Abstract
Longitudinal and volume viscosities of Lennard-Jones fluid, argon–krypton binary mixture and isotopic fluid mixture confined to nanochannels of different widths are calculated by employing theoretical technique based on Green–Kubo formula. A significant enhancement is observed in longitudinal and volume viscosities when width of the nanochannel is less than 10 nm. Effect of mass ratio of two species on longitudinal and volume viscosities is also studied for equimolar isotopic fluid mixture. It is found that enhancement in viscosity is more for larger mass ratios. It is also noted that enhancement in longitudinal and shear viscosities is more than volume viscosity.
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