喷气织机主喷嘴气流三维数值模拟与分析

Numerical Simulation and Analysis of Air Flow within Main Nozzle in Air-jet Loom

利用计算流体力学CFD软件对主喷嘴内部气流进行了三维数值模拟,获得喷气织机主喷嘴内部气流压力、流速、马赫数等流场特性的分布曲线,并就流场的轴向径向气流速度模拟结果进行了详细的分析评价。模拟结果验证了计算模型的可行性和有效性,对于进一步了解实际系统流场特性并提高喷气织机气流性能具有重要意义。在一定程度上为主喷嘴内部流场分析和结构设计奠定了基础,为主喷嘴结构设计缩短研制周期,提高效率,节约成本提供了参考依据,是喷气织机气流引纬技术研究的一个重要发展方向。

The 3-D numerical simulation of the air flow within the main nozzle was performed with the computational fluid dynamics （CFD） software, and the distribution curves of flow field characteristics of pressure, velocity and Mach number of air flow within the main nozzle of air-jet loom were obtained. A detailed analysis and evaluation about the simulation results of the radial and axial air velocity in the flow field are carried out. The simulation results verified the feasibility and effectiveness of the method, which may have important significance in further understanding of practical flow field characteristics, improve the flow field performance of air-jet loom, and lay a foundation for the flow field analysis and structure design of main nozzle to some extent. The method can shorten the development cycle for main nozzle. It is a development direction of pneumatic weft insertion tchnology of air-jet loom.