南京航空航天大学学报（英文版）2021，Vol.38Issue(z1)：24-31,8.
叶片出口角对导叶型轴流旋流管分离性能的影响
Influence of Blade Outlet Angles on Separation Performance of Guide Vane Type Axial Flow Cyclone Tube
邢小龙 1蒲文灏 1杨宇1
作者信息
- 1. 南京航空航天大学能源与动力工程学院,南京 210016,中国
- 折叠
摘要
Abstract
The influences of the internal and external outlet angles on separation performance and flow field are compared and analyzed. Two arc functions are employed for controlling the internal and external angles. The separation process in the cyclone tube is calculated by using two-fluid model based on the Eulerian-Eulerian method. The results show that the structure with the internal outlet angle smaller than the external one is more beneficial to the separation performance. It is found that the small internal angle can help increase the swirl number,while the small external angle can help increase the friction coefficient. Several groups of numerical simulations are conducted for the air intake unit of the gas turbine in practice. When the internal outlet angle is 35° and the external outlet angle is 40°, the blade has sufficient cyclone strength and the separation rate of particles with diameters of 10—100 μm is between 70％—98％. The small blade angle is more conducive to the separation of fine particles,leading to violent collision of large particles on the outer wall and reduction of separation efficiency. In addition,reducing the external angle is conducive to the discharge of large particles.关键词
轴流/叶片参数/出口角/分离性能Key words
axial flow/blade parameters/outlet angles/separation performance分类
信息技术与安全科学引用本文复制引用
邢小龙,蒲文灏,杨宇..叶片出口角对导叶型轴流旋流管分离性能的影响[J].南京航空航天大学学报（英文版）,2021,38(z1):24-31,8.
