粒子图像测速技术在流体力学领域的应用探讨

Application of Particle Image Velocimetry in the Field of Fluid Dynamics

流体流动的改善问题一直是工程上和科研上重点研究方向,通过改变外部条件来减小流动能量损失的技术正在发展且日趋完善。然而,粒子图像测速(PIV)的出现使得分析角度发生转变。做为一种流场显示技术,PIV能够清晰准确地帮助人们获取流体流动的内部信息,并且具有非接触式,对流动无干扰等优点。文章简要介绍了PIV系统组成,阐述了在湍流理论的应用,并指出在管道流动应用上有着光明的前景。

The improvement of fluid flow has always been one of the most research important directions in engineering. Thetechnology of reducing flow energy loss by changing external conditions is developing and improving. However, the appearance ofparticle image velocimetry (PIV) changes the way of flow analysis. As a flow field visualization technology, PIV can obtain theinternal information of flow clearly and accurately, and has the advantages of non-contact, non・interference. In this paper, thecomposition of PIV system was introduced, and its application was expounded, it was pointed out that PIV would have goodapplication prospects in the pipeline flow.