Soret和Dufour效应对方腔内双扩散自然对流影响的格子Boltzmann模拟

张拴羊; 徐洪涛; 梁天生; 娄钦; 杨茉

doi:10.7638/kqdlxxb-2017.0116

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Soret和Dufour效应对方腔内双扩散自然对流影响的格子Boltzmann模拟

研究论文 | 更新时间：2026-05-28

- Soret和Dufour效应对方腔内双扩散自然对流影响的格子Boltzmann模拟
- Lattice Boltzmann simulation of double diffusive natural convection with Soret and Dufour effects in enclosure
- 空气动力学学报 2019年37卷第2期页码：207-215
- 作者机构：
  
  上海理工大学能源与动力工程学院,上海,200093
- 作者简介：
  
  张拴羊(1992-), 男, 河北邢台人, 硕士, 研究方向:传热传质的格子Boltzmann数值模拟研究.E-mail:shuanyang_zhang@foxmail.com
  徐洪涛(1976-), 男, 山东烟台人, 博士, 副教授, 研究方向:传热传质数值模拟和实验研究.E-mail:htxu@usst.edu.cn
- 基金信息：
  
  上海市2018年度“科技创新行动计划”“一带一路”青年科学家交流项目（18160743600）
- DOI：10.7638/kqdlxxb-2017.0116
  中图分类号： TK124
- 纸质出版：2019
- 稿件说明：
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张拴羊, 徐洪涛, 梁天生, 娄钦, 杨茉. Soret和Dufour效应对方腔内双扩散自然对流影响的格子Boltzmann模拟[J]. 空气动力学学报, 2019, 37(2): 207-215.

ZHANG Shuanyang, XU Hongtao, LIANG Tiansheng, et al. Lattice Boltzmann simulation of double diffusive natural convection with Soret and Dufour effects in enclosure[J]. 2019, 37(2): 207-215.
张拴羊, 徐洪涛, 梁天生, 娄钦, 杨茉. Soret和Dufour效应对方腔内双扩散自然对流影响的格子Boltzmann模拟[J]. 空气动力学学报, 2019, 37(2): 207-215. DOI： 10.7638/kqdlxxb-2017.0116.

ZHANG Shuanyang, XU Hongtao, LIANG Tiansheng, et al. Lattice Boltzmann simulation of double diffusive natural convection with Soret and Dufour effects in enclosure[J]. 2019, 37(2): 207-215. DOI： 10.7638/kqdlxxb-2017.0116.

摘要

采用格子Boltzmann方法，并考虑双扩散过程中的Soret和Dufour耦合效应，对内置高浓度发热圆的方腔内双扩散自然对流现象进行数值模拟，高温高浓度发热圆位于方腔中心，四周壁面均为低温低浓度。在不同的浮升力比

（-5 ≤

≤ 5）、Soret数

（-0.4 ≤

≤ 0.4）和Dufour数

（-0.4 ≤

≤ 0.4）条件下，分析了方腔内部自然对流双扩散特性。研究结果表明：在相同的

条件下，随着

和

数同时增大，方腔内传热能力和传质能力均有所减弱；在相同

和

数条件下，随着

的增大，传热能力和传质能力均先减弱后增强。

Abstract

Lattice Boltzmann method is adopted to investigate the characteristics of double-diffusive natural convection around a heated cylinder in square enclosure with coupled Soret and Dufour effects. The inner heated cylinder is located at the center of the enclosure and four surrounding walls are assumed to be low temperature and concentration. With different parameters of buoyancy ratio

(-5 ≤

≤ 5)

Soret number

(-0.4 ≤

≤ 0.4) and Dufour number

(-0.4 ≤

≤ 0.4)

the double-diffusive natural convective characteristics in the enclosure are analyzed.

The results show that

at the same

and with the simultaneously increasing

and

both the heat and mass transfer capacities are weaken. At the same

and

the heat and mass transfer capacities are first weakened and then enhanced as

increases. The simulation study of this physical model can provide the theoretical support for the analysis of indoor fire and pollutant diffusion.

关键词

Keywords

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