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Tensor Temperature and Shockwave Stability in a Strong Two-Dimensional Shockwave | | Wm. G. Hoover
; Carol G. Hoover
; | | Date: |
12 May 2009 | | Abstract: | The anisotropicity of temperature is studied in a strong two-dimensional
shockwave, simulated with conventional molecular dynamics. Several forms of the
kinetic temperature are considered, corresponding to different choices for the
local instantaneous stream velocity. A local particle-based definition omitting
any "self" contribution to the stream velocity gives the best results. The
configurational temperature is not useful for this shockwave problem,
Configurational temperature is subject to a shear instability and can give
negative temperatures in the vicinity of the shock front. The decay of
sinusoidal shockfront perturbations shows that strong two-dimensional planar
shockwaves are stable to such perturbations. | | Source: | arXiv, 0905.1913 | | Services: | Forum | Review | PDF | Favorites | |
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