摘要
横流条件下水平浮射流的运动轨迹线为三维、扭曲的曲线,通过设计一种可确定射流轨迹空间坐标的三维图像测量技术,实现了横流条件下水平浮射流的三维运动轨迹测量。实验结果表明,受横流的作用,三维轨迹线在水平面上的投影轨迹线显示了与横流中水平动量射流轨迹线相近的特性,受浮力的作用,在铅垂面上的投影轨迹线在垂向随着距孔口距离的增大逐渐呈线性抬升的趋势。
The trajectory of a horizontal buoyant jet in cross flow is a three-dimensional and skewed curve. In order to measure the curve, a three-dimensional flow visualization system, which can determine the spatial coordinates of a horizontal buoyant jet trajectory, was designed. The test results show that the horizontal projection trajectory of the three- dimensional trajectory is similar to the trajectory of a momentum jet because of the cross flow. Due to the influence of the buoyancy force, the xOz plane projection trajectory of the three-dimensional trajectory is an increasing curve.
出处
《水利水电科技进展》
CSCD
北大核心
2013年第3期1-4,22,共5页
Advances in Science and Technology of Water Resources
基金
国家杰出青年科学基金(51125034)
国家自然科学基金(51179055)
国家重大科学仪器设备开发专项(2011YQ07005502)
关键词
横流
水平浮射流
射流轨道线
三维图像测量技术
cross flow
horizontal buoyant jet
jet trajectory
three-dimensional flow visualization system
