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相关论文: Predicting Solar Wind Streams from the Inner-Helio…

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We investigate the propagation of high-speed solar wind streams from their origin near the Sun to 1 AU using three-dimensional magnetohydrodynamic simulations. By tracking both global stream structure and individual plasma parcels, we…

太阳与恒星天体物理 · 物理学 2026-05-05 Stefan J. Hofmeister

Solar wind classification is conducive to understand the physical processes ongoing at the Sun and solar wind evolution in the interplanetary space, and furthermore, it is helpful for early warning of space weather events. With rapid…

空间物理 · 物理学 2019-08-26 Hui Li , Chi Wang , Cui Tu , Fei Xu

Meridional flow is thought to play a very important role in the dynamics of the solar convection zone; however, because of its relatively small amplitude, precisely measuring it poses a significant challenge. Here we present a complete…

太阳与恒星天体物理 · 物理学 2015-06-02 J. Jackiewicz , A. Serebryanskiy , S. Kholikov

White-light images from Heliospheric Imager-1 (HI1) onboard the Solar Terrestrial Relations Observatory (STEREO) provide 2-dimensional (2D) global views of solar wind transients traveling in the inner heliosphere from two perspectives. How…

太阳与恒星天体物理 · 物理学 2020-08-05 Xiaolei Li , Yuming Wang , Rui Liu , Chenglong Shen , Quanhao Zhang , Shaoyu Lyu , Bin Zhuang , Fang Shen , Jiajia Liu , Yutian Chi

To enhance the accuracy of power load forecasting in wind farms, this study introduces an advanced combined forecasting method that integrates Variational Mode Decomposition (VMD) with an Improved Particle Swarm Optimization (IPSO)…

机器学习 · 计算机科学 2024-12-17 Qiang Xie

Although it is widely accepted that photospheric motions provide the energy source and that the magnetic field must play a key role in the process, the detailed mechanisms responsible for heating the Sun's corona and accelerating the solar…

太阳与恒星天体物理 · 物理学 2016-01-12 Roberto Lionello , Marco Velli , Cooper Downs , Jon A. Linker , Zoran Mikić

A general method for constructing high order upwind schemes for multidimensional magnetohydrodynamics (MHD), having as a main built-in condition the divergence-free constraint $\divb=0$ for the magnetic field vector $\bb$, is proposed. The…

天体物理学 · 物理学 2009-10-31 P. Londrillo , L. Del Zanna

Numerical simulations of contaminant dispersion, as after a gas leakage incident on a chemical plant, can provide valuable insights for both emergency response and preparedness. Simulation approaches combine incompressible Navier-Stokes…

计算工程、金融与科学 · 计算机科学 2026-03-05 Lisa Kühn , Jacopo Bonari , Max von Danwitz , Alexander Popp

Forecasting future weather and climate is inherently difficult. Machine learning offers new approaches to increase the accuracy and computational efficiency of forecasts, but current methods are unable to accurately model uncertainty in…

机器学习 · 计算机科学 2023-02-02 Yusuke Hatanaka , Yannik Glaser , Geoff Galgon , Giuseppe Torri , Peter Sadowski

We present fully self consistent 3D simulations of compressible Hall MHD plasma that describe spectral features relevant to the solar wind plasma. We find that a $k^{-7/3}$ spectrum sets in for the fluctuations that are smaller than ion…

空间物理 · 物理学 2015-05-14 Dastgeer Shaikh , G. P. Zank

We present results from Lyon-Fedder-Mobarry (LFM) global, three-dimensional magnetohydrodynamic (MHD) simulations of the solar wind-magnetosphere interaction. We use these simulations to investigate the role that solar wind dynamic pressure…

空间物理 · 物理学 2010-10-20 S. G. Claudepierre , M. Wiltberger , S. R. Elkington , W. Lotko , M. K. Hudson

The solar atmosphere is known to contain many different types of wavelike oscillation. Waves and other fluctuations (e.g., turbulent eddies) are believed to be responsible for at least some of the energy transport and dissipation that heats…

太阳与恒星天体物理 · 物理学 2023-08-09 Steven R. Cranmer , Momchil E. Molnar

We derive a set of simplified equations that can be used for numerical studies of reduced magnetohydrodynamic turbulence within a small patch of the radially expanding solar wind. We allow the box to be either stationary in the Sun's frame…

等离子体物理 · 物理学 2025-01-30 Vincent David , Benjamin D. G. Chandran , Romain Meyrand , Jonathan Squire , Evan L. Yerger

A model-order reduction framework for the meshless smoothed-particle hydrodynamics (SPH) method is presented. The proposed framework introduces the concept of modal reference spaces to overcome the challenges of discovering low-dimensional…

Generation and load balance is required in the economic scheduling of generating units in the smart grid. Variable energy generations, particularly from wind and solar energy resources, are witnessing a rapid boost, and, it is anticipated…

机器学习 · 计算机科学 2017-04-07 Mohamed Abuella , Badrul Chowdhury

It is well established that the magnetically structured solar atmosphere supports the propagation of MHD waves along various kind of jets including also the solar wind. It is well-known as well that under some conditions, namely high enough…

太阳与恒星天体物理 · 物理学 2020-03-11 I. Zhelyazkov , Z. Dimitrov , M. Bogdanova

In the past decade, significant efforts have been made in developing physics-based solar wind and coronal mass ejection (CME) models, which have been or are being transferred to national centers (e.g., SWPC, CCMC) to enable space weather…

太阳与恒星天体物理 · 物理学 2022-04-06 Meng Jin , Nariaki V. Nitta , Christina M. S. Cohen

This work proposes novel techniques for the efficient numerical simulation of parameterized, unsteady partial differential equations. Projection-based reduced order models (ROMs) such as the reduced basis method employ a (Petrov-)Galerkin…

数值分析 · 数学 2023-12-05 Nicholas Mueller , Santiago Badia

The solar atmosphere is extremely dynamic, and many important phenomena develop on small scales that are unresolved in observations with the Helioseismic and Magnetic Imager (HMI) instrument on the Solar Dynamics Observatory (SDO). For…

太阳与恒星天体物理 · 物理学 2015-08-06 Irina N. Kitiashvili , Sebastien Couvidat , Andreas Lagg

The widespread utilisation of grid-integrated wind electricity necessitates accurate and reliable wind speed forecasting to ensure stable grid and quality power. Machine learning algorithm based wind speed forecasting models are getting…

信号处理 · 电气工程与系统科学 2018-08-13 Valsaraj Perumpalot , G. V. Drisya , K. Satheesh Kumar