... creating a blockage ratio of approximately 20%. Data is acquired using a Particle Image Velocimetry (PIV) system. Image pairs are processed to create two-dimensional velocity fields that are further processed to better understand the flow behaviour. Influence of the spray injection on the mean velocity...

... PIV optical measurement Proceedings of the ASME 2024 Fluids Engineering Division Summer Meeting FEDSM2024 July 15-17, 2024, Anaheim, California FEDSM2024-130889 Dynamic Behavior of Two-pairs of Vortices Rolled up from Elastic Butterfly Wings Sei Haishi, Masaki Fuchiwaki Kyushu Institute...

..., but there is no reattachment in the AR1. One-dimensional profiles are used to quantitatively assess the differences in the flow characteristics. It is observed that the magnitudes of Reynolds stresses in the near wake region are an order higher in the AR1 case than in the AR4 case. Keywords: flow separation, PIV, uniform flow...

... obstacle (20x10mm²) then a squared obstacle (10x10mm²) were placed in order to study experimentally and numerically the vortex shedding and their interactions in the flow. Upstream obstacles, the studied flows are laminar. In our experimental study, the PIV technique was used in order to obtain...

... of the destruction of the shear-induced vortex dynamics that causes flow stagnation on the rear cavity wall. Our results also indicate the superhydrophobic coating is potentially beneficial in terms of reducing the hemodynamic loading inside the cavity. PIV pulsatile flow cavity flow diverter...

... Abstract The study is an experimental investigations using PIV. The measurements were obtained by PIV for an unsteady laminar flow across a rectangular channel with a cross-section 300 × 30mm 2 , in the middle of which is located a cylindrical or a square obstacle. In the case...

... according to the operating frequency. PZT (lead zirconate titanate) hydraulic pump visualization PIV EXPERIMENTAL STUDY ON SMALL HYDRAULIC PUMP USING VISUALIZATION TECHNIQUE Jangmi Woo, Yeonghyeon Gim, Dong Kee Sohn1, Han Seo Ko School of Mechanical Engineering Sungkyunkwan University, Suwon...

... different shaped main nozzles were used. The analysis of spray characteristics was done by using particle image velocimetry (PIV) system and phase Doppler anemometry (PDA) system. Spray cone angle, Sauter mean diameter (SMD) distribution and weighted mean SMD (WMSMD) were analyzed. In the case of the effect...

... heart rates (50 bpm, 75 bpm and 100 bpm). The stenotic valve was constructed by molding silicone into three-leaflet aortic valve geometries wrapping around thin fabrics which increases its stiffness and tensile strength. Two-dimensional phase-locked particle image velocimetry (PIV) was employed...

.... Specifically tailored for PIV data, they present an important topic in modern experimental fluid mechanics. In fact, the performance of the method is related to its effectiveness in the velocity data analysis and to successfully detect and locate the vortices as well as calculate the characteristic vortex...

... experiments using particle image velocimetry (PIV) have been made, as well as global flow rate and pressure measurements in the curved duct. A three-dimensional model of a curved duct with 25 outlet nozzles has been studied for duct Reynolds number up to 100,000. Different geometrical configurations...

... with large blade outlet angle. KEYWORDS: Chemical Pump, Blade outlet angle, PIV, Velocity distribution INTRODUCTION Crystallization is a process that crystal particles precipitated from supersaturating solution mainly composing of natrium and kalium ion. The feature of this phenomenon is that there are lots...

... results obtained by averaging the head and the efficiency over the last computed impeller revolution. In addition the numerical obtained flow field upstream of the inlet nozzle is compared to flow fields measured in Braunschweig by PIV method. Also the flow field is shown in regions of the pump which...

...NUMERICAL SIMULATION OF INNER FLOW IN A DOUBLE BLADES PUMP BASED ON OPENFOAM AND ITS PIV VERIFICATION Yun Ren Research Center of Fluid Machinery Engineering and Technology, Jiangsu University Zhenjiang, Jiangsu, China renyun_ry@hotmail.com Houlin Liu Research Center of Fluid Machinery Engineering...

... was designed and manufactured, its vane had a logarithmic spiral and its shroud had a parabola form. Computational fluid dynamics (CFD) demonstrated that the streamlines in the impeller were coincided with the vane and shroud; particle image velocimetry (PIV) exhibited also that the streamlines in vane channel...

... reservoir. Particle Image Velocity (PIV) is used to observe a secondary flow pattern and pressure transducer is used for investigating the onset and development of rotating stall inside vaneless diffuser. The reverse flow zone observes near hub wall of impeller exit at relatively low flow rate. This reverse...

... not occur through the traditional route as observed in circular cylinder flows. It is found that mode-C instability with a spanwise spacing of 2.4D dominates the near wake development. Wake instabilities Wake transition PLIF PIV POD 1 Copyright © 2010 ASME Proceedings of the ASME 2010 3rd...

...~1, m3/min, m) or I .72 (non- dimensional) by using a commercial CFD code and a dynamic PIV (DPIV) measurement. This pump has two positive slopes of a head-flow characteristic at the flow rates of about 60 % Q " pt and 82% Q*pt' In the authors' previous study, it was clarified that the characteristic...

... 30 07 2010 An experimental investigation was performed to study the structure of the flow field around finite circular and square cylinders in a water channel. Detailed velocity measurements using a particle image velocimetry (PIV) system and proper orthogonal decomposition (POD...

... were analysed using the particle image velocimetry (PIV) software. Three experimental conditions were studied, i.e. oscillating finned surface in a fluid at rest, steady finned flow and oscillating finned flow. CFD simulations were performed using the software suit CFX11 from ANSYS GmbH, Germany...