Using Particle Image Velocimetry for Road Vehicle Tracking and Performance Monitoring

2011 ◽  
Author(s):  
Samuel Kucera ◽  
Jeremy Daily
Keyword(s):  
Particle Image Velocimetry ◽  
Performance Monitoring ◽  
Particle Image ◽  
Vehicle Tracking ◽  
Road Vehicle ◽  
Image Velocimetry ◽  
And Performance

Exit Flow Field and Performance of Axial Flow Fans

2005 ◽  
Vol 128 (2) ◽  
pp. 332-340 ◽  
Author(s):  
S. C. Yen ◽  
Frank K. T. Lin
Keyword(s):  
Particle Image Velocimetry ◽  
Flow Field ◽  
Particle Image ◽  
Axial Flow ◽  
Performance Parameters ◽  
Fan Performance ◽  
Image Velocimetry ◽  
Global Performance ◽  
And Performance ◽  
Stable Flow

Flow fields near the exit and the global performance parameters of the various types of axial flow fans are studied with Particle Image Velocimetry and a standard AMCA 210 flow bench. The fans used in this study included the shrouded, shroudless, and winglet-blade types. The velocity vectors, streamlines, vorticity contours, velocity distributions, and performances are presented and discussed. The flow patterns on the radial and axial planes show that a vortex always exists near the exit of the fans at various impeller angles. The experimental results demonstrate that the shrouded fan with winglets has the most stable flow field and the best fan performance.

scholarly journals Experimental Study of the Aerodynamic Interaction between Side-by-Side Propellers in eVTOL Airplane Mode through Stereoscopic Particle Image Velocimetry

Aerospace ◽  
2021 ◽  
Vol 8 (9) ◽  
pp. 239
Author(s):  
Alex Zanotti
Keyword(s):  
Particle Image Velocimetry ◽  
Urban Areas ◽  
Particle Image ◽  
Three Dimensional ◽  
Stereoscopic Particle Image Velocimetry ◽  
Aerodynamic Interaction ◽  
Image Velocimetry ◽  
Flow Features ◽  
Stereo Particle Image Velocimetry ◽  
And Performance

Side-by-side propellers characterise the architecture of most new electric aircraft (eVTOLs) designed in recent years for urban air mobility. The aerodynamic interaction between side-by-side propellers represents one of the key phenomena that characterise the flow field and performance of these novel aircraft configurations. The present article describes the main results of a wind tunnel campaign that aimed to investigate the flow features that characterise this aerodynamic interaction, with a particular application to cruise flight conditions in eVTOLs. With this aim, stereo particle image velocimetry (PIV) measurements were performed in the wake of two co-rotating propeller models in a side-by-side configuration. The three-dimensional flow surveys provided detailed insights into the flow physics of the interacting propellers, with a particular focus on the interactional effects on the trajectory of the tip vortices and the wake topology provided at two different advance ratios by reproducing a moderate and a fast cruise speed of eVTOLs in urban areas.

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