Molecular Dynamics of Fluid Properties by Normal Oscillations of Solid Wall

Authors

Haijun Dong, School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an 710072, China;
Xiaoqing Lu, School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an 710072, China;
Haopeng Zhang, School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an 710072, China;
Mingming Shan, School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an 710072, China;

Abstract

Abstract: The fluid properties under the condition of the solid wall normal oscillations were studied using the molecular dynamics method. The two dimensional Couette flow model made up of copper wall and argon fluid was built. The fluid state of the near wall was simulated under the different oscillation parameters of solid wall and the corresponding fluid velocity field, the density distribution, the potential energy curves and the friction force were obtained. Then the influence mechanism of the wall oscillations on the frictional drag at liquid-solid interface was investigated. The results indicate that the frictional drag between wall and fluid can be reduced effectively by applying normal oscillations for the solid wall and the drag reduction rate is mainly dependent on the oscillation parameters. Meanwhile, the decrease of fluid density near wall leads to the reduction in frictional drag at liquid-solid interface.

Recommended Citation

Dong, Haijun; Lu, Xiaoqing; Zhang, Haopeng; and Shan, Mingming (2020) "Molecular Dynamics of Fluid Properties by Normal Oscillations of Solid Wall," Journal of System Simulation: Vol. 27: Iss. 8, Article 4.
Available at: https://dc-china-simulation.researchcommons.org/journal/vol27/iss8/4

First Page

1680

Revised Date

2015-06-15

DOI Link

https://doi.org/

Last Page

1686

CLC

O353.1

Recommended Citation

Dong Haijun, Lu Xiaoqing, Zhang Haopeng, Shan Mingming. Molecular Dynamics of Fluid Properties by Normal Oscillations of Solid Wall[J]. Journal of System Simulation, 2015, 27(8): 1680-1686.