par Holian, Brad Lee;Mareschal, Michel 
Référence Physical review. E, Statistical, nonlinear, and soft matter physics, 82, 2, 026707
Publication Publié, 2010-08
Référence Physical review. E, Statistical, nonlinear, and soft matter physics, 82, 2, 026707
Publication Publié, 2010-08
Article révisé par les pairs
| Résumé : | We present an equation for the heat-flux vector that goes beyond Fourier's Law of heat conduction, in order to model shockwave propagation in gases. Our approach is motivated by the observation of a disequilibrium among the three components of temperature, namely, the difference between the temperature component in the direction of a planar shock wave, versus those in the transverse directions. This difference is most prominent near the shock front. We test our heat-flow equation for the case of strong shock waves in the ideal gas, which has been studied in the past and compared to Navier-Stokes solutions. The new heat-flow treatment improves the agreement with nonequilibrium molecular-dynamics simulations of hard spheres under strong shockwave conditions. © 2010 The American Physical Society. |
