Thermal diffusivity of electrical insulators at high temperatures: Evidence for diffusion of bulk phonon-polaritons at infrared frequencies augmenting phonon heat conduction

2014 ◽  
Vol 115 (16) ◽  
pp. 163517 ◽  
Author(s):  
Anne M. Hofmeister ◽  
Jianjun Dong ◽  
Joy M. Branlund
Keyword(s):  
Heat Conduction ◽  
Thermal Diffusivity ◽  
High Temperatures ◽  
Bulk Phonon ◽  
Phonon Polaritons ◽  
Infrared Frequencies

A new procedure for measuring the thermal diffusivity of non-metallic melts at high temperatures

1996 ◽  
Vol 67 (8) ◽  
pp. 314-319 ◽  
Author(s):  
Hans Adolf Friedrichs ◽  
Leonid Wladimirowitsch Ronkow ◽  
Yongmao Zhou
Keyword(s):  
Thermal Diffusivity ◽  
High Temperatures ◽  
Metallic Melts

scholarly journals Fractional Heat Conduction Models and Thermal Diffusivity Determination

2015 ◽  
Vol 2015 ◽  
pp. 1-9 ◽  
Author(s):  
Monika Žecová ◽  
Ján Terpák
Keyword(s):  
Heat Conduction ◽  
Thermal Diffusivity ◽  
Numerical Methods ◽  
Fractional Order ◽  
Experimental Verification ◽  
Heat Conduction Equation ◽  
Historical Overview ◽  
One Dimensional ◽  
The One ◽  
Fractional Heat Conduction

The contribution deals with the fractional heat conduction models and their use for determining thermal diffusivity. A brief historical overview of the authors who have dealt with the heat conduction equation is described in the introduction of the paper. The one-dimensional heat conduction models with using integer- and fractional-order derivatives are listed. Analytical and numerical methods of solution of the heat conduction models with using integer- and fractional-order derivatives are described. Individual methods have been implemented in MATLAB and the examples of simulations are listed. The proposal and experimental verification of the methods for determining thermal diffusivity using half-order derivative of temperature by time are listed at the conclusion of the paper.

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