【摘要】 针对纺织车间中清洁风机气动性能不足的问题，采用数值模拟与试验结合的方法对其进行研究。以静压、风量和效率为主要参数，采取分组优化的方式分别对叶片叶形和进出口安装角进行设计，并通过数值计算对各方案风机的气动性能及其流场进行分析。结果表明：Bezier函数拟合的新叶形，叶片流道面积增加9.4%，迎风面曲率和宽度的加大，使得叶道内流场分布优于原叶片，压力分布更趋平滑，对静压提升效果最明显，相比原风机增幅为10.9%；以降低流力损失为目标，通过粒子群寻优法知，进出口角的适当改变对风量、效率的提升效果最明显，相比原风机增幅分别为7.2%,5.1%。结合两组方案的最优解，确定最终风机模型。优化后风机的静压提高12.9%，风量提高8.1%，效率提高7.2%，大于分组设计中各方案单一优化的结果，符合实际生产需求。分组优化可以避免各动静部件之间的协同干涉作用，最大限度的提升风机性能。更多还原

【Abstract】 For the problem of insufficient aerodynamic performance of cleaning fans in textile workshops,a combination of numerical simulation and experiments was used to study it. With static pressure,air volume and efficiency as the main parameters,the blade profile and inlet and outlet installation angles were designed separately by group optimization,and the aerodynamic performance of the fans and their flow fields were analyzed by numerical calculation for each scheme. The results show that for the new blade profile fitted by Bezier function,the blade runner area is increased by 9.4%,the increase of the curvature of the windward side and the width makes the distribution of the flow field in the blade channel better than the original blade,and the pressure distribution smoother,the effect on the static pressure increase is most obvious,an increase of 10.9% compared with the original fan;With reduction of flow loss as the goal,through the particle swarm optimization method,it is known that the appropriate change in the inlet and outlet angle has the most obvious effect on increase of the air volume and the efficiency. the increase is 7.2%and 5.1% respectively compared with the original fan. The final fan model was determined by combining the optimal solutions of the two groups of solutions. After optimization,the static pressure of the fan is increased by 12.9%,the air volume is increased by 8.1%,and the efficiency is increased by 7.2%,which are greater than the results of single optimization of each scheme in the group design and meet the actual production requirements. The grouping optimization can avoid the synergistic interference effect between the rotating and stationary components and maximize the performance of the fan.更多还原