Results 111 to 120 of about 69,070 (213)

Scaling laws of the plasma velocity in visco-resistive magnetohydrodynamic systems

Fundamental Plasma Physics
We consider a visco-resistive magnetohydrodynamic modelling of a steady-state incompressible tokamak plasma with a prescribed toroidal current drive, featuring constant resistivity η and viscosity ν.
A. Krupka, M.-C. Firpo
doaj  

Rapid arc extinguishing of a double-ended electromagnetic air-blast segmented arc-extinguishing device

电力工程技术
To address the issue of decreased reliability in power transmission caused by the incapability of existing parallel protection gaps to actively extinguish arcs，a method utilizing the power-flow current flowing through coil to generate a magnetic field ...
Xiong LI, Tingfang YANG, Huikang ZHOU, Wenchao YANG, Minghao FENG, Chao ZHUO   +5 more
doaj   +1 more source

Heat and mass transfer analysis of non-Newtonian power-law nanofluid confined within annulus enclosure using Darcy-Brinkman-Forchheimer model

Case Studies in Thermal Engineering, 2022
Non-Newtonian fluids are encountered in many engineering applications, such as the petroleum industry and lubrication. In this investigation, the Magnetohydrodynamic (MHD) and convective boundary (heater) are assumed to analyze the heat transport ...
Aissa Abderrahmane, Wasim Jamshed, Azher M. Abed, Ghassan Fadhil Smaisim, Kamel Guedri, Suriya Uma Devi S, Omid Ali Akbari, Obai Younis, Shaghayegh Baghaei   +8 more
doaj  

Astrophysical turbulence modeling

, 2011
The role of turbulence in various astrophysical settings is reviewed. Among the differences to laboratory and atmospheric turbulence we highlight the ubiquitous presence of magnetic fields that are generally produced and maintained by dynamo action.
Alexandrova O, Allende Prieto C, Antia H M, Asplund M, Axel Brandenburg, Bahcall J N, Bahcall J N, Bahcall J N, Ballot J, Barge P, Bate M R, Benevolenskaya E E, Beresnyak A, Berezinskii V S, Binney J, Boldyrev S, Boldyrev S, Boldyrev S, Boldyrev S, Bonnor W B, Brandenburg A, Brandenburg A, Brandenburg A, Brandenburg A, Brandenburg A, Brandenburg A, Brandenburg A, Brandenburg A, Brandenburg A, Brandenburg A Kuroda T, Brown B P, Brummell N H, Brun A S, Brun A S, Brunt C M, Brunt C M, Busse F H, Cai K, Choudhuri A R, Crutcher R M, Crutcher R M, Davidson P A, de Avillez M A, De Villiers J-P, Del Sordo F Brandenburg A, Dolag K, Durisen R H, Frank J, Frisch U, Fryxell B, Galtier S, Gammie C F, Goldreich P, Green C A, Green C A, Haugen N E L, Hawley J F, Haxton W C, Hodgson L S, Hubbard A, Hubbard A Brandenburg A, Inaba S, Inutsuka S, Iroshnikov P S, Jappsen A-K, Johansen A Oishi J S Mac Low M-M Klahr H Henning T Youdin A, Kadomtsev B B, Kitchatinov L L, Kleeorin N, Korpi M J, Krause F, Kritsuk A G, Kritsuk A G, Kritsuk A G, Kritsuk A G, Kritsuk A G, Krolik J H, Krumholz M R, Krumholz M R, Käpylä P J Korpi M J, Küker M, Larson R B, Larson R B, Lighthill M J, Lithwick Y, Lithwick Y, Mac Low M-M, Machida M, Machida M, Miesch M S, Miesch M S, Mihalas D, Mitra D, Mitra D, Moffatt H K, Nordlund Å, O'Shea B W, Padoan P, Padoan P, Padoan P, Padoan P, Padoan P, Padoan P Nordlund Å, Pan L, Parker E N, Perez J C, Ponty Y, Pouquet A Baerenzung J Pietarila Graham J Mininni P Politano H Ponty Y, Pulkkinen P, Rempel M, Rempel M, Richard O, Richtmyer R D, Rieutord M, Roettiger K, Roettiger K, Rogers T M, Ruediger G, Ruzmaikin A, Schekochihin A A, Schekochihin A A, Schekochihin A A, Shakura N I, Shore S N, Smith C W, Solanki S K, Spiegel E A, Stefani F, Stein R F, Stein R F, Steinmetz M, Stone J M, Subramanian K, Troland T H, Truelove J K, Tuominen I, Turner N J, Vishniac E T, Vishniac E T, Vázquez-Semadeni E, Wik D R, Wyngaard J C, Yusef-Zadeh F, Åke Nordlund   +143 more
core   +1 more source

Research Progress and Prospects on Pantograph-Catenary Arcing in Urban Rail Transit

Chengshi guidao jiaotong yanjiu
［Objective］ Pantograph-catenary (PC) arcing degrades the train current collection quality, causes ablation of pantograph carbon strips and contact wires, and consequently affects safety and stability of train operation.
ZHANG Yuhang, WEI Zhiheng, ZHOU Yuxiang, MA Zhipeng   +3 more
doaj   +1 more source

Sizes of Active Galactic Nucleus Inhomogeneous Disks—Large in Microlensing, Small in Reverberation Mapping

The Astrophysical Journal
Magnetohydrodynamic turbulence can drive significant temperature fluctuations in the accretion disk of an active galactic nucleus (AGN). As a result, the disk can be highly inhomogeneous and has a half-light radius larger than the static Shakura and ...
Guowei Ren, Mouyuan Sun, Jun-Xian Wang, Zhen-Yi Cai   +3 more
doaj   +1 more source

Cosmic Ray Scattering by Compressible Magnetohydrodynamic Turbulence [PDF]

arXiv, 2003
Recent advances in understanding of magnetohydrodynamic (MHD) turbulence call for substantial revisions in the picture of cosmic ray transport. In this paper we use recently obtained scaling laws for MHD modes to calculate the scattering frequency for cosmic rays in the ISM. We consider gyroresonance with MHD modes (Alfvenic, slow and fast) and transit-
arxiv  

Active Flow Control of the Magnetohydrodynamic Flow in an Annular Linear Induction Pump by Modifying the Driving Electromagnetic Field

International Journal of Energy Research
The strong coupling between fluid and electromagnetic field in the annular linear induction pump (ALIP) can gradually amplify small disturbance in the fluid field into large‐scale vortices. The appearance of the vortices seriously affects the efficiency and reliability of the pump.
Xiaojie Wang, Dayong Wang, Xing Zhang, Di Xia, Yun Zhong, Ruijie Zhao   +5 more
openaire   +1 more source

A Data-driven Magnetohydrodynamic Simulation of the 2011 February 15 Coronal Mass Ejection from Active Region NOAA 11158

The Astrophysical Journal
We present a boundary data-driven magnetohydrodynamic (MHD) simulation of the 2011 February 15 coronal mass ejection (CME) event of Active Region NOAA 11158.
Yuhong Fan, Maria D. Kazachenko, Andrey N. Afanasyev, George H. Fisher   +3 more
doaj   +1 more source

Simulating X-Ray Reverberation in the Ultraviolet-emitting Regions of Active Galactic Nuclei Accretion Disks with Three-dimensional Multifrequency Radiation Magnetohydrodynamic Simulations

The Astrophysical Journal Letters
Active galactic nuclei (AGN) light curves observed with different wave bands show that the variability in longer wavelength bands lags the variability in shorter wavelength bands.
Amy Secunda, Yan-Fei Jiang, Jenny E. Greene   +2 more
doaj   +1 more source