摘要
空化水射流技术是将空化作用引入到高压水射流而形成的一种新型高压水射流技术，在同等条件下，空化射流相对于普通高压水射流具有破碎和切割能力更高的特点。通过数值模拟和实验方法对空化技术进行研究，进行了喷嘴流场的数值模拟计算，设计了空化射流实验装置及空化喷嘴。以生锈铁板为研究对象，分别进行了喷嘴型号、打击时间、入口压力、靶距和扩散段长度的空化射流打击效果对比实验，研究了空化参数对空化效果的影响。实验结果表明角形喷嘴进行淹没射流的空化效果较好，空化射流除锈具有最优打击时间。不同的入口压力对应不同的最佳靶距。
Cavitation jet flow technology is a new high pressure water jet technology which introduces cavitation action into high pressure water jet. Under the same condition, cavitation jet flow has a better cracking and cutting ability than the common high pressure water jet flow. In this paper, the authors use numerical simulation and experiment methods to study the cavitation technology. The flowing field of nozzle is simulated. The cavitation jet flow experiment equipment and cavitation nozzle are designed. Using rust iron plate as the study object,the contrasting experiments of cavitation jet hit effect on the nozzle model, hitting time, inlet pressure, target distance and divergence zone length are carried out respectively, and the relationship between cavitation parameter and cavitation result is confirmed. The experiment results show that angle nozzle has preferable cavitation effect during submerged jet, cavitation jet descaling has the optimum hitting time, and different inlet pressure has different optimum target distances.
出处
《后勤工程学院学报》
2009年第1期40-44,共5页
Journal of Logistical Engineering University
关键词
空化
射流
实验
cavitation
jet flow
experiment
