Visualization and characterization of quantum fluid flows

2020 ◽  
Author(s):  
Daniel P Lathrop
Keyword(s):  
Fluid Flows ◽  
Quantum Fluid

A Machine Learning Approach to Tracking and Characterizing Planar or Near Planar Fluid Flow

2020 ◽  
Vol 9 (3) ◽  
pp. 76-87 ◽  
Author(s):  
Mahendra Gooroochurn ◽  
David Kerr ◽  
Kaddour Bouazza-Marouf
Keyword(s):  
Fluid Flow ◽  
Fluid Flows ◽  
Learning Approach ◽  
Leakage Detection ◽  
Surface Irrigation ◽  
Test Rig ◽  
Time Operation ◽  
Machine Learning Approach ◽  
Real Time Operation

This paper presents a framework to segment planar or near-planar fluid flow and uses artificial neural networks to characterize fluid flow by determining the rate of flow and source of the fluid, which can be applied in various areas (e.g., characterizing fluid flow in surface irrigation from aerial pictures, in leakage detection, and in surgical robotics for characterizing blood flow over an operative site). For the latter, the outcome enables to assess bleeding severity and find the source of the bleeding. Based on its importance in assessing injuries and from a medical perspective in directing the course of surgery, fluid flow assessment is deemed to be a desirable addition to a surgical robot's capabilities. The results from tests on fluid flows generated from a test rig show that the proposed methods can contribute to an automated characterization of fluid flow, which in the presence of several fluid flow sources can be achieved by tracking the flows, determining the locations of the sources and their relative severities, with execution times suitable for real-time operation.

Experimental Droplet Formation of Magnetostrictive Inkjet Head to the Change of Driving Waveform

2011 ◽  
Vol 314-316 ◽  
pp. 2334-2337
Author(s):  
Jae Hyun Yoo ◽  
Young Woo Park ◽  
Kyung Hyun Yoon ◽  
Eun Ju Yoo
Keyword(s):  
Magnetic Field ◽  
Constant Magnetic Field ◽  
Fluid Flows ◽  
Droplet Formation ◽  
Experimental Characterization ◽  
Droplet Volume ◽  
Waveform Control ◽  
Different Types ◽  
Driving Waveform

This paper presents the experimental characterization of droplet formation in accordance with different types of driving waveform. The objective of the experiments is to generate sound droplets with a minimal volume depending on the types of driving waveform. For it, two types of driving waveform are used to investigate the droplet formation of the M-Jet: one is bipolar and another W-shaped. In the case of the bipolar waveform, ti lead to fluid flows from the liquid reservoir into the chamber in the M-Jet and th is time to impose a pulse under the constant magnetic field, resulting in the formation of the droplets. The droplet volume decreases as ti increases, and increases with further increase of ti. The threshold ti is equal to 500 s. The droplet volume decreases as th decreases, but the droplet formation was not successful at less than 550 s. In the case of the W-shaped waveform, maintains ti and th where is set from bipolar waveform, control the tr, where retracted MM keeps to control droplet volume. The tail becomes longer as tr increases. The droplet volume remains nearly constant as tr increases, but rapidly increases with further increase of tr. When the two driving waveform, the W-shaped driving waveform seems to be effective in reducing the droplet volume, and achieves the reduction of volume by 30 percent.

Existence and isoperimetric characterization of steady spherical vortex rings in a uniform flow in RN

2004 ◽  
Vol 134 (3) ◽  
pp. 449-476 ◽  
Author(s):  
Geoffrey R. Burton ◽  
Luca Preciso
Keyword(s):  
Type Inequality ◽  
Fluid Flows ◽  
Semilinear Elliptic Equation ◽  
Vortex Rings ◽  
Sobolev Type ◽  
Semilinear Elliptic ◽  
Stream Functions ◽  
Spherical Vortex ◽  
Sobolev Type Inequality

We study a boundary-value problem for a particular semilinear elliptic equation on Rn (n ≥ 2), whose solutions represent generalized stream functions for steady axisymmetric ideal fluid flows. Solutions are shown to exist that generalize those already known in dimensions 2 and 3. An isoperimetric characterization is given for our solutions, which represent generalized spherical vortex-rings. As a corollary, a sharp Sobolev-type inequality is obtained.

Vibrational signal processing for characterization of fluid flows in pipes

Measurement ◽  
2018 ◽  
Vol 113 ◽  
pp. 196-204 ◽  
Author(s):  
Giuseppe Dinardo ◽  
Laura Fabbiano ◽  
Gaetano Vacca ◽  
Aimé Lay-Ekuakille
Keyword(s):  
Signal Processing ◽  
Fluid Flows ◽  
Vibrational Signal

Directional Solidification and Characterization of Hg1−xCdxTe Alloys

1981 ◽  
Vol 9 ◽  
Author(s):  
S. L. Lehoczky ◽  
F. R. Szofran
Keyword(s):  
Heat Transfer ◽  
High Temperature ◽  
Temperature Gradient ◽  
Directional Solidification ◽  
Fluid Flows ◽  
Heat Transfer Characteristics ◽  
Growth Interface ◽  
Compositional Variations ◽  
Best Fit

ABSTRACTA series of Hg1−xCdxTe alloy crystals was grown by high-temperature-gradient directional solidification at furnace translation rates ranging from 0.068 to 1.12 μm/s. For several ingots, the measured longitudinal compositional profiles were fitted to theoretical profiles to estimate the magnitude of D, the liquid HgTe-CdTe interdiffusion coefficient. The best-fit value of D was about 5.5 × 105 cm2/s. The majority of the ingots showed significant radial compositional variations along the growth axis. These variations are attributed, at least in part, to fluid flows ahead of the growth interface. The results are discussed in terms of the heat transfer characteristics of the alloy/ampule/ furnace system and the effects of these characteristics on the shape and stability of the growth interface in a 1-g environment.

scholarly journals Synthesis and characterization of thallium–salen derivatives for use as underground fluid flow tracers

2018 ◽  
Vol 47 (12) ◽  
pp. 4162-4174 ◽  
Author(s):  
Timothy J. Boyle ◽  
Diana Perales ◽  
Jessica M. Rimsza ◽  
Todd M. Alam ◽  
Daniel M. Boye ◽  
...  
Keyword(s):  
Fluid Flow ◽  
Fluid Flows ◽  
Synthesis And Characterization

[Tl2(salo-But)] (1, shown) and [Tl2(saloPh-But)] (2) were synthesized and characterized for use as monitors for deep subterranean fluid flows.

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