Abstract In this paper, convective heat transfer of argon in a nanochannel is investigated by molecular dynamics method. Simulations are performed by LAMMPS code and the effects of wall material, wall roughness and nanochannel size on Nusselt number are studied. To study the wall material effects on convective heat transfer, argon, copper and platinum walls are considered. Results show that convective heat transfer is affected by the wall material and the Nusselt number in the nanochannel with copper walls is higher than the other materials. Also, results illustrate that by increasing the nanochannel size, the Nusselt number increases. Finally, the presence of roughness increases the velocity and Nusselt number in the nanochannel.

中文翻译：

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通过分子动力学模拟研究壁面效应对纳米通道中对流传热的影响

摘要 本文采用分子动力学方法研究了纳米通道中氩气的对流传热。用 LAMMPS 代码进行模拟，研究壁材料、壁粗糙度和纳米通道尺寸对努塞尔数的影响。为了研究壁材料对对流传热的影响，考虑了氩、铜和铂壁。结果表明，对流传热受壁材料的影响，具有铜壁的纳米通道中的努塞尔数高于其他材料。此外，结果表明，通过增加纳米通道尺寸，努塞尔数增加。最后，粗糙度的存在增加了纳米通道中的速度和努塞尔数。