Results 11 to 20 of about 584,538 (262)

Study on Sand-Accumulation Changes of Highway and Formation Mechanism of Sand Damage in Drifting Dunes Areas

open access: yesApplied Sciences, 2022
After the construction of desert highway, the physiognomy changes caused by surface wind erosion and accumulation not only seriously threaten the stability of road structure, but also have a tremendous impact on the safety of the highway operation and ...
Feng Han   +4 more
doaj   +1 more source

Application of laser schlieren technology in the study of gas deflagration in coal mines

open access: yesMeikuang Anquan, 2021
In order to be able to “see” the information inside the structure about premixed gas of air and gas deflagration flow field in a underground coal mine, to recognize the coupling relationship between shock wave and flame, obstacles accelerating the ...
HU Yang   +7 more
doaj   +1 more source

Numerical simulation of fixed/floating structure through-type turbulence flow field

open access: yesZhongguo Jianchuan Yanjiu, 2022
ObjectivesIn order to reveal the mechanism of perforated fixed and floating structure through-type flow fields in local high turbulence, breaking waves and fluid separation, three types of typical active/passive perforated structures (gushing floating ...
Jiajun WU   +3 more
doaj   +1 more source

Experimental and LES Studies of Propane–air Premixed Gases in Pipelines Containing Mixed Obstacles [PDF]

open access: yesJournal of Applied Fluid Mechanics
This study investigated the effect of a mixed obstacle layout on the deflagration mechanism of propane–air premixed gases. Most previous studies focused on a single type of obstacle, changing the shape and number of the obstacles to observe the effect on
Y. Wu   +6 more
doaj   +1 more source

The Recirculation Zone Characteristics of the Circular Transverse Jet in Crossflow

open access: yesEnergies, 2020
Transverse jets in crossflow are widely used in energy systems, especially as dilution air jets, fuel/air mixers, and combustion equipment, and have received extensive attention and plenty of research.
Ziwan Li   +4 more
doaj   +1 more source

Finite-Time Transport Structures of Flow Fields

open access: yes2008 IEEE Pacific Visualization Symposium, 2008
Modern experimental and computational fluid mechanics are increasingly concerned with the structure nature of fluid motion. Recent research has highlighted the analysis of one transport structure which is called Lagrangian coherent structure. However, the quantity nature of the flow transport is still unclear.
Kuangyu Shi   +4 more
openaire   +2 more sources

Flow field structure formed around voice prosthesis during shunt vocalization

open access: yesNihon Kikai Gakkai ronbunshu, 2021
The shunt speech is a voice restoration method after total laryngectomy. However, the shunt speech has the disadvantage of poor voice quality. In shunt speech, the airflow characteristics of the voice prosthesis in the tracheoesophageal wall are greatly ...
Seiya KOSAKO   +3 more
doaj   +1 more source

Shape optimization of viscous flow field considering fluid-structure-interactive

open access: yesNihon Kikai Gakkai ronbunshu, 2021
This paper presents numerical solution to a shape optimization of viscous flow field for stationary fluid-structure-interactive (FSI) fields. In the FSI analysis, a weak coupled analysis is used to alternately analyze the governing equations of the flow ...
Eiji KATAMINE   +2 more
doaj   +1 more source

Structure Design of Abrasive-Flat-Jet Nozzle for Cavity Completion of Horizontal Coalbed Methane Well

open access: yesShiyou jixie, 2021
The current hydraulic cave-making methods cannot determine the geometric size and shape of the caverns of vertical wells for coal-bed methane development, while the mechanical cavern-making method is prone to cutter bar deformation and tools falling into
Yang Ruiyue   +5 more
doaj  

Study on Inlet Flow Field Structure and End-Wall Effect of Axial Flow Pump Impeller under Design Condition

open access: yesEnergies, 2022
The existing experimental technology cannot accurately and quantitatively measure the flow field structure and the wall boundary layer displacement effect in the axial flow pump.
Yanlei Guo   +4 more
doaj   +1 more source

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