螺旋桨搅拌槽内湍流运动测量及数据处理

Measurement of Turbulence Parameters and Data Processing in Stirred Tank with an Axial Impeller

螺旋桨搅拌槽内湍流运动测量及数据处理侯拴弟，王英琛，施力田（北京化工大学化学工程系，北京１０００２９）关键词搅拌槽，湍流运动，螺旋桨１前言轴流式搅拌槽常用于物料混匀、结晶、悬浮及催化反应等过程，是化工生产中重要的单元设备之一。纵观以往文献［１～３］，...

The characteristics of turbulence flow in an stirred tank with an axial impeller have been investigated.The turbulent parameters,such as the velocity and energy spectrum,have been measured by one-dimension hot-film anemometer.In the vicinity of impeller,the fluctuating velocity has periodic component,which decreases sharply with increasing distance to the impeller tip. By using auto-corrected method,the measured fluctuation velocity were corrected.The methed of calculating energy speetrum was also discussed.