Length dependence of heat conduction in (an)harmonic chains with asymmetries or long range interparticle interactions

2015 ◽  
Vol 423 ◽  
pp. 51-60 ◽  
Author(s):  
Ricardo R. Ávila ◽  
Emmanuel Pereira ◽  
Daniel L. Teixeira
Keyword(s):  
Heat Conduction ◽  
Long Range ◽  
Interparticle Interactions ◽  
Length Dependence

scholarly journals Delocalized excitons and interaction effects in extremely dilute thermal ensembles

2019 ◽  
Vol 21 (5) ◽  
pp. 2276-2282 ◽  
Author(s):  
Lukas Bruder ◽  
Alexander Eisfeld ◽  
Ulrich Bangert ◽  
Marcel Binz ◽  
Max Jakob ◽  
...  
Keyword(s):  
Long Range ◽  
Interaction Effects ◽  
Femtosecond Spectroscopy ◽  
Atomic Ensembles ◽  
Interparticle Interactions ◽  
Highly Sensitive

Long-range interparticle interactions are revealed in extremely dilute thermal atomic ensembles using highly sensitive nonlinear femtosecond spectroscopy.

Anharmonicity Dependent Heat Conduction in One-Dimensional Lattices

2013 ◽  
Vol 209 ◽  
pp. 129-132 ◽  
Author(s):  
Shreya Shah ◽  
Tejal N. Shah ◽  
P.N. Gajjar
Keyword(s):  
Thermal Conductivity ◽  
Numerical Simulation ◽  
Heat Flux ◽  
Heat Conduction ◽  
Temperature Gradient ◽  
Temperature Profile ◽  
Chain Length ◽  
Interparticle Interactions ◽  
One Dimensional ◽  
Harmonic Chain

The temperature profile, heat flux and thermal conductivity are investigated for the chain length of 67 one-dimensional (1-D) oscillators. FPU-β and FK models are used for interparticle interactions and substrate interactions, respectively. As harmonic chain does not produce temperature gradient along the chain, it is required to introduce anharmonicity in the numerical simulation. The anharmonicity dependent temperature profile, thermal conductivity and heat flux are simulated for different strength of anharmonicity β = 0, 0.1, 0.3, 0.5, 0.7, 0.9 and 1. It is concluded that heat flux obeys J = 0.3947 e0.553β with R2 = 0.9319 and thermal conductivity obeys κ = 0.0276 e0.5559β with R2 = 0.9319.

Molecular Dynamics Simulations of Diffusive-Ballistic Heat Conduction in Carbon Nanotubes

2007 ◽  
Vol 1022 ◽  
Author(s):  
Junichiro Shiomi ◽  
Shigeo Maruyama
Keyword(s):  
Thermal Conductivity ◽  
Carbon Nanotubes ◽  
Molecular Dynamics ◽  
Heat Conduction ◽  
Md Simulations ◽  
Gradual Transition ◽  
Length Dependence ◽  
Conductivity Profile ◽  
Non Equilibrium Molecular Dynamics ◽  
Dynamics Simulations

AbstractHeat conduction of finite-length single-walled carbon nanotubes (SWNTs) has been studied by means of non-equilibrium molecular dynamics (MD) simulations. The length-dependence of the thermal conductivity was quantified for a range of nanotube-lengths at room temperature. The length dependence of thermal conductivity exhibits a gradual transition from nearly pure ballistic heat conduction to diffusive-ballistic heat conduction. The results show that the thermal conductivity profile does not converge even beyond a micrometer nanotube-length. Furthermore, the diameter dependence suggests that the phonon diffusion is reduced with the diameter.

Growth of long-range correlations in a transition between heat conduction and convection

1995 ◽  
Vol 52 (2) ◽  
pp. 1601-1605 ◽  
Author(s):  
Tadashi Watanabe ◽  
Hideo Kaburaki ◽  
Masahiko Machida ◽  
Mitsuo Yokokawa
Keyword(s):  
Heat Conduction ◽  
Long Range ◽  
Long Range Correlations ◽  
Heat Conduction And Convection

Kinks in the Frenkel-Kontorova model with long-range interparticle interactions

1990 ◽  
Vol 41 (10) ◽  
pp. 7118-7138 ◽  
Author(s):  
O. M. Braun ◽  
Yu. S. Kivshar ◽  
I. I. Zelenskaya
Keyword(s):  
Long Range ◽  
Interparticle Interactions ◽  
Kontorova Model

scholarly journals Heat conduction and long-range spatial correlation in 1D models

2004 ◽  
Vol 37 (46) ◽  
pp. 11123-11133
Author(s):  
Xin Zhou ◽  
Mitsumasa Iwamoto
Keyword(s):  
Heat Conduction ◽  
Spatial Correlation ◽  
Long Range
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