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

doi:10.1007/s10483-024-3130-9

Applied Mathematics and Mechanics (English Edition) ›› 2024, Vol. 45 ›› Issue (8): 1429-1446.doi: https://doi.org/10.1007/s10483-024-3130-9

收稿日期:2024-01-26 出版日期:2024-08-03 发布日期:2024-07-31

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

Wei LU¹, Shuo CHEN¹^,²^,*(), Zhiyuan YU¹, Jiayi ZHAO³

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

Received:2024-01-26 Online:2024-08-03 Published:2024-07-31
Contact: Shuo CHEN E-mail:schen_tju@tongji.edu.cn
Supported by:
the National Natural Science Foundation of China(11872283);the National Natural Science Foundation of China(2002212);the Sailing Program of Shanghai, China(20YF1432800);Project supported by the National Natural Science Foundation of China (Nos. 11872283 and 2002212) and the Sailing Program of Shanghai, China (No. 20YF1432800)

摘要/Abstract

Abstract:

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 coefficient β and the viscosity μ of the simulated system containing nanoparticles are calculated and found to be in close alignment with the previous simulation results. The single-particle hydrodynamics in eDPD 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.

Key words: single-particle hydrodynamics, energy-conserving dissipative particle dynamics (eDPD), nanoparticle, nanofluid, heat transfer

中图分类号:

68U01

. [J]. Applied Mathematics and Mechanics (English Edition), 2024, 45(8): 1429-1446.

Wei LU, Shuo CHEN, Zhiyuan YU, Jiayi ZHAO. Simulation of nanofluid natural convection based on single-particle hydrodynamics in energy-conserving dissipative particle dynamics (eDPD)[J]. Applied Mathematics and Mechanics (English Edition), 2024, 45(8): 1429-1446.

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参考文献 46

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

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