Results 71 to 80 of about 4,429,001 (256)

Background-oriented schlieren (BOS) for scramjet inlet-isolator investigation [PDF]

open access: yes, 2018
Background-oriented Schlieren (BOS) technique is a recently invented non-intrusive flow diagnostic method which has yet to be fully explored in its capabilities.
Idris, Azam Che   +3 more
core   +1 more source

Contactless Electromagnetic Phase-Shift Flowmeter for Liquid Metals [PDF]

open access: yes, 2011
We present a concept and test results of an eddy-current flowmeter for liquid metals. The flow rate is determined by applying a weak ac magnetic field to a liquid metal flow and measuring the flow-induced phase disturbance in the external electromagnetic
Buchenau, Dominique   +2 more
core   +2 more sources

Study on the Hydrodynamic Performance of Typical Underwater Bionic Foils with Spanwise Flexibility

open access: yesApplied Sciences, 2017
Bionic foils are usually similar in shape to the locomotive organs of animals living in fluid media, which is helpful in the analysis of the motion mode and hydrodynamic mechanisms of biological prototypes.
Kai Zhou, Junkao Liu, Weishan Chen
doaj   +1 more source

Study on the Trajectory of Free-End Fiber in Jet Vortex Spinning Based on the Elastic Thin-Rod Finite Element Model of Flexible Fiber

open access: yesAUTEX Research Journal, 2020
During the air flow twisting process of jet vortex spinning, the moving characteristics of flexible free-end fiber are complex. In this paper, the finite element model of the fiber is established based on elastic thin rod element.
Han Chenchen, Gao Weidong, Chen Lifen
doaj   +1 more source

Numerical simulation on the flow field characteristics and impact capability of liquid nitrogen jet

open access: yes, 2018
With the rapid progress of petroleum engineering, liquid nitrogen jet is expected to be used for perforation and jet fracturing, and then provide a new method for unconventional reservoirs efficient development.
Chengzheng Cai   +3 more
semanticscholar   +1 more source

Time-Explicit Simulation of Wave Interaction in Optical Waveguide Crossings at Large Angles [PDF]

open access: yes, 1991
The time-explicit finite-difference time-domain method is used to simulate wave interaction in optical waveguide crossings at large angles. The wave propagation at the intersecting structure is simulated by time stepping the discretized form of the ...
Chaudhuri, Sujeet K.   +2 more
core   +2 more sources

Characterization of the Internal and External Flow Field of a Semi-Submersible Aquaculture Platform with Multiple Net Cage Configuration

open access: yesJournal of Marine Science and Engineering
To achieve efficient and sustainable marine aquaculture, STAR-CCM+ was used to simulate the internal and external field characteristics of a semi-submersible aquaculture platform based on a porous media model, focusing on the influence of incoming flow ...
Bo Hu   +4 more
doaj   +1 more source

Structural Design and Flow Field Characteristics Analysis of Self-Propelled Multi-Hole Jet Bit

open access: yesShiyou jixie, 2019
To prevent the jet nozzle sticking problem caused by nozzle sticking against the bottomhole during drilling, a self-propelled multi-hole jet bit with support plate is designed.
Wu Chenghuai   +5 more
doaj  

Characteristics of Dual Transverse Injection in Supersonic Flow Fields I-Mixing Characteristics [PDF]

open access: yesJournal of the Korean Society for Aeronautical & Space Sciences, 2002
Based on the analyses of the single transverse injection in supersonic flow fields, the mixing characteristics of dual transverse injection of hydrogen in supersonic air flow are studied with computational methods. Three-dimensional Navier -Stokes and the k- SST turbulence model were used.
openaire   +1 more source

Flow Field Simulation of a Hydrogeological Exploration Drill Bit for Switching between Coring Drilling and Non-Coring Drilling

open access: yesApplied Sciences
Drilling is one of the most commonly used techniques in hydrogeological exploration and is employed to obtain rock samples and create boreholes. During conventional drilling, it is necessary to raise all the drilling tools in the borehole when switching ...
Yuanling Shi, Conghui Li
doaj   +1 more source

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