基于多部件耦合的空调器轴流风扇叶尖涡研究

• 作 者: 王军 王兴双 邱鑫 姚瑞锋
• 机 构: 华中科技大学能源与动力工程学院,
• 出 处: 工程热物理学报
• 发表日期: 2011年06期
• 关键词: 轴流风扇 叶尖涡 数值模拟 空调器

本文采用三维Navier-Stokes方程、k-ε方程湍流模型和SIMPLE算法,对基于多部件耦合的空调器轴流风扇叶尖涡的三维流动特性进行了数值分析。结果表明:叶尖涡发生于叶顶吸力面附近距离叶顶弦长28%左右的位置,沿着与叶轮旋向相反的圆周方向,向相邻叶片的压力面发展,并且在距离叶片叶顶弦长45.5%的位置开始耗散,最后消失在风扇出口导流罩边壁的压力面附近。

In this paper, three-dimensional Navier-Stokes equations, turbulence model of k-ε equations and SIMPLE algorithm are used to analyze the three-dimensional flow characteristics of the tip vortex of axial fan based on multi-component coupling. The results show that the tip vortex occurs near the suction surface of the blade tip about 28% of the blade tip chord length and develops along the circumferential direction opposite to the blade rotation direction toward the pressure surface of the adjacent blade. The 45.5% chord begins to dissipate and eventually disappears near the pressure face of the fan exit deflector wall.