... work investigates the wake dynamics generated by sets of complex turning vanes which contained nonaxisymmetric geometries, spanwise variations in turning angle, and multiple vane junctions. Time-resolved particle image velocimetry (TR-PIV) measurements were performed to collect three-component velocity...

...) is measured in detail. Dual-orthogonal-plane particle image velocimetry (PIV) is employed to extract high-resolution flow information in two orthogonal planes. Two separate measurements are first made to see the three-dimensional time-mean flow dynamics and the statistical quantities in the two planes...

... production level were detected in the trailing edge of the blades. These are examples showing that significant attention was devoted to investigating the internal flow in pumps, over the last decades [ 15 – 18 ]. The particle image velocimetry (PIV) technique is nonintrusive, i.e., it does not disturb...

...Benjamin Segun Oluwadare; Shuisheng He An investigation of flow acceleration from initial statistically steady turbulent flow to final statistically steady turbulent flow is conducted experimentally using particle image velocimetry (PIV) and constant temperature anemometry (CTA). The turbulence...

.... Linear combination of POD vorticity modes is used for the qualitative visualization of coherent structures. The vorticity fields are computed from the instantaneous two-dimensional velocity fields measured using a combined particle image velocimetry and laser-induced fluorescence technique (PIV-LIF...

... the Navier–Stokes equations to demonstrate gliding performance over a range of angles of attack at low Reynolds numbers. The numerical model was validated against experimental data obtained from a fabricated corrugated wing model using particle image velocimetry. The numerical results demonstrate that bio...

... valve Tesla diode pressure velocity diodicity pressure transducer particle image velocimetry The Tesla diode was developed and patented by Nikola Tesla in 1920 [ 1 ]. He described it as a rough concept and leaves the optimization of the geometry open. The first analyses of the performance...

... set of particle image velocimetry experiments have been carried out. Within a pulsatile cycle, an increase in inclination (0–90 deg) is seen to shift the point of impingement from the distal end toward the aneurysmal apex. This change in flow pattern strengthens helicity, drifts vortex cores, enhances...

...Tianshu Liu; David M. Salazar; Hassan Fagehi; Hassan Ghazwani; Javier Montefort; Parviz Merati A hybrid method for particle image velocimetry (PIV) is developed to overcome the limitations of the optical flow method applied to PIV images with large displacements. The main elements of the hybrid...

... carried out at a flow rate above optimal value (slight overload) and at 3% head drop conditions. In this operating point there was no cavitation present in the impeller of the pump, hence, the whole 3% head drop resulted from cavitation on the tongue of the volute. By use of particle image velocimetry...

... acceleration parameter was varied from 0.38 × 10 − 6 to 3.93 × 10 − 6 while the Reynolds number based on the boundary layer momentum thickness was varied from 290 to 2250. The velocity measurements were made using a particle image velocimetry technique. From these measurements, the distributions of the mean...

..., in a single downward oriented discharging branch, was presented. Particle image velocimetry was used to measure the liquid side flow field in horizontal and vertical planes. Averaged velocity profiles were presented and demonstrated a highly radial flow. The particle image velocimetry data were validated...

... are described and shown to be fundamentally different from the well-known phenomenon of vortex shedding from solid bluff bodies. 28 08 2005 14 10 2006 jets turbulence flow visualisation laser velocimetry pipe flow wakes vortices wind tunnel experiments particle image velocimetry...

... are alternately compressed and expanded. During compression, fluid is forced from one chamber to the other through the septum holes, creating an array of jets that drive the mixing process. Flow characterization within the mixer was conducted using particle image velocimetry. Tests were performed for Reynolds...

.... The experiments were carried out in a square cavity with a periodically driven lid, and planar velocity measurements were obtained using particle image velocimetry. The flow was driven by moving the top surface of the cavity in a simple harmonic motion. The aspect ratio, defined as the ratio of cavity length...