摘要
河工模型有同其它模型不同的特点 ,给流场的测量带来一定的困难 ,而 DPIV系统是一种适合于河工模型的快速的流场测量方法。本文根据河工模型流场测量的特点建立了一套DPIV系统 ,可以对近千平方米区域内的流体表面流场进行快速测量 ,并且根据河工模型中示踪粒子分布的特点 ,提出了 DPIV速度计算的改进算法 ,提高了速度计算的效率 ,达到了对河工模型流场的实时测量和记录的要求。
WT5”BZ]Because the physical model is different from other flow models in size, the velocity field measurement is rather difficult. DPIV (Digital Particle Image Velocimetry) system can be used to determine quickly the flow field of the physical model. In this paper, a DPIV system is developed according to measurement characteristics of the physical model, and used to swiftly measure the flow field surface with the area of one thousand squire meters. According to the particle distribution characteristics of the physical model, three improved methods of DPIV are proposed to increase the efficiency of the velocity calculation, and these methods can be applied to the instantaneous measurement and recording. [WT5HZ]
出处
《水动力学研究与进展（A辑）》
CSCD
北大核心
2001年第2期209-215,共7页
Chinese Journal of Hydrodynamics
基金
国家自然科学基金!资助项目 ( 597760 2 3)
