Results 21 to 30 of about 82,459 (305)

Integral and statistical characteristics of the turbulent swirl flow in a straight conical diffuser [PDF]

Theoretical and Applied Mechanics, 2018
The results of the experimental investigations of the turbulent swirl flow in a straight conical diffuser with inlet diameter 0.4m and total divergence angle 8.6◦ are presented in this paper.
Ilić Dejan B., Čantrak Đorđe S., Janković Novica Z.   +2 more
doaj   +1 more source

Influence of the boundary conditions on the natural frequencies of a Francis turbine [PDF]

, 2016
Natural frequencies estimation of Francis turbines is of paramount importance in the stage of design in order to avoid vibration and resonance problems especially during transient events.
Bossio, Matias, Egusquiza Estévez, Eduard, Presas Batlló, Alexandre, Ramos Martín, David, Valentín Ruiz, David, Valero Ferrando, Ma. del Carmen   +5 more
core   +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

Hydraulic fracturing in cells and tissues: fracking meets cell biology [PDF]

, 2017
The animal body is fundamentally made of water. A small fraction of this water is freely flowing in blood and lymph, but most of it is trapped in hydrogels such as the extracellular matrix (ECM), the cytoskeleton, and chromatin.
Arroyo Balaguer, Marino, Trepat Guixer, Xavier   +1 more
core   +4 more sources

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 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

An InGaN/GaN Superlattice to Enhance the Performance of Green LEDs: Exploring the Role of V-Pits

Nanomaterials, 2018
Despite the fact that an InGaN/GaN superlattice (SL) is useful for enhancing the performance of a GaN-based light-emitting diode (LED), its role in improving the efficiency of green LEDs remains an open question. Here, we investigate the influence of a V-
Mengling Liu, Jie Zhao, Shengjun Zhou, Yilin Gao, Jinfeng Hu, Xingtong Liu, Xinghuo Ding   +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