摘要
在研究某型超音速火焰喷枪的基础上,为了进一步提高火焰流的品质,首先运用传统方法及特征线原理对Laval喷嘴型面进行优化设计,得到较优的结构参数;其次采用ANSYS Workbench软件,对优化前后的Laval喷嘴进行仿真分析;最后将优化后的Laval喷嘴安装在喷枪上进行喷涂试验。试验发现,优化后Laval喷嘴出口的火焰流轴向速度不均匀度降低了32.82%,喷涂时火焰流轴向速度超过当地音速近7倍,且比优化前速度提高了约340m/s,优化后的Laval喷嘴符合设计要求。
In order to further improve the quality of the flame flow,the Laval nozzle contour is optimized by using the traditional formula and the characteristic theory,and the better structural parameters are obtained on the basis of an in-depth study and discussion of a HVOF gun.And then the Laval nozzles pre-optimized and optimized are simulated and analyzed using the commercial software ANSYS Workbench.Finally,the Laval nozzle optimized is installed on the spray gun for spraying test.It is found that the axial velocity non-uniformity of the flame flow at the exit of the Laval nozzle optimized is reduced by 32.82%,and the flame velocity at the time of spraying exceeds nearly seven times the local sonic velocity and is about 340m/s as fast as the pre-optimized speed,which indicates that the Laval nozzle optimized conforms to the original design.
出处
《中原工学院学报》
CAS
2017年第4期13-18,共6页
Journal of Zhongyuan University of Technology
关键词
超音速火焰喷枪
Laval喷嘴
优化设计
仿真分析
high velocity oxygen fuel spray gun
Laval nozzle
optimization design
simulation analysis
