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2000 Fiscal Year Final Research Report Summary

Thermophysical and Elastic Wave Theory Approach to Thermal Contact Resistance of Solid Surfaces

Research Project

Project/Area Number 11450086
Research Category

Grant-in-Aid for Scientific Research (B).

Allocation TypeSingle-year Grants
Section一般
Research Field Thermal engineering
Research InstitutionKYOTO UNIVERSITY

Principal Investigator

MAKINO Toshiro  Graduate School of Engineering, KYOTO UNIVERSITY Professor, 工学研究科, 教授 (30111941)

Co-Investigator(Kenkyū-buntansha) HIDENOBU Wakabayashi  Graduate School of Engineering, KYOTO UNIVERSITY Instructor, 工学研究科, 助手 (00273467)
MATSUMOTO Mitsuhiro  Graduate School of Engineering, KYOTO UNIVERSITY Associate Professor, 工学研究科, 助教授 (10229578)
Project Period (FY) 1999 – 2000
KeywordsThermophysical Properties / Heat Conduction / Thermal Contact Resistance / In-process Measurement / Heat Flow / Surface Microstructure / Ultrasonic Wave / Molecular Dynamics
Research Abstract

Thermal contact resistance of solid surfaces of materials is one of the most important factors in thermal design of industrial devices in thermal engineering. It is necessary to develop a fundamental study to clarify physical mechanism of thermal contact resistance on bases of thermophysical and elastic wave theory. At the same time, it is also necessary to study an in-process technique to diagnose/ evaluate thermal contact resistance of solid surfaces, which changes from time to time. In this study, we performed the following three studies from this point of view.
First, we pursued an in-situ technique for diagnosing the thermal contact resistance on a solid-solid interface from outside. Since microstructure of the contact interface changes with time depending on applied pressure and deformation in crystal structure, it is important to develop an method for evaluating contact states. In this study, we applied an ultrasonic wave technique for crack-search to our thermal contact resistan … More ce problem. We made macroscopic experiments on ultrasonic wave reflection on a metal-metal contact interface and heat transmission through the interface. Second, we investigated ultrasonic wave reflection and transmission characteristics at an interface of media by an elastic wave theory. That is, we described propagation and distinction of pulse ultrasonic/ elastic wave or wave packet, interface reflection, interface transmission and diffraction phenomena of ultrasonic wave by an elastic wave theory and completed the inversion analysis system. We made basic experiments on ultrasonic wave reflection and transmission characteristics on smooth and systematically rough surfaces, and confirmed the ability of the analysis system. Third, we made a microscopic study of molecular dynamics on inhomogeneous thermal energy flow through a finite-size atom column. Such a study must be an elementary unit of a study on micromechanism of thermal contact resistance. It was demonstrated that in a micro-channel of atoms of a finite size, where influence of the surface of the channel is effective, thermal energy does not flow homogeneously but flows more in the center part of the channel and that it is one of the main factors of thermal contact resistance. Less

  • Research Products

    (12 results)

All Other

All Publications (12 results)

  • [Publications] 若林英信: "金属・金属接触面における超音波反射とその面をよぎる熱通過"日本伝熱シンポジウム講演論文集. 第36回. 227-228 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Wakabayashi,H.: "Molecular Dynamics Simulation on Inhomogenous Thermal Energy Flow through Finite-size Atom Column Systems"Thermal Science and Engineering. vol.7・no.5. 21-29 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 松本充弘: "固体界面における熱伝導の分子シミュレーション"日本熱物性シンポジウム講演論文集. 第20回. 149-152 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 松本充弘: "固体熱伝導の分子動力学とフォノン解析"日本伝熱シンポジウム講演論文集. 第37回. 975-976 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 松本充弘: "固体界面での熱抵抗の分子シミュレーション"日本熱物性シンポジウム講演論文集. 第21回. 250-252 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 松本充弘: "格子振動解析による固体熱伝導の研究"日本伝熱シンポジウム講演論文集. 第38回(発表予定). (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Ogumo, S., Tange, M., Wakabayashi, H., Makino, T.: "Ultrasonic Wave Reflection on a Metal-Metal Interface and Heat Transmission through the Interface"Proc., 36th Nat'l Heat Transf.Symp.Jpn.. 227-228 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Wakabayashi, H., Suzuki, K., Matsumoto, M., Makino, T.: "Molecular Dynamics Simulation on Inhomogeneous Thermal Energy Flow through Finite-size Atom Column Systems"Thermal Science and Engineering. vol.7, no.5. 21-29 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Matsumoto, M., Wakabayashi, H., Makino, T.: "Molecular Simulation of Heat Conduction at Solid-Solid Interface"Proc., 20th Jpn. Symp. Thermophys. Props.. 149-152 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Matsumoto, M., Komiyama, M., Wakabayashi, H., Makino, T.: "MD Simulation and Phonon Analysis for Heat Conduction in Solids"Proc., 37th Nat'l Heat Transf.Symp.Jpn.. 975-976 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Matsumoto, M., Komiyama, M., Wakabayashi, H., Makino, T.: "Molecular Simulation of Thermal Resistance at Solid-Solid Interface"Proc., 21th Jpn. Symp. Thermophys. Props.. 250-252 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Matsumoto, M., Yamada, G., Oguchi, K., Wakabayashi, H., Makino, T.: "Lattice Vibration Analysis for Solid Heat Conductance"Proc., 38th Nat'l Heat Transf. Symp. Jpn.. (to be published). (2001)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2002-03-26  

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