惯性粒子分离器流场特性的PIV试验研究

PIV Measurements of the Flow Field Characteristics in an Inertial Particle Separator

惯性粒子分离器因具有流动损失小、砂尘分离效果明显的特点而成为直升机发动机进气道的标准配置。论文采用PIV测速技术对惯性粒子分离器矩形截面模型进口、中心体驼峰区域、清除流(包括分叉区域)、主气流流场在高速进气状态下,进行分段测量,研究了该模型流道在设计型线下的流动特性;对比数值计算,显示出该流场的局部流动细节结构。进一步地验证了湍流模型数值计算方法可应用于惯性粒子分离器流道流场特性的研究。

The inertial particle separator is a standard component of a helicopter engine because of its small flow losses and good separation function for sand and dust.In this paper,PIV measurements were conducted to determine the flow characteristics in a model of an inertial particle separator in the rectangular section in the inlet,the area around the hump including the scavenge flow,frog and also main flow.Comparing the experiment results with numerical simulation results,it shows that numerical simulation with an appropriate turbulence model can a reliable tool to predict the flow field characteristics in the inertial particle separator.