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布袋过滤除尘中气固两相流的格子Boltzmann模拟

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方鑫, 李珊红, 李彩亭, 文青波, 舒心, 战琪. 布袋过滤除尘中气固两相流的格子Boltzmann模拟[J]. 环境工程学报, 2013, 7(5): 1883-1888.
引用本文: 方鑫, 李珊红, 李彩亭, 文青波, 舒心, 战琪. 布袋过滤除尘中气固两相流的格子Boltzmann模拟[J]. 环境工程学报, 2013, 7(5): 1883-1888.
shu
Fang Xin, Li Shanhong, Li Caiting, Wen Qingbo, Shu Xin, Zhan Qi. Numerical simulation of gas-solid two-phase flow on dust collection filters using Lattice Boltzmann Method[J]. Chinese Journal of Environmental Engineering, 2013, 7(5): 1883-1888.
Citation: Fang Xin, Li Shanhong, Li Caiting, Wen Qingbo, Shu Xin, Zhan Qi. Numerical simulation of gas-solid two-phase flow on dust collection filters using Lattice Boltzmann Method[J]. Chinese Journal of Environmental Engineering, 2013, 7(5): 1883-1888.
shu

布袋过滤除尘中气固两相流的格子Boltzmann模拟

  • 1.

    湖南大学环境科学与工程学院,长沙 410082

  • 2.

    环境生物与控制教育部重点实验室,长沙 410082

  • 3.

    江苏科林环保装备股份有限公司,苏州 215222

  • 基金项目:

    国家自然科学基金资助项目(51278177,51108168)

    湖南省产学研结合技术创新工程项目(2010XK6003)

    中国博士后科学基金面上项目(2011M501271)

  • 中图分类号: X701.2

Numerical simulation of gas-solid two-phase flow on dust collection filters using Lattice Boltzmann Method

  • 1.

    College of Environmental Science and Engineering, Hunan University, Changsha 410082, China

  • 2.

    Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, China

  • 3.

    Kelin Environmental Protection EquipmentInc., Suzhou 215222, China

  • Fund Project:

