激光测速技术及其在化工搅拌流场测量中的应用

Development of Laser Doppler Measurement Techniques and its Application in Measuring Flow Fields in Stirred Vessels

介绍了激光测速技术基本原理 ,比较分析LDA、PDPA、PIV 3种代表性激光测速技术的技术进展和应用范围 ,针对它们在化工搅拌流场测量应用进行了综述 ,并介绍了激光测速技术在搅拌系统计算流体力学(CFD)模拟中的应用。激光测速技术与CFD的结合将是未来搅拌系统优化与设计的必然趋势。

Based on Doppler Frequency-Shift Effect,three typical techniques as LDA,PDPA,PIV are reviewed and their applications in measuring flow fields in stirred vessels with one or multistage impellers are summarized.Validation of CFD(computational fluid dynamics) using LDA,PDPA,PIV data is also discussed and illustrated.Laser Doppler measurement techniques combining with CFD will be the powerful tools in optimization and design of stirred vessels in the future.