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横流中水平浮射流三维运动轨迹测量方法
  • ISSN号：1006-7647( 2009)05-0009-04
  • 期刊名称：水利水电科技进展
  • 时间：2013
  • 页码：1-22
  • 分类：TV132.1[水利工程—水力学及河流动力学]
  • 作者机构：[1]河海大学水文水资源与水利工程科学国家重点实验室,江苏南京210098, [2]河海大学水利水电学院,江苏南京210098
  • 相关基金：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）
  • 相关项目：水沙运动过程及模拟
作者： 肖洋|朱小连|李开杰|
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
中文摘要：

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。

英文摘要：

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.

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