°, 60°, 75°, 90° and 120°, the pressures drop ranged from 0.4 MPa to 0.8 MPa. The experimental results indicate that the distribution of atomization velocity is symmetry by the impinging axis and has one peak. The further from the strike spot, the smaller the atomization velocity and more uniform.The effective impinging speed of gel propellant is improved by increasing impinging angle and pressure drop. That is because the liquid kinetic energy converted to the energy of liquid broken is enhanced, and the atomization quality is improved. Finally, the gel propellant prepared in laboratory can be fully atomized when the effective impinging velocity is above 27.9 m/s.

引用

页码：565 / 569