螺旋桨搅拌槽内湍流运动测量及数据处理

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］，...

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

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.