The　heat　transfer　through　nanoscale　confined　fluids　under　transversal　temperature　gradients　are　investigated　by　using　nonequilibrium　molecular　dynamics　(NEMD)　simulations.　Due　to　the　asymmetric　adsorption　on　the　heterogeneous　structure,　the　thermal　accommodation　coefficients　and　the　fluid　pressure　for　the　forward　and　backward　directions　are　found　to　be　different　with　each　other,　which　in　turn　results　in　the　thermal　rectification　effect.　By　increasing　the　discrepancy　between　the　left　and　right　solid-fluid　interface　parameters,　the　thermal　rectification　effect　can　be　enhanced.　©　2020,　Science　Press.　All　right　reserved.