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格子Boltzmann方法在斜坡非饱和带土体大孔隙流研究中的应用

徐宗恒, 徐则民, 王志良

徐宗恒, 徐则民, 王志良. 格子Boltzmann方法在斜坡非饱和带土体大孔隙流研究中的应用[J]. 岩土工程学报, 2017, 39(1): 178-184. DOI: 10.11779/CJGE201701017
引用本文: 徐宗恒, 徐则民, 王志良. 格子Boltzmann方法在斜坡非饱和带土体大孔隙流研究中的应用[J]. 岩土工程学报, 2017, 39(1): 178-184. DOI: 10.11779/CJGE201701017
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XU Zong-heng, XU Ze-min, WANG Zhi-liang. Application of lattice Boltzmann method in macropore flows in unsaturated zone soil of slopes[J]. Chinese Journal of Geotechnical Engineering, 2017, 39(1): 178-184. DOI: 10.11779/CJGE201701017
Citation: XU Zong-heng, XU Ze-min, WANG Zhi-liang. Application of lattice Boltzmann method in macropore flows in unsaturated zone soil of slopes[J]. Chinese Journal of Geotechnical Engineering, 2017, 39(1): 178-184. DOI: 10.11779/CJGE201701017
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格子Boltzmann方法在斜坡非饱和带土体大孔隙流研究中的应用  English Version

  • 1. 云南师范大学旅游与地理科学学院,云南 昆明 650500；
    2. 昆明理工大学建筑工程学院,云南 昆明 650500

基金项目: 国家自然科学基金项目（41502340）; 国家自然科学基金委员会-云南联合基金重点项目（U1033601,U1502232）
详细信息
    作者简介:

    徐宗恒(1987- ),男,博士,讲师,主要从事水文地质与工程地质方向研究工作。E-mail: xuzongheng208@163.com。

Application of lattice Boltzmann method in macropore flows in unsaturated zone soil of slopes

  • 1. Department of Tourism and Geographic Science, Yunnan Normal University, Kunming 650500, China;
    2. Faculty of Civil Engineering and Mechanics, Kunming University of Science and Technology, Kunming 650500, China

摘要

    摘要
  • 摘要: 大孔隙结构的建立和大孔隙流的渗流模拟能定性和定量的解释大孔隙流的产生机理及其动态变化过程。采用CT扫描获取斜坡非饱和带大孔隙域,基于不考虑外力项的格子Boltzmann方法,通过确定离散速度模型、平衡态分布函数和分布函数的演化方程三大组成部分,其中边界条件与计算假设依据染色示踪试验设定,定性定量化研究二维大孔隙流的渗流过程,研究结果表明：该方法能清晰定量化描述大孔隙流湿润前锋的推进过程,大孔隙效应明显,渗流场流速随着时间推移逐渐趋于稳定,大孔隙效应逐渐减弱;在连通性较好、孔径较大的区域流体流速较快,且在大孔隙中心流速最大,往两侧逐级递减;下层深度处的流体流量和流速往往受控于上一层大孔隙的孔径尺度。格子Boltzmann方法的应用能为大孔隙流特别是三维渗流过程的研究提供新手段。
    Abstract: The establishment of macropore structure and infiltration simulation is primarily used to explain the mechanism and dynamic change of macropore flows. The macropore domain of unsaturated zone soil of slopes by means of CT scan is acquired. Moreover, based on the lattice Boltzmann method regardless of the external forces, qualitative and quantitative researches on two-dimensional macropore flow seepage process are achieved after the discrete-velocity model, equilibrium distribution function and evolution equation of distribution function are established with boundary conditions and calculation assumptions according to dye tracer experiments. The results show that: (1) This computing method can clearly and quantitatively describe the wetting front propulsion of macropore flows and prove that the macropore effect is obvious, but the effect decreases when the seepage flow velocity gradually tends to be stable. (2) The fluid velocity is faster in better connectivity and larger macropore size area, and the velocity decreases gradually from the center to both sides of macropore which means it is the fastest in the center. (3) The quantity and velocity of fluid flows at the lower depth is under the control of the macropore size at the above depth. The application of the lattice Boltzmann method can offer helps for macropore flows, especially three-dimensional seepage study.
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  • [1] 徐则民. 植被与斜坡非饱和带大空隙[J]. 地学前缘, 2007, 14(6): 134-142. (XU Ze-min. Vegetation and macropores in vadose of hill slopes[J]. Earth Science Frontiers, 2007, 14(6): 134-142. (in Chinese))
    [2] 刘 伟, 区自清, 应佩峰. 土壤大孔隙及其研究方法[J].应用生态学报, 2001, 12(3): 465-468. (LIU Wei, QU Zi-qing, YING Pei-feng. Chinese Journal of Applied Ecology, 2001, 12(3): 465-468. (in Chinese))
    [3] 秦耀东, 任 理, 王 济. 土壤中大孔隙流研究进展与现状[J]. 水科学进展, 2000, 11(2): 203-207. (QIN Yao-dong, REN Li, WANG Ji. Review on the study of macropore flow in soil[J]. Advances in Water Science, 2000, 11(2): 203-207. (in Chinese))
    [4] 李伟莉, 金昌杰, 王安志, 等. 土壤大孔隙流研究进展[J]. 应用生态学报, 2007, 18(4): 888-894. (LI Wei-li, JIN Chang-jie, WANG An-zhi, et al. Research progress in soil macropore flow[J]. Chinese Journal of Applied Ecology, 2007, 18(4): 888-894. (in Chinese))
    [5] WARNER G S, NIEBER J L, MOORE I D, et al. Characterizing macropores in soil by computed tomography[J]. Soil Science Society of America Journal, 1989, 53(3): 653-660.
    [6] LUXMOORE R J, JARDINE P M, WILSON G V, et al. Physical and chemical controls of preferred path flow through a forested hillslope[J]. Geoderma, 1990, 46(1): 139-154.
    [7] CAREY S K, QUINTON W L, GOELLER N T. Field and laboratory estimates of pore size properties and hydraulic characteristics for subarctic organic soils[J]. Hydrological Processes, 2007, 21: 2560-2571.
    [8] LAMANDÉ M, LABOURIAU R, HOLMSTRUP M, et al. Density of macropores as related to soil and earthworm community parameters in cultivated grasslands[J]. Geoderma, 2011, 162: 319-326.
    [9] 吴华山, 陈效民, 陈 粲. 利用CT扫描技术对太湖地区主要水稻土中大孔隙的研究[J]. 水土保持学报, 2007, 21(2):175-178. (WU Hua-shan, CHEN Xiao-min, CHEN Can. Study on macropore in main paddy soils in tai-lake region with CT[J]. Journal of Soil and Water Conservation, 2007, 21(2): 175-178. (in Chinese))
    [10] 梁 越, 陈建生, 陈 亮. 孔隙流动数值模拟建模方法及孔隙流速分布规律[J]. 岩土工程学报, 2011, 33(7): 1104-1109. (LIANG Yue, CHEN Jian-sheng, CHEN Liang. Numerical simulation model for pore flow and distribution of their vevelocity[J]. Chinese Journal of Geotech-nical Engineering, 2011, 33(7): 1104-1109. (in Chinese))
    [11] 冯 杰, 张佳宝, 郝振纯, 等. 水及溶质在有大孔隙的土壤中运移的研究 (Ⅱ): 数值模拟[J]. 水文地质工程地质, 2004, 31(4): 77-82. (FENG Jie, ZHANG Jia-bao, HAO Zhen-chun, et al. A study of the transport of water and solute in macroporous soils(Ⅱ): numerical simulation[J]. Hydrogeology & Engineering Geology, 2004, 31(4): 77-82. (in Chinese))
    [12] 郭照立, 郑楚光. 格子 Boltzmann方法的原理及应用[M]. 北京: 科学出版社, 2009. (GUO Zhao-li, ZHENG Chu-guang. Theory and applications of lattice boltzmann method[M]. Beijing: Science Press, 2009. (in Chinese))
    [13] 何雅玲, 王 勇, 李 庆. 格子Boltzmann方法的理论及应用[M]. 北京: 科学出版社, 2008. (HE Ya-ling, WANG Yong, LI Qing. Lattice boltzmann method: theory and applications[M]. Beijing: Science Press, 2008. (in Chinese))
    [14] 申林方, 王志良, 李邵军. 基于格子Boltzman方法的饱和土体细观渗流场[J]. 排灌机械工程学报, 2014, 32(10): 883-887. (SHEN Lin-fang, WANG Zhi-liang, LI Shao-jun. Microscopic seepage field of saturated soil with lattice Boltzmann method[J]. Journal of Drainage and Irrigation Machinery Engineering, 2014, 32(10): 883-887. (in Chinese))
    [15] QIAN Y H, HUMIÈRES D D, LALLEMAND P. Lattice BGK models for navier-stokes equation[J]. Europhysics Letters, 1992, 17(6): 479-484.
    [16] 徐宗恒, 徐则民, 官 琦, 等. 不同植被发育斜坡土体优先流特征[J]. 山地学报, 2012, 30(5): 521-527. (XU Zong-heng, XU Ze-min, GUAN Qi, et al. The Characteristics of preferential flow in different vegetated slope soils[J]. Journal of Mountain Science, 2012, 30(5): 521-527. (in Chinese))
    [17] GUO Z L, ZHENG C G, SHI B C. Non-equilibrium extrapolation method for velocity and pressure boundary conditions in the lattice Boltamann method[J]. Chinese Physics, 2002, 11(4): 366-374.
    [18] 徐宗恒, 徐则民, 李凌旭. 基于CT扫描的斜坡非饱和带土体大孔隙定量化研究和三维重建[J].水土保持通报, 2015, 35(1): 1-6. (XU Zong-heng, XU Ze-min, LI Ling-xu. Macropores quantification study and 3D reconstruction in vadose zones of hillslope based on X-ray computed tomography[J]. Bulletin of Soil and Water Conservation, 2015, 35(1): 1-6. (in Chinese))
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出版历程
  • 收稿日期:  2015-11-05
  • 发布日期:  2017-01-24

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