Abstract
We have performed a nonequilibrium molecular-dynamics (NEMD) computation of thermal conductivity for a simple dense fluid near the triple point using the differential NEMD method and a translationally invariant algorithm recently proposed by Evans. We have simulated a set of thermal gradients in the range 75.8 K/cm to 2.54 \ifmmode\times\else\texttimes\fi{} ${10}^{8}$ K/cm. Our main conclusion concerns the response of the energy current at $\stackrel{\ensuremath{\rightarrow}}{\mathrm{K}}=\stackrel{\ensuremath{\rightarrow}}{0}$, which is linear in the range indicated. To check the efficiency of the present NEMD technique we have compared the nonequilibrium results with our own and Levesque's equilibrium Green-Kubo results. The agreement found is remarkable.
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