Results 21 to 30 of about 2,701 (247)

Generation of Ultrasonic-Wave by a Submerged Water Jet

TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B, 2011
Submerged water jet accompanied by ultrasonic-waves is considered to be able to warm up bones under the skin effectively and it is utilized at the rehabilitation facilities. However, there exist few reports about the submerged water jet with ultrasonic-waves.
IMAO, Shigeki, KIKUCHI, Satoshi, KOZATO, Yasuaki, NISHIMOTO, Tsuyoshi, WAKAI, Katsuharu, SHIMOKAWA, Kikuo   +5 more
openaire   +2 more sources

Direct Sailing Variable Acceleration Dynamics Characteristics of Water-Jet Propulsion with a Screw Mixed-Flow Pump

Applied Sciences, 2019
Strong nonlinearity and the relevance of time-varying dynamic parameters in the maneuverable process of water-jet propulsion were major problems encountered in the prediction of variable acceleration dynamics characteristics.
Wei Han, Ting Shang, Min Su, Chengyong Gong, Rennian Li, Bin Meng   +5 more
doaj   +1 more source

Entrainment and Mixing in a Round Submerged Water Jet

Chemical engineering, 1966
Donaldらの装置を改良した角形水槽を用いて。円形水ジェットについて実験を行ない, 次の結諭を得た。1) ジェット角度はほぼ14Gである。2) 軸方向と半径方向の速度分布ならびに濃度分布を測定し、em, e, とScturbを算出した。その結果, 半径方向分布はどれもガウスの誤差曲線でほぼ近似できることを認めた。3) ジェット同伴量を直接測定し実験式を与えるとともに, 流速分布より同伴量式を求めほぼ両者が一致することを確かめた。
Okita, Naosumi, Ito, Shiro
openaire   +2 more sources

Submerged cutting characteristics of abrasive suspension jet

Nihon Kikai Gakkai ronbunshu, 2015
An abrasive suspension jet (ASJ) formed by propelling abrasive suspension through a nozzle has a greater cutting capability than the conventional abrasive water jet.
Seiji SHIMIZU, Hiroyuki NISHIKATA, Guoyi PENG, Yasuyuki OGUMA   +3 more
doaj   +1 more source

Numerical simulation of steam submerged jet and condensation

Zhongguo Jianchuan Yanjiu, 2019
[Objectives] During the discharging of ship-used steam power,steam jet condensation was a common physical process. In order to fully grasp the fundamental physical phenomena within steam submerged jet and condensation under open space,CFD simulation with
Wang Guanghuai, Sun Lu, Wang Chang, Hao Rui, Wang Jianjun   +4 more
doaj   +1 more source

Numerical simulation of coal breaking characteristics by continuous water jet based on ALE algorithm

Meikuang Anquan
In order to explore the influence of environmental media on the characteristics of water jet coal breaking, ALE algorithm and LS-Dyna software are used to carry out numerical simulation of continuous water jet impact coal breaking and the characteristics
Congmeng HAO, Xuexi CHEN, Qingquan LIU, Feiyang JIN   +3 more
doaj   +1 more source

Numerical Simulation Study of the Horizontal Submerged Jet Based on the Wray–Agarwal Turbulence Model

Journal of Marine Science and Engineering, 2022
The horizontal submerged jet (HSJ), as a special form of jet, is widely used in aerospace, food and drug, water engineering, and other industries. In order to further understand the mechanism of the HSJ, the Wray–Agarwal turbulence model was used to ...
Bo Hu, Chuan Wang, Hui Wang, Qian Yu, Jinhua Liu, Yong Zhu, Jie Ge, Xinxin Chen, Yang Yang   +8 more
doaj   +1 more source

Effect of 3D submerged jet shape on maximum pressure of plunge pool bottom

AIP Advances, 2023
Maximum pressure is one of the key factors that affect jet scouring. Previous studies have focused on the attenuation characteristics of the submerged jet, but there are few studies on the influence of the nappe shape on the pressure of the plunge pool ...
Pengfei Xia, Hongke Hao, Hongliang Feng, Kai Song, Wen Liu   +4 more
doaj   +1 more source

Numerical Study of the Normal Impinging Water Jet at Different Impinging Height, Based on Wray–Agarwal Turbulence Model

Energies, 2020
As a kind of water jet technology with strong impinging force and simple structure, the submerged impinging water jet can produce strong scouring action on subaqueous sediments.
Hongliang Wang, Zhongdong Qian, Di Zhang, Tao Wang, Chuan Wang   +4 more
doaj   +1 more source

Study on the optimal parameter matching model of rotary cutting coal-rock for abrasive water jet

Meitan kexue jishu
As coal mining extends deeper, pure water jet technology is gradually unable to meet the demand for coal penetration enhancement under high stress and high coal rock strength conditions.
Jianping WEI, Pengwei XIAO, Huidong ZHANG, Changjiang CHEN, Yong LIU   +4 more
doaj   +1 more source