Simulational Study on Dimensionality Dependence of Heat Conduction : Fluids, Plasmas, and Electric Discharges

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概要

• 論文の詳細を見る

• Heat conduction phenomena are studied theoretically using computer simulation. The systems are crystal with nonlinear interaction, and fluid of hard-core particles. Quasi-one-dimensional systems of the size L_x × L_y × L_z (L_z ≫ L_x, L_y) are simulated. Heat baths are put in both ends: one has a higher temperature than the other. In the case of the crystal, the interaction potential V has a fourth-order nonlinear term in addition to the harmonic term, and the Nose-Hoover method is used for the heat baths. In the case of the fluid, the stochastic boundary condition is charged, which performs the function of the heat baths. Fourier-type heat conduction is reproduced in both crystal and fluid models in a three-dimensional system, but it is not observed in lower-dimensional systems. The autocorrelation function of heat flux is also observed and long-time tails of the form 〜 t^<-d/2>, where d denotes the dimensionality of the system, are confirmed.

• 社団法人日本物理学会の論文
• 2000-10-15

著者

• YUKAWA Satoshi

  Department of Earth and Space Science, Osaka University

• 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

• MURAKAMI Teruyoshi

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

• SAITO Keiji

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

• Ito Nobuyasu

  Department Of Applied Physics The University Of Tokyo

• Ito Nobuyasu

  Department Of Applied Physics Faculty 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

• Murakami T

  Department Of Applied Physics School Of Engineering The University Of Tokyo

• Saito Keiji

  Department Of Applied Physics School Of Engineering University Of Tokyo

• Saito Keiji

  Department Of Applied Physics Graduate School Of Engineering University Of Tokyo

• Shimada Takashi

  Department Of Applied Physics School Of Engineering The University Of Tokyo

• Shimada Takashi

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

• Ito Nobuyasu

  Department of applied Physics

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