Results 1 to 10 of about 523,398 (206)

Heat conduction in deformable Frenkel-Kontorova lattices: thermal conductivity and negative differential thermal resistance [PDF]

Phys. Rev. E 83 (2011)011131, 2011
Heat conduction through the Frenkel-Kontorova (FK) lattices is numerically investigated in the presence of a deformable substrate potential. It is found that the deformation of the substrate potential has a strong influence on heat conduction. The thermal conductivity as a function of the shape parameter is nonmonotonic.
Bambi Hu, Bao-quan Ai, Y. Frenkel
arxiv   +3 more sources

Thermal Conduction and Multiphase Gas in Cluster Cores [PDF]

, 2013
We examine the role of thermal conduction and magnetic fields in cores of galaxy clusters through global simulations of the intracluster medium (ICM). In particular, we study the influence of thermal conduction, both isotropic and anisotropic, on the condensation of multiphase gas in cluster cores. Previous hydrodynamic simulations have shown that cold
McCourt, Michael, Sharma, Prateek, Wagh, Baban   +2 more
arxiv   +3 more sources

Thermal conductivity of micro/nano-porous polymers: Prediction models and applications [PDF]

Front. Phys. 17(2), 23202 (2022), 2021
Micro/nano porous polymeric material is considered a unique industrial material due to its extremely low thermal conductivity, low density, and high surface area. Therefore, it is necessary to establish an accurate thermal conductivity prediction model suiting their applicable conditions and provide a theoretical basis for expanding of their ...
arxiv   +1 more source

Formation and X-ray emission from Hot Bubbles in Planetary Nebulae. I. Hot Bubble formation [PDF]

, 2014
We carry out high resolution two-dimensional radiation-hydrodynamic numerical simulations to study the formation and evolution of hot bubbles inside planetary nebulae (PNe).
Arthur, S. J., Toalá, J. A.
core   +1 more source

Effect of anharmonicity on the thermal conductivity of amorphous silica [PDF]

, 2022
Proper consideration of anharmonicity is important for the calculation of the thermal conductivity. However, how the anharmonicity influences the thermal conduction in amorphous materials is still an open question. In this work, we uncover the role of anharmonicity on the thermal conductivity of amorphous silica (a-SiO2) by comparing the thermal ...
arxiv   +1 more source

Galaxy Motions, Turbulence and Conduction in Clusters of Galaxies [PDF]

, 2010
Unopposed radiative cooling in clusters of galaxies results in excessive mass deposition rates. However, the cool cores of galaxy clusters are continuously heated by thermal conduction and turbulent heat diffusion due to minor mergers or the galaxies ...
Ascasibar, Balbus, Balbus, Balbus, Beck, Benson, Binney, Binney, Birnboim, Biviano, Bogdanovic, Bogdanović, Bregman, Carilli, Cavagnolo, Cho, Cho, Churazov, Churazov, Conroy, Dennis, Dolag, El-Zant, Enßlin, Enßlin, Evrard, Fabian, Faltenbacher, Guo, Guo, Guo, Hernquist, Hoeft, Hwang, Iapichino, Johnstone, Kazantzidis, Kim, Kim, Kim, Kim, Kunz, Lee, Lin, Lufkin, M. Ruszkowski, McCarthy, McNamara, Nagai, Nagai, Narayan, Natarajan, Navarro, Newman, Norman, Parrish, Parrish, Parrish, Parrish, Pfrommer, Quataert, Rebusco, Ruszkowski, Ruszkowski, Ruszkowski, Ruszkowski, Ruszkowski, Ruzmaikin, Ryu, S. Peng Oh, Sakelliou, Sanders, Scannapieco, Schekochihin, Schuecker, Sharma, Sharma, Sharma, Sharma, Shin, Springel, Subramanian, Vazza, Vazza, Vogt, Vogt, Voigt, Voit, Zakamska, ZuHone   +89 more
core   +2 more sources

Cross-Plane Thermal Transport in Layered Materials [PDF]

arXiv, 2023
The cross-plane (across-layers) phonon thermal transport of five diverse, layered semiconductors is investigated by accounting for higher-order four-phonon scattering, phonon renormalization, and multi-channel thermal transport. For materials having relatively large cross-plane thermal conductivity (AlB6, MoS2, and MoSi2N4), phonons contributing to ...
arxiv  

Tunable Thermal Conduction in Graphane Nanoribbons [PDF]

, 2014
Graphane and graphene are both two-dimensional materials but of different bonding configurations, which can result in distinct thermal conduction properties. We simulate thermal conduction in graphane nanoribbons (GANRs) using the nonequilibrium Green's function method.
arxiv   +1 more source

Anisotropic Thermal Conduction in Supernova Remnants: Relevance to Hot Gas Filling Factors in the Magnetized ISM

, 2006
We explore the importance of anisotropic thermal conduction in the evolution of supernova remnants via numerical simulations. The mean temperature of the bubble of hot gas is decreased by a factor of ~3 compared to simulations without thermal conduction,
Arikawa Y., David A. Tilley, Dinshaw S. Balsara, MacDonald J., Royczka M.   +4 more
core   +2 more sources

UO2/BeO interfacial thermal resistance and its effect on fuel thermal conductivity [PDF]

Annals of Nuclear Energy, Volume 154, May 2021, 108102, 2020
UO2/BeO interfacial thermal resistance (ITR) is calculated by diffuse mismatch model (DMM) and the effects of ITR on UO2-BeO thermal conductivity are investigated. ITR predicted by DMM is on the order of 10-9 m2K/W. Using this ITR, UO2-BeO thermal conductivities are calculated by theoretical models and compared with experimental data.
arxiv   +1 more source