Results 31 to 40 of about 629,295 (307)

Analysis of the cavitating flow induced by an ultrasonic horn – Experimental investigation on the influence of actuation phase, amplitude and geometrical boundary conditions

EPJ Web of Conferences, 2014
Till today, factors influencing the formation and collapse of densely distributed, interacting cavitation bubbles are only qualitatively understood.
Müller Saskia, Fischper Maurice, Mottyll Stephan, Skoda Romuald, Hussong Jeanette   +4 more
doaj   +1 more source

Effect of Dielectric Distributed Bragg Reflector on Electrical and Optical Properties of GaN-Based Flip-Chip Light-Emitting Diodes

Micromachines, 2018
We demonstrated two types of GaN-based flip-chip light-emitting diodes (FCLEDs) with distributed Bragg reflector (DBR) and without DBR to investigate the effect of dielectric TiO2/SiO2 DBR on optical and electrical characteristics of FCLEDs.
Shengjun Zhou, Haohao Xu, Mengling Liu, Xingtong Liu, Jie Zhao, Ning Li, Sheng Liu   +6 more
doaj   +1 more source

Application of Modern Multimedia and Sensing Technology in Fault Detection and Diagnosis of Hydraulic Agricultural Machinery

Wireless Communications and Mobile Computing, 2022
In order to solve the problem of fault diagnosis of agricultural machinery hydraulic system, the authors propose an application of modern multimedia and sensing technology in fault detection and diagnosis of hydraulic agricultural machinery. By analyzing
Jia Jia, Jijing Lin
semanticscholar   +1 more source

Application of a pressure based CFD code with mass transfer model based on the Rayleigh equation for the numerical simulation of the cavitating flow around a hydrofoil with circular leading edge

EPJ Web of Conferences, 2014
The most common method for simulating cavitating flows is using the governing flow equations in a form with a variable density and treats both phases as incompressible in combination with a transport equation for the vapour volume fraction. This approach
Deimel Christian, Günther Markus, Skoda Romuald   +2 more
doaj   +1 more source

Effects of Nozzle Configuration on Rock Erosion Under a Supercritical Carbon Dioxide Jet at Various Pressures and Temperatures

Applied Sciences, 2017
The supercritical carbon dioxide (SC-CO2) jet offers many advantages over water jets in the field of oil and gas exploration and development. To take better advantage of the SC-CO2 jet, effects of nozzle configuration on rock erosion characteristics were
Man Huang, Yong Kang, Xiaochuan Wang, Yi Hu, Deng Li, Can Cai, Feng Chen   +6 more
doaj   +1 more source

Research on Thermodynamic Characteristics of Hydraulic Power Take-Off System in Wave Energy Converter

Energies, 2022
Hydraulic power-take-off (PTO) systems which utilize high-pressure oil circuits to transmit energy are widely applied in wave energy generation. The properties of hydraulic oil are significantly influenced by environmental conditions, and its dynamic ...
Yubo Niu, Xingyuan Gu, Xuhui Yue, Yang Zheng, Peijie He, Qijuan Chen   +5 more
doaj   +1 more source

Fracture Initiation of an Inhomogeneous Shale Rock under a Pressurized Supercritical CO2 Jet

Applied Sciences, 2017
Due to the advantages of good fracture performance and the application of carbon capture and storage (CCS), supercritical carbon dioxide (SC-CO2) is considered a promising alternative for hydraulic fracturing.
Yi Hu, Yiwei Liu, Can Cai, Yong Kang, Xiaochuan Wang, Man Huang, Feng Chen   +6 more
doaj   +1 more source

Analysis of the cavitating flow induced by an ultrasonic horn – Numerical 3D simulation for the analysis of vapour structures and the assessment of erosion-sensitive areas

EPJ Web of Conferences, 2014
This paper reports the outcome of a numerical study of ultrasonic cavitation using a CFD flow algorithm based on a compressible density-based finite volume method with a low-Machnumber consistent flux function and an explicit time integration [15; 18] in
Mottyll Stephan, Müller Saskia, Niederhofer Philipp, Hussong Jeanette, Huth Stephan, Skoda Romuald   +5 more
doaj   +1 more source

Bio-Based Hydraulic Fluids and the Influence of Hydraulic Oil Viscosity on the Efficiency of Mobile Machinery

Sustainability, 2021
Leakage of hydraulic oils causes long-term damage to the environment. Every year, a significant amount of hydraulic oil is released into the environment through accidents and leakages.
Sebastian Deuster, K. Schmitz
semanticscholar   +1 more source

Nanoscale Assembly of Copper Bearing-Sleeve via Cold-Welding: A Molecular Dynamics Study

Nanomaterials, 2018
A bearing is an important component in contemporary machinery and equipment, whose main function is to support the mechanical rotator, reduce the friction coefficient during its movement, and guarantee the turning accuracy.
Hongjian Zhou, Jiejie Li, Yuehui Xian, Guoming Hu, Xiaoyong Li, Re Xia   +5 more
doaj   +1 more source