Propagation of thermal waves in a composite medium with interface thermal boundary resistance

Journal Article · Fri Nov 26 04:00:00 EST 1999 · Numerical Heat Transfer. Part A, Applications

OSTI ID:20005610

Lor, W B; Chu, H S

This article numerically analyzes the hyperbolic heat conduction problem in a two-layer composite medium under an initial temperature pulse emanating from the exterior surface of one layer. Reflection and transmission occur when the initial pulse wave impacts the contact surface of the dissimilar material. An interfacial layer with low conductivity and narrow thickness exists at the interface, which is employed to model the thermal boundary resistance at the contact surface. Analysis results indicate that the interface resistance significantly influences the wave pattern and strength. The presentation of the wave nature in the interfacial layer deforms the initial wave feature and induces secondary wavelets behind the reflected and transmitted wave. In addition, the piecewise secondary wavelets become smooth when the interfacial width is very thin. Also examined herein is the effect of conductivity and thickness width of the interfacial layer coupled with variation of the two-layer properties ratio on the reflection-transmission-combination phenomena.

• Research Organization: National Chiao Tung Univ., Hsinchu (TW)
• OSTI ID: 20005610
• Journal Information: Numerical Heat Transfer. Part A, Applications, Journal Name: Numerical Heat Transfer. Part A, Applications Journal Issue: 7 Vol. 36; ISSN 1040-7782; ISSN NHAAES
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COMPOSITE MATERIALS
INTERFACES
NUMERICAL ANALYSIS
THERMAL CONDUCTIVITY