Three-dimensional measurement of asymmetric flow field in hypersonic shock tunnel with moire interferometry

1992 ◽  
Author(s):  
Anzhi He ◽  
Dapeng Yan ◽  
Hai-Ling Wang ◽  
Zu Q. Yang
Keyword(s):  
Flow Field ◽  
Three Dimensional ◽  
Moiré Interferometry ◽  
Shock Tunnel ◽  
Moire Interferometry ◽  
Asymmetric Flow ◽  
Dimensional Measurement ◽  
Three Dimensional Measurement ◽  
Hypersonic Shock ◽  
Hypersonic Shock Tunnel

Measurement of 3D Flow Structure of Viscoelastic Fluid Using Digital Holographic Microscope

2015 ◽  
Author(s):  
Xiao-Bin Li ◽  
Masamichi Oishi ◽  
Tsukasa Matsuo ◽  
Marie Oshima ◽  
Feng-Chen Li ◽  
...  
Keyword(s):  
Flow Field ◽  
Real Time ◽  
Viscoelastic Fluid ◽  
Three Dimensional ◽  
Complex Flow ◽  
Micro Particle Image Velocimetry ◽  
Dimensional Measurement ◽  
Tracer Particles ◽  
Three Dimensional Measurement ◽  
Measured Flow

This paper aims to develop a three-dimensional measurement approach to investigate the flow structures of viscoelastic fluid in the curved microchannel by using digital holographic microscope (DHM). With the advantage of DHM, the real-time three-dimensional measurement for the complex flow field can be accomplished. The measurment system uses off-axis holographic / interferometric optical setup for the target, and 3D3C particle tracking velocimetry (PTV) can be achieved based on the analysis of phase information of holograms. To diagnose the chaotic flow inside the microchannel, the 3D temporal positions of tracer particles in the volume of 282μm × 282μm × 60μm have been detected and real-time velocity vectors were calculated based on the PTV algorithm. The measured flow field was then compared with the results obtained by using confocal micro particle image velocimetry (PIV). This technique is proven to be successful for the measurements of microfluidic flow, especially for the truly real-time 3D motions.

Three-Dimensional Measurement of the Hydrocyclone Flow Field Using V3V

2014 ◽  
Vol 595 ◽  
pp. 209-214
Author(s):  
Jian Gang Wang ◽  
Hua Lin Wang ◽  
Xu Duan
Keyword(s):  
Flow Field ◽  
Radial Velocity ◽  
Three Dimensional ◽  
Huge Amount ◽  
Matching Method ◽  
Dimensional Measurement ◽  
Index Matching ◽  
Two Component ◽  
Three Dimensional Measurement ◽  
Refractive Index Matching

The three dimensional three component (3D3C) flow field inside hydrocyclone was investigated using Volumetric 3-component Velocimetry (V3V). To improve the spatial resolution of the measurement, a refractive index matching method is used in the experiment. The three components of the velocity in the hydrocyclonic flow is measured, and the measurement produced huge amount of data, which enabled detailed analysis of the hydrocyclonic flow field. The tangential and axial is quasi-symmetric while the radial velocity is non-axisymmetric. The radial velocity is one order smaller in value than the other two component. Results show V3V with index matching is a robust method to the measurement of hydrocyclone flow field.

Experimental Study at Hypersonic Shock Tunnel of A 3D Prototyped Scramjet Powered with Hydrogen

2020 ◽  
Author(s):  
Ronaldo Cardoso ◽  
Paulo Toro ◽  
Israel Rêgo ◽  
Thiago Victor Cordeiro Marcos ◽  
Pedro Souza
Keyword(s):  
Experimental Study ◽  
Shock Tunnel ◽  
Hypersonic Shock ◽  
Hypersonic Shock Tunnel
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