Multi-dimensional and transient flows play a key role in many areas of science, engineering, and health sciences but are often not well understood. The complex nature of these flows may be studied using particle image velocimetry (PIV), a laser-based imaging technique for optically accessible flows. Though many forms of PIV exist that extend the technique beyond the original planar two-componen...

This paper presents simplified hydrodynamics model for a biomimetic robot fish based on quantitative morphological and kinematic parameters of crangiform fish. The motion of four Pangasius sanitwongsei with different length and swimming speed were recorded by the digital particle image velocimetry (DPIV) and image processing methods and optimal coefficients of the motion equations and appropria...

in this study digital image correlation (dic) technique combined with a high speed video system was used to predict movement of particles in a water model. comparing with particle-image velocimetry (piv) technique, it provides a low cost alternative approach to visualize flow fields and was successfully employed to predict the movement of particles in a water model at different submergence dept...

this paper presents simplified hydrodynamics model for a biomimetic robot fish based on quantitative morphological and kinematic parameters of crangiform fish. the motion of four pangasius sanitwongsei with different length and swimming speed were recorded by the digital particle image velocimetry (dpiv) and image processing methods and optimal coefficients of the motion equations and appropria...

3D visualization of fluid flow is of critical significance to a number of applications ranging from micro-scale medical devices to design of ships and airplanes. Of the various techniques currently used to visualize flow fields, particle image velocimetry (PIV) offers great advantages because of the high resolution quantitative results it provides. The feasibility of using synthetic aperture (S...

A particle-shadow-velocimetry (PSV) technique that employs light sources with significantly lower power than lasers is introduced as a variant of particle-image velocimetry (PIV). The PSV technique uses a non-scattering approach that relies on direct in-line illumination by a pulsed source such as a light-emitting diode (LED) onto the camera imaging system. Narrow-depth-of-field optical setups ...

A performance evaluation was presented of interpolations necessary for the window deformation in particle image velocimetry (PIV). As a deformation scheme for the window, the linear transformation was applied. Several interpolation schemes were tested which were usually used in image processing: linear, quadratic, B-spline, cubic, Mitchell & Netravali’s, sinc, Lagrange, and Gaussian interpolati...