明渠弯道温差异重流特性研究初探

Preliminary experimental investigation on the properties of the thermal density flow in open channel bend

本文应用二维激光测速系统，红外热像仪和多通道测温系统对明渠弯道温差异重流的特性进行了实验研究，发现了异重流弯道二次流有三环主体结构，为明渠弯道传热、传质数学模式奠定了物理机制的基础。

By using a LDA the authors carfully measured the velocity distribution in the cross sections of thermal density flow along an 180°open channel bend in laboratory. A three lells pattern of the secondary flow was discovered and the cause of its existence was inveshgated.