Results 41 to 50 of about 34,250 (159)

Major scientific challenges and opportunities in understanding magnetic reconnection and related explosive phenomena throughout the universe [PDF]

, 2019
This is a group white paper of 100 authors (each with explicit permission via email) from 51 institutions on the topic of magnetic reconnection which is relevant to 6 thematic areas.
Alt, A., Antiochos, S., Ji, Hantao, Opher, Merav   +3 more
core  

Impact of Uncertain Parameters on Navier–Stokes Equations With Heat Transfer via Polynomial Chaos Expansion

International Journal for Numerical Methods in Fluids, EarlyView.
This study investigates the impact of uncertain parameters on Navier–Stokes equations coupled with heat transfer using the Intrusive Polynomial Chaos Method (IPCM). Sensitivity equations are formulated for key input parameters, such as viscosity and thermal diffusivity, and solved numerically using the Finite Element‐Volume method.
N. Nouaime, B. Després, M. A. Puscas, C. Fiorini   +3 more
wiley   +1 more source

Analytical and Numerical Soliton Solutions of the Shynaray II‐A Equation Using the G′G,1G$$ \left(\frac{G^{\prime }}{G},\frac{1}{G}\right) $$‐Expansion Method and Regularization‐Based Neural Networks

Mathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT Nonlinear differential equations play a fundamental role in modeling complex physical phenomena across solid‐state physics, hydrodynamics, plasma physics, nonlinear optics, and biological systems. This study focuses on the Shynaray II‐A equation, a relatively less‐explored parametric nonlinear partial differential equation that describes ...
Aamir Farooq, H. W. A. Riaz, Sadique Rehman, M. Mamun Miah, Wen Xiu Ma   +4 more
wiley   +1 more source

Large Deformation Pile‐soil Interaction Under Lateral Vehicle Impact Using Hybrid SPH+FEM and EFG+FEM Models

International Journal for Numerical and Analytical Methods in Geomechanics, EarlyView.
ABSTRACT This study presents large deformation computational methods to simulate lateral vehicular impacts on steel piles in granular soil. Soil‐mounted longitudinal barrier systems rely on energy dissipation in both the piles and the surrounding soil to safely redirect errant vehicles, so dynamic pile‐soil interaction is important for design ...
Tewodros Y. Yosef, Chen Fang, Seunghee Kim, Ronald K. Faller, Qusai A. Alomari, Mojtaba Atash Bahar, Gnyarienn S. Kumar   +6 more
wiley   +1 more source

High Resolution CO Observations of Massive Star Forming Regions

, 2011
Context. To further understand the processes involved in the formation of massive stars, we have undertaken a study of the gas dynamics surrounding three massive star forming regions.
Beltrán, Beltrán, Beuther, Beuther, C. D. Wilson, Choi, Davis, Di Francesco, E. R. Keto, Eisner, Fish, Furuya, Galván-Madrid, Garay, Garay, Girart, H.-Y. B. Liu, Herbst, Ho, Hosokawa, Hunter, Kameya, Keto, Keto, Keto, Keto, Keto, Keto, Keto, Keto, Klaassen, Klaassen, Klaassen, Liu, Liu, Liu, López-Sepulcre, Margulis, McKee, Moscadelli, P. D. Klaassen, Peretto, Pestalozzi, Peters, Peters, Purcell, Q. Zhang, Qiu, R. Galván-Madrid, Reach, Shepherd, Shu, Sollins, Sollins, Sollins, Wang, Ward-Thompson, Wu, Yorke, Zapata, Zhang, Zheng   +61 more
core   +1 more source

Anomalous‐Energy Runaway Electrons Originating in Fast Ionisation Wave During Pulsed Gas Breakdown

High Voltage, EarlyView.
ABSTRACT Anomalous‐energy runaway electrons (RAEs), whose energy exceeds the maximum potential difference across the discharge gap, are widely observed in various plasma phenomena. This study investigates the origination of anomalous‐energy RAEs in fast ionisation waves (FIWs) formed during pulsed gas breakdown.
Bangdou Huang, Chenhua Ren, Cheng Zhang, Edl Schamiloglu, Tao Shao   +4 more
wiley   +1 more source

The Wisconsin Plasma Astrophysics Laboratory

, 2015
The Wisconsin Plasma Astrophysics Laboratory (WiPAL) is a flexible user facility designed to study a range of astrophysically relevant plasma processes as well as novel geometries that mimic astrophysical systems. A multi-cusp magnetic bucket constructed
Brookhart, M., Clark, M., Cooper, C. M., Desangles, V., Egedal, J., Endrizzi, D., Flanagan, K., Forest, C. B., Khalzov, I. V., Li, H., Miesch, M., Milhone, J., Nornberg, M., Olson, J., Peterson, E., Roesler, F., Schekochihin, A., Schmitz, O., Siller, R., Spitkovsky, A., Stemo, A., Wallace, J., Weisberg, D., Zweibel, E.   +23 more
core   +1 more source

Alternative Approaches for Estimating Highest‐Density Regions

International Statistical Review, EarlyView.
Summary Among the variety of statistical intervals, highest‐density regions (HDRs) stand out for their ability to effectively summarise a distribution or sample, unveiling its distinctive and salient features. An HDR represents the minimum size set that satisfies a certain probability coverage, and current methods for their computation require ...
Nina Deliu, Brunero Liseo
wiley   +1 more source

Quasi-Periodic Oscillations from Low-Mass X-Ray Binaries with Neutron Stars

, 2004
Before the launch of the Rossi X-ray Timing Explorer (RXTE) it was recognized that neutron star accretion disks could extend inward to very near the neutron star surface, and thus be governed by millisecond timescales.
Swank, Jean
core   +1 more source

Vertical profiling of shock attenuation at the Rochechouart impact structure, France

Meteoritics &Planetary Science, EarlyView.
Abstract Rochechouart, south‐west France, is a complex impact structure. Here, we present the first report of shock barometry of quartz from what are likely parautochthonous basement units at depth, based on samples from the 2017 C.I.R.I.R drilling campaign. The crystallographic orientations of 725 sets of PDFs in 512 quartz grains in samples from four
P. Struzynska, S. Alwmark, C. Alwmark, M. H. Poelchau, P. Lambert   +4 more
wiley   +1 more source