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We consider the steady heat conduction problem within a thermal isotropic and homogeneous infinite strip composite reinforced by uniformly and randomly distributed non-overlapping carbon nanotubes (CNTs) and containing voids. We treat the…

数值分析 · 数学 2022-01-04 Mohamed Nasser , El Mostafa Kalmoun , Vladimir Mityushev , Natalia Rylko

Carbon nanotubes (CNTs) are promising candidates to improve the thermal conductivity of nano-composites. The main obstacle to these applications is the extremely high thermal boundary (Kapitza) resistance between the CNTs and their matrix.…

介观与纳米尺度物理 · 物理学 2024-04-11 K. G. S. H. Gunawardana , Kieran Mullen

The heat flux autocorrelation functions of carbon nanotubes (CNTs) with different radius and lengths is calculated using equilibrium molecular dynamics. The thermal conductance of CNTs is also calculated using the Green-Kubo relation from…

材料科学 · 物理学 2009-11-10 Zhenhua Yao , Jian-Sheng Wang , Baowen Li , Gui-Rong Liu

A new framework that can be utilized for the electrodynamics of carbon nanotubes (CNTs) with non-local surface conductivity (spatial dispersion) is presented. The model of non-local conductivity is developed on the basis of the Kubo…

介观与纳米尺度物理 · 物理学 2025-09-22 Tomer Berghaus , Touvia Miloh , Oded Gottlieb , Gregory Ya. Slepyan

This paper investigates the numerical modeling of a time-dependent heat transmission problem by the convolution quadrature boundary element method. It introduces the latest theoretical development into the error analysis of the numerical…

数值分析 · 数学 2017-11-08 Tianyu Qiu , Alexander Rieder , Francisco-Javier Sayas , Shougui Zhang

An analytic solution to a stationary heat conduction problem in 2D unbounded doubly periodic composite materials with temperature dependent conductivities of their components is given. Corresponding nonlinear boundary value problem is…

偏微分方程分析 · 数学 2014-04-01 David Kapanadze , Gennady Mishuris , Ekaterina Pesetskaya

In this paper, a boundary integral method is used to solve an inverse linear heat conduction problem in two-dimensional bounded domain. An inverse problem of measuring the heat flux from partial (on part of the boundary) dynamic boundary…

数学物理 · 物理学 2008-05-06 Daveau Christian , Khelifi Abdessatar , Shamma M. Nour

We examine the transient scattered and transmitted fields generated when an incident electromagnetic wave impinges on a dielectric scatterer or a coated conductor embedded in an infinite space. By applying a boundary-field equation method,…

偏微分方程分析 · 数学 2024-12-19 George C. Hsiao , Tonatiuh Sánchez-Vizuet , Wolfgang L. Wendland

The atomistic simulations of carbon nanotube (CNT) - carbon reinforced composite material are reported. The studied composite samples were obtained by impregnating certain amounts of CNTs (3,3) and (6,6) into pristine graphite matrix. The…

材料科学 · 物理学 2011-03-14 Vitaly Chaban

We present an effective thermal open boundary condition for convective heat transfer problems on domains involving outflow/open boundaries. This boundary condition is energy-stable, and it ensures that the contribution of the open boundary…

流体动力学 · 物理学 2019-10-23 X. Liu , Z. Xie , S. Dong

We consider the inverse problem of reconstructing the interior boundary curve of a doubly connected domain from the knowledge of the temperature and the thermal flux on the exterior boundary curve. The use of the Laguerre transform in time…

数值分析 · 数学 2024-02-23 Roman Chapko , Leonidas Mindrinos

In this work, we investigate the estimation of the transient mold-slab heat flux in continuous casting molds given some thermocouples measurements in the mold plates. Mathematically, we can see this problem as the estimation of a Neumann…

Hot electrons injection in carbon nanotubes (CNTs ) where in addition to applied dc field ($\mathbf{E}$), there exist simultaneously a quasi-static ac electric field (i.e. when the frequency $\omega$ of ac field is much less than the…

介观与纳米尺度物理 · 物理学 2016-04-20 M. Amekpewu , S. Y. Mensah , R. Musah , N. G. Mensah , S. S. Abukari , K. A. Dompreh

We proposed a new way, adding intertube atoms, to enhance interfacial thermal conductance (ITC) between SiC-carbon nanotube (CNT) array structure. Non-equilibrium molecular dynamics method was used to study the ITC. The results show that…

介观与纳米尺度物理 · 物理学 2016-06-10 Chengcheng Deng , Xiaoxiang Yu , Xiaoming Huang , Nuo Yang

We discuss the initial boundary value problem for a heat equation in a domain surrounded by a layer. The main features of this problem are twofold: on one hand, the layer is thin compared to the scale of the domain, and on the other hand,…

偏微分方程分析 · 数学 2025-05-27 Xingri Geng

This paper focuses on the numerical solution of a dual-phase-lag heat conduction equation on a space unbounded domain. First, based on the Laplace transform and the Pad\'e approximation, a high-order local artificial boundary condition is…

数值分析 · 数学 2025-11-10 Weiping Bu , Zhengfang Xie , Yushi Wang

Order(N) Tight-Binding Molecular Dynamics (TBMD) simulations are performed to investigate the thermal stability of (10,10) metallic Single-Walled Carbon Nanotubes (SWCNT). Periodic boundary conditions (PBC) are applied in axial direction.…

材料科学 · 物理学 2009-11-13 G. Dereli , B. Sungu , C. Ozdogan

We propose a boundary integral formulation for the dynamic problem of electromagnetic scattering and transmission by homogeneous dielectric obstacles. In the spirit of Costabel and Stephan, we use the transmission conditions to reduce the…

数值分析 · 数学 2025-05-20 Tonatiuh Sánchez-Vizuet

We investigate thermal energy coupling between carbon nanotubes (CNTs) and SiO2 with non-equilibrium molecular dynamics simulations. The thermal boundary conductance (g) per unit CNT length is found to scale proportionally with the strength…

介观与纳米尺度物理 · 物理学 2010-05-18 Zhun-Yong Ong , Eric Pop

Temperature dependence of electrical resistance of single-walled carbon nanotube (SWCNTs)/epoxy nanocomposites, which is characterized by a temperature coefficient of resistance (TCR), is experimentally investigated. In the existing…

应用物理 · 物理学 2025-03-19 Milad Jafarypouria , Sergey Abaimov
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