摘要
冷喷涂相比于传统热喷涂技术有许多优势,能够制备传统喷涂技术难以制成的材料涂层,能更好地适应工作环境,使加工过程方便快捷,从而提高工作效率.本文以冷喷涂设备小型化为研究背景,首先在理论上对拉瓦尔喷管原理进行分析,建立喷管截面积变化与各流动性能参数间的关系,根据理论推导得出拉瓦尔喷管截面积与出口处流体速度等流动性能参数的关系,最后通过计算机模拟了各参数下拉瓦尔喷管的工作状态.
Compared with traditional thermal spraying technology,cold spraying has many advantages.It can prepare material coatings that are difficult to be made by traditional spraying technology,better adapt to the working environment,make the processing process convenient and fast,and improve the work efficiency.Taking the miniaturization of cold spraying equipment as the research background,this paper first analyzes the principle of Laval nozzle in theory,establishes the relationship between the change of nozzle cross-sectional area and various flow performance parameters,deduces the relationship between Laval nozzle cross-sectional area and flow performance parameters such as fluid velocity at the outlet according to the theory,and finally simulates the working state of Laval nozzle under various parameters by computer.
作者
范晓星
王宇
王曦珠
张硕
FAN Xiao-xing;WANG Yu;WANG Xi-zhu;ZHANG Shuo(School of Physics,Liaoning University,Shenyang 110036,China)
出处
《辽宁大学学报(自然科学版)》
CAS
2023年第2期146-153,共8页
Journal of Liaoning University:Natural Sciences Edition