Entropy analysis in an Au-Cr two-layer assembly during laser shortpulse heating

Bekir Sami Yilbas

doi:10.1080/10407780307328

Entropy analysis in an Au-Cr two-layer assembly during laser shortpulse heating

Bekir Sami Yilbas^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

11 Scopus citations

Abstract

Entropy analysis in solids during laser shortpulse heating gives insight into the nonequilibrium energy transport process taking place in electron and lattice subsystems. In this study, laser picosecond heating of an Au-Cr two-layer assembly is considered. Entropy production due to nonequilibrium energy transport in the region irradiated by a laser beam is formulated. Thermomechanical coupling is accommodated in the analysis. The governing equations of energy transport and displacement field are solved numerically. The gold layer (0.3 μm) is situated at the top of the chromium base material It is found that the lattice site temperature increases sharply in the chromium layer next to the Au-Cr interface. The coupling of electron lattice subsystems results in higher volumetric entropy production than that produced in lattice and electron subsystems.

Original language	English
Pages (from-to)	179-199
Number of pages	21
Journal	Numerical Heat Transfer; Part A: Applications
Volume	43
Issue number	2
DOIs	https://doi.org/10.1080/10407780307328
State	Published - 2 Feb 2003

Bibliographical note

Funding Information:
Received 5 February 2002; accepted 4 May 2002. The author acknowledges the support of King Fahd University of Petroleum and Minerals, Dhahran, Saudi Arabia, for this work. Address correspondence to Professor B. S. Yilbas, Dept. of Mechanical Engineering, King Fahd University of Petroleum and Minerals, KFUPM, P.O. Box 1913, Dhahran, 31261, Saudi Arabia. E-mail: [email protected]

ASJC Scopus subject areas

Numerical Analysis
Condensed Matter Physics

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10.1080/10407780307328

Cite this

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title = "Entropy analysis in an Au-Cr two-layer assembly during laser shortpulse heating",

abstract = "Entropy analysis in solids during laser shortpulse heating gives insight into the nonequilibrium energy transport process taking place in electron and lattice subsystems. In this study, laser picosecond heating of an Au-Cr two-layer assembly is considered. Entropy production due to nonequilibrium energy transport in the region irradiated by a laser beam is formulated. Thermomechanical coupling is accommodated in the analysis. The governing equations of energy transport and displacement field are solved numerically. The gold layer (0.3 μm) is situated at the top of the chromium base material It is found that the lattice site temperature increases sharply in the chromium layer next to the Au-Cr interface. The coupling of electron lattice subsystems results in higher volumetric entropy production than that produced in lattice and electron subsystems.",

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N1 - Funding Information: Received 5 February 2002; accepted 4 May 2002. The author acknowledges the support of King Fahd University of Petroleum and Minerals, Dhahran, Saudi Arabia, for this work. Address correspondence to Professor B. S. Yilbas, Dept. of Mechanical Engineering, King Fahd University of Petroleum and Minerals, KFUPM, P.O. Box 1913, Dhahran, 31261, Saudi Arabia. E-mail: [email protected]

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N2 - Entropy analysis in solids during laser shortpulse heating gives insight into the nonequilibrium energy transport process taking place in electron and lattice subsystems. In this study, laser picosecond heating of an Au-Cr two-layer assembly is considered. Entropy production due to nonequilibrium energy transport in the region irradiated by a laser beam is formulated. Thermomechanical coupling is accommodated in the analysis. The governing equations of energy transport and displacement field are solved numerically. The gold layer (0.3 μm) is situated at the top of the chromium base material It is found that the lattice site temperature increases sharply in the chromium layer next to the Au-Cr interface. The coupling of electron lattice subsystems results in higher volumetric entropy production than that produced in lattice and electron subsystems.

AB - Entropy analysis in solids during laser shortpulse heating gives insight into the nonequilibrium energy transport process taking place in electron and lattice subsystems. In this study, laser picosecond heating of an Au-Cr two-layer assembly is considered. Entropy production due to nonequilibrium energy transport in the region irradiated by a laser beam is formulated. Thermomechanical coupling is accommodated in the analysis. The governing equations of energy transport and displacement field are solved numerically. The gold layer (0.3 μm) is situated at the top of the chromium base material It is found that the lattice site temperature increases sharply in the chromium layer next to the Au-Cr interface. The coupling of electron lattice subsystems results in higher volumetric entropy production than that produced in lattice and electron subsystems.

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Entropy analysis in an Au-Cr two-layer assembly during laser shortpulse heating

Abstract

Bibliographical note

ASJC Scopus subject areas

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