Abstract
We conducted numerical simulations of heat conduction in one-dimensional (1D) nonlinear lattices to reveal the mechanism of thermal rectification of asymmetrically-defective materials. A decreased spring constant simulates the defective lattice and the obtained temperature profile suggests a thermal resistance existing at the interface of two linked segments with different spring constants. Our numerical results suggest that the thermal rectification of two-segment system is dependent on the spring constant and temperature gradient. Introducing the estimated phonon band, most of the rectification mechanisms are clearly explained and performance limit as a thermal rectifier is found for the defective/pristine materials.
| Original language | English |
|---|---|
| Pages (from-to) | 27-32 |
| Number of pages | 6 |
| Journal | Journal of Mechanical Science and Technology |
| Volume | 25 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - Jan 1 2011 |
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All Science Journal Classification (ASJC) codes
- Mechanical Engineering
- Mechanics of Materials
Cite this
Thermal rectification of asymmetrically-defective materials. / Hayashi, Hiroyuki; Ito, Yohei; Takahashi, Koji.
In: Journal of Mechanical Science and Technology, Vol. 25, No. 1, 01.01.2011, p. 27-32.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Thermal rectification of asymmetrically-defective materials
AU - Hayashi, Hiroyuki
AU - Ito, Yohei
AU - Takahashi, Koji
PY - 2011/1/1
Y1 - 2011/1/1
N2 - We conducted numerical simulations of heat conduction in one-dimensional (1D) nonlinear lattices to reveal the mechanism of thermal rectification of asymmetrically-defective materials. A decreased spring constant simulates the defective lattice and the obtained temperature profile suggests a thermal resistance existing at the interface of two linked segments with different spring constants. Our numerical results suggest that the thermal rectification of two-segment system is dependent on the spring constant and temperature gradient. Introducing the estimated phonon band, most of the rectification mechanisms are clearly explained and performance limit as a thermal rectifier is found for the defective/pristine materials.
AB - We conducted numerical simulations of heat conduction in one-dimensional (1D) nonlinear lattices to reveal the mechanism of thermal rectification of asymmetrically-defective materials. A decreased spring constant simulates the defective lattice and the obtained temperature profile suggests a thermal resistance existing at the interface of two linked segments with different spring constants. Our numerical results suggest that the thermal rectification of two-segment system is dependent on the spring constant and temperature gradient. Introducing the estimated phonon band, most of the rectification mechanisms are clearly explained and performance limit as a thermal rectifier is found for the defective/pristine materials.
UR - http://www.scopus.com/inward/record.url?scp=79952602271&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=79952602271&partnerID=8YFLogxK
U2 - 10.1007/s12206-010-1008-x
DO - 10.1007/s12206-010-1008-x
M3 - Article
AN - SCOPUS:79952602271
VL - 25
SP - 27
EP - 32
JO - Journal of Mechanical Science and Technology
JF - Journal of Mechanical Science and Technology
SN - 1738-494X
IS - 1
ER -