On the th ermal conductivity in methan e-propane binary mixture in nanochannels: A n on-equilibrium molecular dy namics approach

When a fluid mixture is placed in a thermal gradient, one observes a separation of the components in the mixture. This separation leads to a mole fraction gradient parallel to the thermal gradient. The phenomenological description of this situation can be made by irreversible thermodynamics [۱] , OTV(۴۱ – ۴۲) Ji=-۱۱۹۷۲-L۱۱-I VT , V(U۱ - ۴۲) Ja = -Lqq ۷۲ – ۴۹۱۷ Where Jqand J۱ are the heat flux and diffusive molar flux of component ۱, respectively, T is the temperature, u the chemical potential and Laß are the phenomenological coefficients. Throughout recent two decades, several authors have attempted to compute transport coefficients using molecular dynamics methods in multi-component systems (for review see [۱]), whereas few works on thermal transport phenomena in confined media, the highly inhomogeneity of these system make such studies more difficult. In this work we have studied thermal conductivity in methane-propane binary mixtures in ۸۰ch, channel by simulation.

کلیدواژه ها:

Alkan e mixture ، Nanochanne l ، Non-Equilibrium M D ، Thermal conductivity ،