Three-Dimensional Flow Tracking in a Micro Channel with High Time Resolution Using Micro Digital-Holographic Particle-Tracking Velocimetry

2005 ◽  
Vol 12 (6) ◽  
pp. 442-444 ◽  
Author(s):  
Shin-ichi Satake ◽  
Tomoaki Kunugi ◽  
Kazuho Sato ◽  
Tomoyoshi Ito ◽  
Jun Taniguchi
Keyword(s):  
Particle Tracking ◽  
Time Resolution ◽  
Particle Tracking Velocimetry ◽  
Three Dimensional ◽  
High Time ◽  
High Time Resolution ◽  
Micro Channel ◽  
Three Dimensional Flow ◽  
Dimensional Flow

scholarly journals C112 Three-dimensional flow measurement in a micro channel with high time resolution using micro digital-holographic PTV

2005 ◽  
Vol 2005 (0) ◽  
pp. 95-96
Author(s):  
Shin-ichi Satake ◽  
Tomoaki Kunugi ◽  
Kazuho Sato ◽  
Tomoyoshi Ito ◽  
Jun Taniguchi ◽  
...  
Keyword(s):  
Time Resolution ◽  
Flow Measurement ◽  
Three Dimensional ◽  
High Time ◽  
High Time Resolution ◽  
Micro Channel ◽  
Three Dimensional Flow ◽  
Dimensional Flow

scholarly journals Three-Dimensional Measurements in Micro Flow with High-time Resolution via Digital Holography

2006 ◽  
Vol 72 (721) ◽  
pp. 2211-2218
Author(s):  
Shin-ichi SATAKE ◽  
Tomoaki KUNUGI ◽  
Kazuho SATO ◽  
Tomoyoshi ITO ◽  
Hiroyuki KANAMORI ◽  
...  
Keyword(s):  
Time Resolution ◽  
Digital Holography ◽  
Three Dimensional ◽  
High Time ◽  
High Time Resolution ◽  
Dimensional Measurements ◽  
Micro Flow

Measurements of Three-Dimensional Flow in Microchannel With Complex Shape by Micro-Digital-Holographic Particle-Tracking Velocimetry

2008 ◽  
Vol 130 (4) ◽  
Author(s):  
Shin-ichi Satake ◽  
Takafumi Anraku ◽  
Hiroyuki Kanamori ◽  
Tomoaki Kunugi ◽  
Kazuho Sato ◽  
...  
Keyword(s):  
Particle Tracking ◽  
Particle Tracking Velocimetry ◽  
Complex Shape ◽  
Three Dimensional ◽  
Fluid Flows ◽  
High Time Resolution ◽  
Convergence Region ◽  
Divergence Point ◽  
Depth Direction ◽  
Three Dimensional Vector Field

High time-resolution flow field measurement in two microchannels with a complex shape is performed by a micro-digital-holographic particle-tracking velocimetry (micro-DHPTV). The first microchannel has a Y junction that combines the flow of fluid from two inlets into one outlet. In this case, two laminar velocity profiles from the inlet regions merge into one laminar velocity profile. The second microchannel has a convergence region from where a fluid flows into a divergence region. At this region, two recirculation regions appear. Consequently, approximately 250 velocity vectors in both cases can be obtained instantaneously. For a microchannel with the convergence region, the two recirculation regions that appear at the divergence point are captured from a three-dimensional vector field, with which the axes of recircular vortices have some alignment. The reason why we can observe this phenomenon is that a three-dimensional velocity, including the depth direction, can be obtained by micro-DHPTV.

scholarly journals Three-dimensional structures and symmetry breaking in viscoelastic cross-channel flow

Soft Matter ◽  
2020 ◽  
Vol 16 (30) ◽  
pp. 6969-6974
Author(s):  
Boyang Qin ◽  
Ranjiangshang Ran ◽  
Paul F. Salipante ◽  
Steven D. Hudson ◽  
Paulo E. Arratia
Keyword(s):  
Symmetry Breaking ◽  
Flow Structure ◽  
Channel Flow ◽  
Particle Tracking ◽  
Three Dimensional ◽  
Three Dimensional Flow ◽  
Dimensional Flow ◽  
Viscoelastic Instability

Using holographic particle tracking, we report the three-dimensional flow structure organizing the viscoelastic instability in cross-channel flow.

Solar Corona Investigation by the Coronal Line Photometer at Lomnický Peak

1994 ◽  
Vol 144 ◽  
pp. 431-434
Author(s):  
M. Minarovjech ◽  
M. Rybanský
Keyword(s):  
Solar Corona ◽  
Time Resolution ◽  
Active Regions ◽  
High Time ◽  
High Time Resolution ◽  
List Type ◽  
Type Number ◽  
Coronal Line ◽  
Global Cycle

AbstractThis paper deals with a possibility to use the ground-based method of observation in order to solve basic problems connected with the solar corona research. Namely:1.heating of the solar corona2.course of the global cycle in the corona3.rotation of the solar corona and development of active regions.There is stressed a possibility of high-time resolution of the coronal line photometer at Lomnický Peak coronal station, and use of the latter to obtain crucial observations.

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