Energy Transport in Lennard-Jones Particle System(The 50th Anniversary of the Alder Transition -Recent Progress on Computational Statistical Physics-)

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概要

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• Energy transport phenomena in Lennard-Jones particle systems are studied using nonequilibrium simulation with molecular dynamics method. Thermal conductivity in finite size system κ(L) converges with a simple 1/√<L> in gas, liquid and solid phases. Lennard-Jones particle system reproduced normal thermal conduction which is described by Fourier's heat law. The κ(L) decreases by 10% from the macroscopic thermal conductivity at L〜1100 in gas phase, L〜80 in liquid phase, and L〜150 in solid phase. To describe and understand the microscopic origin of the nonequilibrium thermal conduction, we study the microscopic energy flux carried by a single particle j and its distribution. When steady heat flux flows in the system, the distribution of j is distorted along the direction of the energy flux. The nonequilibrium distribution is described by the equilibrium distributions with different two temperatures. When the system is in nonlinear response region, the distribution has a form different from the one of linear response region even though the global temperature profile reproduces a linear form.

• 理論物理学刊行会の論文
• 2009-04-24

著者

• YUKAWA Satoshi

  Department of Earth and Space Science, Osaka University

• OGUSHI Fumiko

  The Theoretical Biochemistry Laboratory, RIKEN Advanced Science Institute

• SHIMADA Takashi

  Department of Applied Physics, The University of Tokyo

• ITO Nobuyasu

  Department of Applied Physics, The University of Tokyo

• Shimada T

  Department Of Applied Physics The University Of Tokyo

• OGUSHI Fumiko

  Department of Physics and Electronics, Osaka Prefecture University

• Ito Nobuyasu

  Department Of Applied Physics The University Of Tokyo

• Ito Nobuyasu

  Department Of Applied Physics Faculty Of Engineering The University Of Tokyo

• Ogushi Fumiko

  The Theoretical Biochemistry Laboratory Riken Advanced Science Institute

• Ogushi Fumiko

  Department Of Applied Physics School Of Engineering The University Of Tokyo

• Yukawa S

  Department Of Applied Physics University Of Tokyo

• Yukawa Satoshi

  Department Of Applied Physics Graduate School Of Engineering The University Of Tokyo:department Of E

• Shimada Takashi

  Department Of Applied Physics School Of Engineering The University Of Tokyo

• OGUSHI Fumiko

  Department of Applied Physics, Graduate School of Engineering, The University of Tokyo

• Yukawa Satoshi

  Department of Earth and Space Science, Graduate School of Science, Osaka University

• Shimada Takashi

  Department of Applied chemistry, Kinki University School of Science and Technology

• Ito Nobuyasu

  Department of applied Physics

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