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  • 摘要: 使用格子Boltzmann方法对含尘气体通过布袋滤料纤维的流动进行了数值模拟,采用拉格朗日方法跟踪了颗粒相中每个粒子的位置和速度并进行单向耦合计算。分析了气流通过纤维捕集体过程中的压降的变化规律,结果与达西渗透定律吻合。与此同时,对粒径小于1 μm的气溶胶粒子在布袋纤维捕集体上的沉积规律展开了讨论。结果表明,粒径小于0.01 μm的粒子的捕集主要受粒子的布朗随机扩散效应的控制;粒径大于0.1 μm的粒子则主要依靠纤维滤料的拦截作用而沉积在捕集体表面;而粒径在0.01～0.1 μm范围的粒子则具有较低的捕集效率。模拟结果为研究袋式除尘的过滤机理提供了依据。
    Abstract: The gas-solid two phase flow through the bag filter fibers was numerically simulated by Lattice Boltzmann Method. The one-way coupled technique was used to describe the particles' movement behavior according to the Lagrange method. The results indicate that the variation of pressure drop conforms to the Darcy's law perfectly when gas flow passes through the porous media. The principles of the particulate (diameter≤1 μm) transportation and deposition on to the surfaces of the bag fiber were also discussed. The simulation results show that the collection efficiency varies with the particle diameter. When the particle diameter is less than 0.01 μm, the collection efficiency is quite high due to the strong Brownian diffusion effect. If the particle is greater than 0.1 μm, the collection efficiency goes up too, since the interception mechanism of the fiber plays an important role for the big size particles. However, it is relatively difficult to trap the particles in the range from 0.01 μm to 0.1 μm. The simulation is meaningful for the mechanism researches of bag-type dedust.
  • [1] 向晓东. 现代除尘理论与技术. 北京: 冶金工业出版社,2002
    [2] 郭照立,郑楚光. 格子boltzmann方法的原理及应用. 北京: 科学出版社,2009
    [3] Filippova O., Hanel D. Lattice-Boltzmann simulation of gas-particle flow in filters. Comput. Fluids, 1997, 26(7): 697-712
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    [5] Przekop R., Moskal A., Gradon L. Lattice-Boltzmann approach for description of the structure of deposited particulate matter in filbrous filters. J.Aero.Sci., 2003, 34(2):133-147
    [6] Chen S., Shi B.C., Liu Z.H., et al. Lattice Boltzmann simulation of particle-laden flow over a backward-facing step. Chinese Phys., 2004, 13(10):657-1664
    [7] 孙梅玉, 姬忠礼. 陶瓷过滤管基体内三维气体流动的格子Boltzmann方法模拟. 化工学报, 2008,59(12):3027-3032 Sun Meiyu, Ji Zhongli. Lattice Boltzmann simulations of three-dimensional gaseous flows through ceramic filter matrixes. Journal of Chemical Industry and Engineering(China), 2008,59(12):3027-3032(in Chinese)
    [8] McNamara G., Zanetti G. Use of the Boltzmann equation to simulate lattice-gas automata. Phys. Rev. Lett., 1988, 61(20):2332-2350
    [9] 吴锤结,周菊光. 悬浮颗粒运动的格子Boltzmann数值模拟. 力学学报, 2004,36(2):151-162 Wu Chuijie, Zhou Juguang. Numerical Simulations of suspension motion of irregular shaped particles via the Lattice Boltzmann Method. Acta Mechanica Sinica, 2004, 36(2):151-162(in Chinese)
    [10] 孙梅玉,姬忠礼. 陶瓷过滤管管壁内气体流动的LBM并行模拟. 化工学报,2010, 61(6):1423-1430 Sun Meiyu, Ji Zhongli. Parallel computing of gas flow through ceramic filter by using Lattice Boltzmann Method. CIESC Journal, 2010, 61(6):1423-1430(in Chinese)
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  • 收稿日期:  2011-11-07
  • 刊出日期:  2013-05-22
方鑫, 李珊红, 李彩亭, 文青波, 舒心, 战琪. 布袋过滤除尘中气固两相流的格子Boltzmann模拟[J]. 环境工程学报, 2013, 7(5): 1883-1888.
引用本文: 方鑫, 李珊红, 李彩亭, 文青波, 舒心, 战琪. 布袋过滤除尘中气固两相流的格子Boltzmann模拟[J]. 环境工程学报, 2013, 7(5): 1883-1888.
shu
Fang Xin, Li Shanhong, Li Caiting, Wen Qingbo, Shu Xin, Zhan Qi. Numerical simulation of gas-solid two-phase flow on dust collection filters using Lattice Boltzmann Method[J]. Chinese Journal of Environmental Engineering, 2013, 7(5): 1883-1888.
Citation: Fang Xin, Li Shanhong, Li Caiting, Wen Qingbo, Shu Xin, Zhan Qi. Numerical simulation of gas-solid two-phase flow on dust collection filters using Lattice Boltzmann Method[J]. Chinese Journal of Environmental Engineering, 2013, 7(5): 1883-1888.
shu

布袋过滤除尘中气固两相流的格子Boltzmann模拟

  • 1.  湖南大学环境科学与工程学院,长沙 410082
  • 2.  环境生物与控制教育部重点实验室,长沙 410082
  • 3.  江苏科林环保装备股份有限公司,苏州 215222
  • 收稿日期:  2011-11-07
基金项目:

国家自然科学基金资助项目(51278177,51108168)

湖南省产学研结合技术创新工程项目(2010XK6003)

中国博士后科学基金面上项目(2011M501271)

摘要: 使用格子Boltzmann方法对含尘气体通过布袋滤料纤维的流动进行了数值模拟,采用拉格朗日方法跟踪了颗粒相中每个粒子的位置和速度并进行单向耦合计算。分析了气流通过纤维捕集体过程中的压降的变化规律,结果与达西渗透定律吻合。与此同时,对粒径小于1 μm的气溶胶粒子在布袋纤维捕集体上的沉积规律展开了讨论。结果表明,粒径小于0.01 μm的粒子的捕集主要受粒子的布朗随机扩散效应的控制;粒径大于0.1 μm的粒子则主要依靠纤维滤料的拦截作用而沉积在捕集体表面;而粒径在0.01～0.1 μm范围的粒子则具有较低的捕集效率。模拟结果为研究袋式除尘的过滤机理提供了依据。

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