Secondary heat flow between confocal ellipses—An application of extended thermodynamics

✍ Scribed by Elvira Barbera; Ingo Müller

• Book ID: 104024135
• Publisher: Elsevier Science
• Year: 2008
• Tongue: English
• Weight: 841 KB
• Volume: 153
• Category: Article
• ISSN: 0377-0257
• DOI: 10.1016/j.jnnfm.2007.12.008

✦ Synopsis

Much as non-Newtonian fluids exhibit secondary flows in elliptic pipes, rarefied gases exhibit secondary heat flows between elliptical cylinders. The phenomenon may be called non-Fourierian, because it is not covered by Fourier's law of heat conduction. The effect is demonstrated in the paper by exploiting the 13-moment theory of gases. Apart from secondary heat flows the theory predicts shear stresses balanced by gradients of the heat flux, and the need for a distinction of the kinetic and the thermodynamic temperature.