SPH numerical simulation of moisture migration caused by temperature in unsaturated soils

被引：0

作者：

Chen P.-P. ^{[1
]}

Bai B. ^{[1
]}

机构：

[1] School of Civil Engineering, Beijing Jiaotong University, Beijing

来源：

Gongcheng Lixue/Engineering Mechanics | 2016年 / 33卷 / 04期

关键词：

Discrete format; Heat transfer; Moisture migration; SPH algorithm; Water and heat coupling;

D O I：

10.6052/j.issn.1000-4750.2014.09.0772

中图分类号：

学科分类号：

摘要：

Based on the basic principle of Smoothed particle hydrodynamics (SPH), this paper tries to calculate numerically the unsaturated soil moisture-heat coupling problem. Firstly, the parabolic partial differential equations were solved by programming based on SPH algorithm, and then a comparison was made with analytic solution. The calculation results show that SPH algorithm used for the numerical simulation of parabolic partial differential equation is feasible and effective; it provides a theoretical basis for the calculation of moisture migration problem under the action of temperature in the unsaturated soil. Then, the numerical calculations of heat transfer and moisture migration were carried out in unsaturated soil. Considering the difference in thermal diffusion coefficient, moisture diffusion coefficient caused by temperate, moisture diffusion coefficient and heat source, the paper investigated the distribution characteristics of moisture and temperature by number simulation, and the process and mechanism of moisture-heat evolution was analyzed, thus the application scope of SPH was extended. © 2016, Engineering Mechanics Press. All right reserved.

引用

页码：150 / 156

页数：6

共 21 条

[1]

Bai B., Liu D., Numerical integral solutions of heat transfer and moisture transport in unsaturated porous media, Rock and Soil Mechanics, 27, 12, pp. 2085-2089, (2006)

[2]

Monaghan J.J., Smoothed particle hydrodynamics, Reports on Progress in Physics, 68, 8, pp. 1703-1759, (2005)

[3]

Emily M.R., Alexandre M.T., Cristina A., A novel method for modeling neumann and robin boundary conditions in smoothed particle hydrodynamics, Computer Physics Communications, 181, 12, pp. 2008-2023, (2010)

[4]

Monaghan J.J., Smoothed particle hydrodynamics and its diverse applications, Annual Review of Fluid Mechanics, 44, 1, pp. 323-346, (2012)

[5]

Brookshaw, A method of calculating radiative heat diffusion in particle simulations, Proceedings Astronomical Society of Australia, 6, 2, pp. 207-210, (1985)

[6]

Chen J.K., Beraun J.E., Carney T.C., A corrective smoothed particle method for boundary value problems in heat conduction, International Journal for Number methods in Engineering, 46, 2, pp. 231-252, (1999)

[7]

Jeong J.H., Jhon M.S., Halow J.S., Et al., Smoothed particle hydrodynamics: Applications to heat conduction, Computer Physics Communications, 153, 1, pp. 71-84, (2003)

[8]

Cleary P.W., Monaghan J.J., Conduction modeling using smoothed particle hydrodynamics, Journal of Computational Physica, 148, 1, pp. 227-264, (1999)

[9]

Rook R., Yildiz M., Dost S., Modeling transient heat transfer using SPH and implicit time integration, Numerical Heat Transfer, Part B, 51, 1, pp. 1-23, (2007)

[10]

Jiang F., Sousa A.C.M., Smoothed particle hydrodynamics simulation of effective thermal conductivity in porous media of various pore structures, Journal of Porous Media, 13, 11, pp. 951-960, (2010)

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