Particle image velocimetry (PIV) is a non-intrusive optical flow measurement technique used to study fluid flow patterns and velocities. PIV has found widespread applications in various fields of science and engineering, including aerodynamics, combustion, oceanography, and biofluids.

粒子图像测速 （PIV）技术是一种瞬态、多点、无接触式的 流体力学 测速方法。 在流场中散播一些跟踪性与反光性良好的示踪粒子；用激光片光照射到所测流场的切面区域；通过成像记录系统连续摄取两次或多次曝光的粒子图像；再利用 图像互关方法 分析所拍摄的PIV图像，获得每一小区域中粒子图像的平均位移，由此确定流场切面上整个区域的二维流体速度分布。 PIV技术特点. 1、非接触式测量. 一般的流场测量设备要求把测量传感器一起放入流场中，这样势必要对流场产生 …

The research interests cover the development of particle image velocimetry (PIV) and its applications to high-speed aerodynamics in the supersonic and hypersonic regime. Notable developments are the image deformation technique, Tomographic PIV for 3D ow velocity measurements and its use to Preface XI quantitatively determine pressure uctuations ...

Particle image velocimetry (PIV) is an experimental tool in fluid mechanics and aerodynamics. The basic principle involves photographic recording of the motion of microscopic particles that follow the fluid or gas flow.

Particle image velocimetry (PIV) is well known as a powerful measurement tool in fluid engineering for its obvious advantages: non-intrusive, instantaneous, whole-field simultaneous measurement and easy extraction of flow properties.

Dec 17, 2024 · PIVlab - particle image velocimetry (PIV) tool with GUI Version 3.08 (45.7 MB) by William Thielicke Easy to use, GUI based tool to capture, analyze, validate, postprocess, visualize and simulate PIV data.

Dec 1, 2020 · In this work, we provide a detailed review of particle image velocimetry (PIV) for velocity measurements in flows. We focus on the planar version of PIV because it is of most interest, to our knowledge. The manuscript covers the historical development of PIV as well as the newest findings.

Jan 1, 2007 · When we track and understand fluid mechanics, Particle Image Velocimetry (PIV) provides a non-invasive measurement of the fluid velocity field as an important experimental technique [1].

Particle Image Velocimetry (PIV): Instantaneous measurement of 2 components in a plane particle image velocimetry • whole-field method • non-intrusive (seeding • instantaneous flow field instantaneous vorticity field

Particle Image Velocimetry (PIV) is a non-intrusive optical measurement technique which allows capturing several thousand velocity vectors within large flow fields instantaneously. Today, the PIV technique has spread widely and differentiated into many distinct applications, from micro flows over combustion to supersonic flows for both ...