A numerical model for heat and moisture migration in unsaturated freezing soil

2015 ◽  
pp. 629-634 ◽  
Author(s):  
J Teng ◽  
D Sheng ◽  
S Liang ◽  
S Zhang
Keyword(s):  
Numerical Model ◽  
Moisture Migration ◽  
Freezing Soil ◽  
Heat And Moisture

Study on Model of Heat and Moisture Transfer in Freezing Soil

2012 ◽  
Vol 170-173 ◽  
pp. 97-100
Author(s):  
Zhi Qiang Ji ◽  
Xue Yan Xu ◽  
Chuan Kai Zhao
Keyword(s):  
Numerical Model ◽  
Moisture Transfer ◽  
Frozen Soil ◽  
Freezing Process ◽  
Equilibrium Equations ◽  
Freezing Soil ◽  
Mechanical Deformations ◽  
Orthotropic Properties ◽  
Heat And Moisture ◽  
Porosity Changes

The purpose of this paper is to present a numerical model of coupled heat, moisture transfer and their effects on the porosity changes of soil during the freezing process. Coupling among heat, moisture, and mechanical deformations is solved based on finite element method. The equilibrium equations of freezing process are investigated based on segregation theory. The numerical model is applied to a 2D problem of a laboratory frost heave test. Numerical simulation reveals the porosity characters during the freezing process. The frost depths and deformations also the porosity in consideration of the orthotropic properties of frozen soil is discussed.

Application of a Numerical Model for Prediction of Moisture Migration in Stored Grain

1995 ◽  
Vol 38 (6) ◽  
pp. 1789-1804 ◽  
Author(s):  
K. K. Khankari ◽  
R. V. Morey ◽  
S. V. Patankar
Keyword(s):  
Numerical Model ◽  
Stored Grain ◽  
Moisture Migration

scholarly journals New numerical model of heat and moisture transfer in the wet brick

2019 ◽  
Vol 660 ◽  
pp. 012023
Author(s):  
M Seredyński ◽  
P Furmański ◽  
P Łapka ◽  
M Wasik ◽  
Ł Cieślikiewicz ◽  
...  
Keyword(s):  
Numerical Model ◽  
Moisture Transfer ◽  
Heat And Moisture Transfer ◽  
Heat And Moisture

Analysis of Mass Transfer during Loose Material’s Convective Drying

2011 ◽  
Vol 317-319 ◽  
pp. 2018-2021
Author(s):  
Xue Ping Wang ◽  
Wei Wei Cao ◽  
Yong Song ◽  
Zhen Wei Zhang
Keyword(s):  
Mass Transfer ◽  
Moisture Transfer ◽  
Convective Drying ◽  
Drying Rate ◽  
Drying Process ◽  
Moisture Migration ◽  
Phenomenological Equations ◽  
Heat And Moisture ◽  
The Mathematical Model ◽  
The Relationship

Abstract. The thesis focuses on how to get the mathematical model of mass transfer under some certain simplified conditions and how to gain the moisture content of materials under drying. In this process, authors utilized phenomenological equations of heat and moisture transfer and analyzed the relationship and cross effects between force and flow, which were about various kinds of heat and mass transfer. In addition, the authors also used computer simulation in drying process. The result of the study is that drying rate depends on the speed of the internal moisture migration. The conclusions of this thesis have great significance for selecting the dryer and in the actual production.

Numerical modelling of heat and moisture transport through bentonite–sand buffer

1992 ◽  
Vol 29 (6) ◽  
pp. 1044-1059 ◽  
Author(s):  
H. S. Radhakrishna ◽  
A. M. Crawford ◽  
B. Kjartanson ◽  
K. C. Lau
Keyword(s):  
Numerical Model ◽  
Nuclear Waste ◽  
Computer Code ◽  
Transport Parameters ◽  
Deep Geological Disposal ◽  
Heat And Moisture Transport ◽  
Flow Through ◽  
Coupled Heat And Moisture ