Simulation of nanofluid natural convection based on single-particle hydrodynamics in energy-conserving dissipative particle dynamics(eDPD)  

作　　者：Wei LU Shuo CHEN Zhiyuan YU Jiayi ZHAO 

机构地区：[1]School of Aerospace Engineering and Applied Mechanics,Tongji University,Shanghai 200092,China [2]Shanghai Key Laboratory of Vehicle Aerodynamics and Vehicle Thermal Management Systems,Tongji University,Shanghai 201804,China [3]School of Energy and Power Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China

出　　处：《Applied Mathematics and Mechanics(English Edition)》2024年第8期1429-1446,共18页应用数学和力学（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Nos.11872283 and 2002212);the Sailing Program of Shanghai,China(No.20YF1432800)。

摘　　要：In the present study,the nanofliud natural convection is investigated by the energy-conserving dissipative particle dynamics(eDPD)method,where the nanoparticles are considered at the single-particle level.The thermal expansion coefficientβand the viscosityμof the simulated system containing nanoparticles are calculated and found to be in close alignment with the previous simulation results.The single-particle hydrodynamics in e DPD enables simulations of nanofluid natural convection with higher Rayleigh numbers and greater nanoparticle volume fractions.Additionally,this approach is utilized to simulate the nanoparticle distribution during the enhanced heat transfer process in the nanofluid natural convection.The localized aggregation of nanoparticles enhances the heat transfer performance of the nanofluid under specific Rayleigh numbers and nanoparticles volume fractions.

关 键 词：single-particle hydrodynamics energy-conserving dissipative particle dynamics(eDPD) nanoparticle NANOFLUID heat transfer 

分 类 号：O351.2[理学—流体力学]