Results 21 to 30 of about 3,207 (147)

Enhancing Bulb Turbine Performance Assessing Air Injection for Vibration Mitigation and Hydrofoil Cavitation [PDF]

open access: yesJournal of Applied Fluid Mechanics
Small hydro technology is playing a crucial role in advancing sustainable, clean energy policies as part of the global hydro development strategy. Its contribution to social and economic development is becoming more prominent, particularly in ensuring ...
S. Praveen   +4 more
doaj   +1 more source

Velocity and pressure fluctuations induced by the precessing helical vortex in a conical diffuser [PDF]

open access: yes, 2014
The flow unsteadiness generated in the draft tube cone of hydraulic turbines affects the turbine operation. Therefore, several swirling flow configurations are investigated using a swirling apparatus in order to explore the unsteady phenomena.
Bosic, Alin   +4 more
core   +1 more source

Fast Magnetic Twister and Plasma Perturbations in a 3-D Coronal Arcade

open access: yes, 2014
We present results of 3-D numerical simulations of a fast magnetic twister excited above a foot-point of the potential solar coronal arcade that is embedded in the solar atmosphere with the initial VAL-IIIC temperature profile, which is smoothly extended
Murawski, K.   +2 more
core   +1 more source

Sunspot Rotation as a Driver of Major Solar Eruptions in NOAA Active Region 12158

open access: yes, 2016
We studied the developing conditions of sigmoid structure under the influence of magnetic non-potential characteristics of a rotating sunspot in the active region (AR) 12158.
Cheng, X., Ravindra, B., Vemareddy, P.
core   +1 more source

Solar Magnetized "Tornadoes": Relation to Filaments

open access: yes, 2012
Solar magnetized "tornadoes", a phenomenon discovered in the solar atmosphere, appear as tornado-like structures in the corona but root in the photosphere.
Gan, Weiqun   +4 more
core   +1 more source

The physics of twisted magnetic tubes rising in a stratified medium: two dimensional results [PDF]

open access: yes, 1997
The physics of a twisted magnetic flux tube rising in a stratified medium is studied using a numerical MHD code. The problem considered is fully compressible (no Boussinesq approximation), includes ohmic resistivity, and is two dimensional, i.e., there ...
Collins W. M.   +7 more
core   +2 more sources

SigmaFormer: Augmenting transformer encoders with COSMO sigma profiles for pure component property prediction

open access: yesAIChE Journal, EarlyView.
Abstract Transformer‐based molecular models pretrained on SMILES strings demonstrate strong performance in property prediction. However, these model often lack explicit integration of molecular surface charge distributions that govern intermolecular interactions such as hydrogen bonding and polarity.
Tae Hyun Kim   +2 more
wiley   +1 more source

Turbulent magnetic field amplification from spiral SASI modes in core-collapse supernovae

open access: yes, 2012
We describe the initial implementation of magnetohydrodynamics (MHD) in our astrophysical simulation code \genasis. Then, we present MHD simulations exploring the capacity of the stationary accretion shock instability (SASI) to generate magnetic fields ...
A Mezzacappa   +28 more
core   +1 more source

Unsteady numerical simulation of the flow in the U9 Kaplan turbine model [PDF]

open access: yes, 2014
The Reynolds-averaged Navier-Stokes equations with the RNG k-ε turbulence model closure are utilized to simulate the unsteady turbulent flow throughout the whole flow passage of the U9 Kaplan turbine model.
Javadi, Ardalan, Nilsson, Håkan
core   +1 more source

Harnessing Machine Learning to Understand and Design Disordered Solids

open access: yesAdvanced Intelligent Discovery, EarlyView.
This review maps the dynamic evolution of machine learning in disordered solids, from structural representations to generative modeling. It explores how deep learning and model explainability transform property prediction into profound physical insight.
Muchen Wang, Yue Fan
wiley   +1 more source

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