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Two-phase numerical study of the flow field formed in water pump sump: influence of air entrainment [PDF]

, 2009
In a pump sump it is imperative that the amount of non-homogenous flow and entrained air be kept to a minimum. Free air-core vortex occurring at a water-intake pipe is an important problem encountered in hydraulic engineering.
Abustam, Effendi, Ginger, John, Jayashree, Sreenivasan, A Issa, Holmes, John, Edwards, Mark, Ho, Sin Ban, Wehner, Martin, John Ginger, Carl Sandland, ISSA, Abir, Tan, Chuie Hong, G Bois, Bayeul, Annie-Claude, Mark Edwards, John Holmes, Mohiuddin, M., Martin Wehner, BOIS, Gérard, S Simonet, Cocklin, Chris R., BAYEUL-LAINÉ, Annie-Claude, Said, Muhammad Irfan, SIMONET, Sophie, Sandland, Carl, Yusuf, Muhammad, A C Bayeul-Lainé, Dibden, Jacqui, Reza, M. N. H.   +28 more
core   +3 more sources

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

Meikuang 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, WU Qiuxia, ZHANG Yanwei, QIN Hansheng, PANG Lei, LIANG Jinhu, YANG Yuxin, CHEN Minghu   +7 more
doaj   +1 more source

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

Zhongguo 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, Tingqiu LI, Ziping WANG, Lingfu CHEN   +3 more
doaj   +1 more source

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

Journal 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, J. Gao, Y. Han, B. Ai, X. Shao, B. Guo, B. Hao   +6 more
doaj   +1 more source

The Recirculation Zone Characteristics of the Circular Transverse Jet in Crossflow

Energies, 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, Yixiang Yuan, Baoting Guo, V. L. Varsegov, Jun Yao   +4 more
doaj   +1 more source

Finite-Time Transport Structures of Flow Fields

2008 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, Holger Theisel, Tino Weinkauf, Hans-Christian Hege, Hans-Peter Seidel   +4 more
openaire   +2 more sources

Numerical analysis on the flow field structure and deflection characteristics of water jets under nozzle moving conditions

Engineering Applications of Computational Fluid Mechanics, 2020
High-pressure water jets under nozzle moving conditions are widely utilized for rock breakage in geotechnical engineering. The nozzle motion state significantly influences the jet flow field and flow characteristics, thus changing its rock-breaking ...
Songqiang Xiao, Zhaolong Ge, Qingyang Ren, Jialiang Liu, Haiyang Wang   +4 more
doaj   +1 more source

Flow field structure formed around voice prosthesis during shunt vocalization

Nihon 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, Mariko HIRAMATSU, Yasushi FUJIMOTO, Yoshiyuki TSUJI   +3 more
doaj   +1 more source

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

Nihon 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, Ryuga KAWAI, Hibiki YAMASHITA   +2 more
doaj   +1 more source

Structure of Flow Fields in Low Pressure Impactor

Journal of Nuclear Science and Technology, 1998
In order to clarify the detailed flow fields of impinging jets in a low pressure impactor, nitrogen and argon flow fields are investigated experimentally and numerically at a relatively small range of P down/P up, where P down is the downstream stagnation pressure and P up the upstream stagnation pressure. The pressure at the center of collection plate,
SUZUKI, Eiji, SUTO, Osamu
openaire   +1 more source