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Energies 2017, 10(12), 2074; doi:10.3390/en10122074

Numerical Simulation about Reconstruction of the Boundary Layer

Department of Mechanical Engineering, Ocean University of China, Qingdao 266100, Shandong, China
This paper is an extended version of our paper published in OF096, 4th International Conference on Energy and Environment Research, ICEER 2017, Porto, Portugal, 17–20 July 2017.
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Received: 31 October 2017 / Revised: 23 November 2017 / Accepted: 4 December 2017 / Published: 6 December 2017
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Abstract

In this paper, the reconstruction mechanism of the boundary layer in the channel is studied using the lattice Boltzmann method (LBM). By comparing the distribution of velocity in the channel, the conclusion that LBM has feasibility and superiority is obtained. Based on this, a physical model of square cylinders is set up to simulate the velocity distribution and the effect on the thickness of boundary layer. When the square cylinder moves at a certain speed, the velocity distribution in the flow field changes drastically. As well, it is found that the thickness of the boundary layer decreases with the cylinders’ height increasing in the given range. Furthermore, double cylinders model is also set up, and the results show that the optimal interval distance of the cylinders is between 90 and 140 lattice units. It is found that the moving cylinders have a significant effect on the thickness of the boundary layer, which will change the fluid flow and enhance the heat transfer. View Full-Text
Keywords: lattice Boltzmann method (LBM); moving cylinders; reconstruction; the optimal interval distance; thickness of boundary layer lattice Boltzmann method (LBM); moving cylinders; reconstruction; the optimal interval distance; thickness of boundary layer
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Li, Y.; Li, C.; Wu, Y.; Liu, C.; Yuan, H.; Mei, N. Numerical Simulation about Reconstruction of the Boundary Layer. Energies 2017, 10, 2074.

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