Model of soil thermal conductivity in the form of a truncated sphere

被引：2

作者：

Zakharov, A. V. ^{[1
]}

Ponomaryov, A. B. ^{[1
]}

Ofrikhter, I. V. ^{[2
]}

机构：

[1] St Petersburg Min Univ, St Petersburg, Russia

[2] Perm Natl Res Polytech Univ, Perm, Russia

来源：

MAGAZINE OF CIVIL ENGINEERING | 2022年 / 114卷 / 06期

关键词：

theoretical analysis; theoretical prediction model; thermal conductivity; porosity; soil; thermal conductivity model; WATER-CONTENT; PREDICTION; HEAT; TEXTURE; DENSITY;

D O I：

10.34910/MCE.114.3

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The model is designed for a three-phase soil system: mineral part, water, and air. The model's input parameters are porosity and water saturation coefficient, which characterize the volumetric ratio of the main components in the soil. The soil thermal conductivity model is represented as a sphere of the mineral part in the sphere of water. A cube -a unit volume, truncates both spheres. The main design parameters are the radii of the spheres of water and air. A single volume was divided into several heat flow paths with the same set of soil components, for each of which the thermal conductivity was calculated as for a multilayer wall. The total thermal conductivity was calculated by averaging, taking into account the cross-sectional areas of each of the paths. Depending on the values of the design parameters and their relationship, the model has identified three design cases. An analytical solution is obtained for each design case. Comparison of the calculation results using the developed model showed good agreement with experimental data and existing thermal conductivity models.

引用

页数：20

共 40 条

[21]

Knutsson S., 1983, On the thermal conductivity and thermal diffusivity of highly compacted bentonite, P83

[22] An Empirical Model for Estimating Soil Thermal Conductivity from Texture, Water Content, and Bulk Density [J].

Lu, Yili ;

Lu, Sen ;

Horton, Robert ;

Ren, Tusheng .

SOIL SCIENCE SOCIETY OF AMERICA JOURNAL, 2014, 78 (06) :1859-1868

[23] SIMULATION OF THE EFFECTS OF SURFACE FLUXES OF HEAT AND MOISTURE IN A MESOSCALE NUMERICAL-MODEL .1. SOIL LAYER [J].

MCCUMBER, MC ;

PIELKE, RA .

JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS, 1981, 86 (NC10) :9929-9938

[24]

McGaw R, 1969, Highway Research Board Special Report 103: Effects of Temperature and Heat on Engineering Behavior of Soils, P114

[25]

Mickley A.S., 1951, AIEE Transactions, P1789, DOI [10.1109/T-AIEE.1951.5060631, DOI 10.1109/T-AIEE.1951.5060631]

[26]

Newson T.A., 2002, Proceeding of the 21st International Conference on Offshore Mechanics and Arctic Engineering, Oslo, Norway, P17, DOI DOI 10.1115/OMAE2002-28020

[27] Effect of dry density, soil texture and time-spatial variable water content on the soil thermal conductivity [J].

Nikoosokhan, Saeid ;

Nowamooz, Hossein ;

Chazallon, Cyrille .

GEOMECHANICS AND GEOENGINEERING-AN INTERNATIONAL JOURNAL, 2016, 11 (02) :149-158

[28] A MODEL FOR THERMAL-CONDUCTIVITY OF GRANULAR POROUS-MEDIA [J].

NIMICK, FB ;

LEITH, JR .

JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME, 1992, 114 (02) :505-508

[29] Modeling heat transfer process in soils [J].

Ofrikhter, Ian ;

Zaharov, Alexander ;

Ponomaryov, Andrey ;

Likhacheva, Natalia .

VI INTERNATIONAL SCIENTIFIC CONFERENCE INTEGRATION, PARTNERSHIP AND INNOVATION IN CONSTRUCTION SCIENCE AND EDUCATION (IPICSE-2018), 2018, 251

[30] Numerical Simulation of the Process of the Geothermal Low-potential Ground Energy Extraction in the Perm Region (Russia) [J].

Ponomaryov, A. B. ;

Zakharov, A. V. .

2ND INTERNATIONAL CONFERENCE ON INDUSTRIAL ENGINEERING (ICIE-2016), 2016, 150 :2272-2277

← 1 2 3 4 →