Results 131 to 140 of about 42,668 (331)

Cluster‐Mediated Solute Stabilization and Shear‐Bypass Synergistic Strengthening in High‐Alloyed Systems

Advanced Science, EarlyView.
This study demonstrates that in high‐alloy systems, nanoclusters with high solute tolerance can effectively suppress compositional segregation. This mitigation leads to a concurrent 18.7% increase in strength and 41.5% improvement in ductility, which is attributed to a shear‐bypass synergistic strengthening mechanism. The findings provide a new pathway
Wei Yu, Yu Bai, Jiawen Li, Kaixi Jiang, Hai Hao, Tao Jiang, Shunan Zhang, Yong Li, Zhaodong Wang, Kai Zhao, Shiwei Li   +10 more
wiley   +1 more source

Formation of WNL Stars in the MW and LMC Based on the k − ω Model

The Astrophysical Journal
We adopt a set of second-order differential equations ( k − ω model) to handle core convective overshooting in massive stars, simulate the evolution of nitrogen sequence Wolf–Rayet (WNL) stars with different metallicities and initial masses, both ...
Jijuan Si, Zhi Li, Yan Li
doaj   +1 more source

New Methods in Modeling of Hot Stellar Atmospheres

Open Astronomy, 2013
In the present study we had three main aims. First to study the possibility of reducing the initial model atmosphere data to short analytical polynomials.
Sapar A., Poolamäe R., Sapar L.
doaj   +1 more source

Numerical simulations of stellar convective dynamos III. At the base of the convection zone [PDF]

Geophysical & Astrophysical Fluid Dynamics, 1985
We describe numerical simulations of giant-cell solar convection and magnetic field generation. Nonlinear, three-dimensional, time-dependent solutions of the anelastic magnetohydrodynamic equations are presented for a stratified, rotating, spherical shell of ionized gas.
openaire   +1 more source

In‐Wheel Piezoelectric DC Power Generator With Zero Resistive Torque

Advanced Science, EarlyView.
In this paper, we present a wheel‐shaped direct‐current piezoelectric generator (DC‐PG) that fundamentally overcomes these constraints by producing phase‐stable DC electricity directly from rolling motion. By embedding this system into suitcase wheels, we demonstrated a fully integrated real‐time location tracking system powered solely by mechanical ...
Hyun Soo Kim, Hyunseok Song, In Woo Oh, Dong‐Gyu Lee, Tae Kyoung Yoon, Jeyeon Lee, Byoung Jin Yoon, So‐Min Song, Iman M. Imani, Seohyun Cho, Seong Jin Kim, Chong‐Yun Kang, Sahn Nahm, Yong Seok Park, Kyung‐Hoon Cho, Jungho Ryu, Jeong Min Baik, Jun Chen, Sunghoon Hur, Hyun‐Cheol Song   +19 more
wiley   +1 more source

3D Hydrodynamic Simulations of Massive Main-sequence Stars. III. The Effect of Radiation Pressure and Diffusion Leading to a 1D Equilibrium Model

The Astrophysical Journal
We present 3D hydrodynamical simulations of core convection with a stably stratified envelope of a 25 M _⊙ star in the early phase of the main sequence.
Huaqing Mao, Paul Woodward, Falk Herwig, Pavel A. Denissenkov, Simon Blouin, William Thompson, Benjamin McDermott   +6 more
doaj   +1 more source

Evolution and Nucleosynthesis of AGB stars in Three Magellanic Cloud Clusters

, 2011
We present stellar evolutionary sequences for asymptotic giant branch (AGB) stars in the Magellanic Cloud clusters NGC 1978, NGC 1846 and NGC 419. The new stellar models for the three clusters match the observed effective temperatures on the giant ...
A. I. Karakas, Bessell, Busso, Cannon, Charbonnel, Charbonnel, Cyburt, D. Kamath, Eggleton, Feast, Forestini, Frost, Gallino, Girardi, Girardi, Goriely, Goudfrooij, Groenewegen, Herwig, Herwig, Karakas, Liebert, Lloyd Evans, Lodders, Lugaro, Mackey, Marigo, Mowlavi, Mowlavi, Mucciarelli, Mucciarelli, Mucciarelli, Nordhaus, P. R. Wood, Stanghellini, Stanghellini, Straniero, Wang, Wood   +38 more
core   +1 more source

Sub‐Unit‐Cell Logic Governs Transport in TPMS Architectures

Advanced Science, EarlyView.
ABSTRACT Next‐generation energy, thermal, and chemical systems require architectures capable of highly efficient transport across multiple length scales. Triply periodic minimal surfaces (TPMS), first conceptualized in 1865, offer inherently scalable geometries with exceptional transport potential, yet mechanistic links between topology and performance
Haozhang Zhong, Yipei He, Jiaxuan Wang, Chenyi Qian, Gerd E Schröder‐Turk, Raj Das, Junye Shi, Qi Tang, Zheda Ning, Wenjue Yi, Chuanwei Li, Jiangping Chen, Zeyao Chen, Binbin Yu, Jian LU, Jianfeng Gu, Ma Qian   +16 more
wiley   +1 more source

Angular Momentum Transport by Internal Gravity Waves across Age

The Astrophysical Journal Letters
We present 2D numerical simulations of convection and waves in a 7 M _⊙ star across stellar ages ranging from zero age to terminal age main sequence. We show that waves efficiently transport angular momentum across the stellar radiative envelope at young
T. M. Rogers, R. P. Ratnasingam
doaj   +1 more source

Canonical Models of Geophysical and Astrophysical Flows: Turbulent Convection Experiments in Liquid Metals

Metals, 2015
Planets and stars are often capable of generating their own magnetic fields. This occurs through dynamo processes occurring via turbulent convective stirring of their respective molten metal-rich cores and plasma-based convection zones.
Adolfo Ribeiro, Guillaume Fabre, Jean-Luc Guermond, Jonathan M. Aurnou   +3 more
doaj   +1 more source