Publications related to Brush discharge

Beware of your electrodes! How electrode materials and application processes impact the lifetime of slide-ring-material-based DEAs

Herbert Shea

For dielectric elastomer actuators (DEAs) to find more widespread adoption in commercial products, a better understanding of their durability is needed. By determining the different mechanisms contributing to ageing and breakdown in DEAs, new methods for i ...

SPIE-INT SOC OPTICAL ENGINEERING2021

Partial discharge localization using time reversal: application to power transformers and gas-insulated substations

Marcos Rubinstein, Mohammad Azadifar, Farhad Rachidi-Haeri, Amirhossein Mostajabi, Hamidreza Karami

A method for locating one or multiple partial discharge sources in a power transformer or a Gas-Insulated Substation, whereby the partial discharges emit electromagnetic and acoustic waves, the method comprising recording a signal corresponding to the wave ...

2021

Partial Discharge Localization Using Electromagnetic Time Reversal: A Performance Analysis

Marcos Rubinstein, Mohammad Azadifar, Hamidreza Karami, Zhaoyang Wang, Ali Ghasemi

In this study, first, a comparison on the application of electromagnetic time reversal (EMTR) and time difference of arrival (TDoA) in partial discharge localization in power transformers is presented. A two-dimensional finite-difference time-domain simula ...

2020

Separating the effects of heating and current drive on NTM evolution in TCV

Olivier Sauter, Federico Alberto Alfredo Felici, Mengdi Kong

Neoclassical Tearing Modes (NTMs) are widely observed in tokamak plasmas. They have a detrimental effect on plasma confinement and may even lead to disruptions. Therefore it is important to understand the evolution of NTMs, which is influenced by several e ...

2019

New insight in Francis turbine cavitation vortex rope: role of the runner outlet flow swirl number

François Avellan, Christophe Nicolet, Arthur Tristan Favrel, Christian Landry, Andres Müller, Joao Gomes Pereira Junior

At part load operation, Francis turbines experience the development of a cavitation vortex rope in the draft tube, whose precession acts as a pressure excitation source. In case of resonance, the resulting pressure pulsations lead to unacceptable torque an ...

2018

Comparison of runaway electron generation parameters in small, medium-sized and large tokamaks-A survey of experiments in COMPASS, TCV, ASDEX-Upgrade and JET

Basil Duval, Stefano Coda, Yves Martin, Joan Decker, Gergely Papp, Giovanni Tardini

This paper presents a survey of the experiments on runaway electrons (RE) carried out recently in frames of EUROFusion Consortium in different tokamaks: COMPASS, ASDEX-Upgrade, TCV and JET. Massive gas injection (MGI) has been used in different scenarios f ...

Iop Publishing Ltd2018

Investigation of venting turbidity currents in the Rudbar-Lorestan reservoir in Iran

Anton Schleiss, Giovanni De Cesare, Azin Amini, Sabine Chamoun, Sara Venuleo

Venting of turbidity currents is known as an efficient measure to prevent reservoir sedimentation and is applied in many reservoirs globally. It has several economic and ecological advantages compared with other evacuation methods. In the literature, numer ...

2017

Reestablishment of a uniform discharge on the Olympic fountain in Lausanne

Anton Schleiss, Giovanni De Cesare, Elena Battisacco

Since its inauguration, in 1993, the horizontal weir crest of the Olympic fountain in Lausanne has suffered from differential settlings leading to a difference in level of more than 30 mm. The settling involves a visible non-uniform discharge distribution ...

Taylor & Francis Ltd2017

Experimental investigation of the mass flow gain factor in a draft tube with cavitation vortex rope

François Avellan, Arthur Tristan Favrel, Christian Landry, Andres Müller, Sébastien Alligné, Keita Yamamoto

At off-design operating operations, cavitating flow is often observed in hydraulic machines. The presence of a cavitation vortex rope may induce draft tube surge and electrical power swings at part load and full load operations. The stability analysis of t ...

2017

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Brush discharge

Beware of your electrodes! How electrode materials and application processes impact the lifetime of slide-ring-material-based DEAs

Could Macroscopic Dark Matter (Macros) Give Rise to Mini-Lightning Flashes out of a Blue Sky without Clouds?

Partial discharge localization using time reversal: application to power transformers and gas-insulated substations

Partial Discharge Localization Using Electromagnetic Time Reversal: A Performance Analysis

Separating the effects of heating and current drive on NTM evolution in TCV

New insight in Francis turbine cavitation vortex rope: role of the runner outlet flow swirl number

Comparison of runaway electron generation parameters in small, medium-sized and large tokamaks-A survey of experiments in COMPASS, TCV, ASDEX-Upgrade and JET

Investigation of venting turbidity currents in the Rudbar-Lorestan reservoir in Iran

Reestablishment of a uniform discharge on the Olympic fountain in Lausanne

Experimental investigation of the mass flow gain factor in a draft tube with cavitation vortex rope

Graph Chatbot

Chat with Graph Search

Experimental investigation of the mass flow gain factor in a draft tube with cavitation vortex rope

Beware of your electrodes! How electrode materials and application processes impact the lifetime of slide-ring-material-based DEAs

Comparison of runaway electron generation parameters in small, medium-sized and large tokamaks-A survey of experiments in COMPASS, TCV, ASDEX-Upgrade and JET

Could Macroscopic Dark Matter (Macros) Give Rise to Mini-Lightning Flashes out of a Blue Sky without Clouds?

Separating the effects of heating and current drive on NTM evolution in TCV

Reestablishment of a uniform discharge on the Olympic fountain in Lausanne

Partial discharge localization using time reversal: application to power transformers and gas-insulated substations

Partial Discharge Localization Using Electromagnetic Time Reversal: A Performance Analysis

New insight in Francis turbine cavitation vortex rope: role of the runner outlet flow swirl number

Investigation of venting turbidity currents in the Rudbar-Lorestan reservoir in Iran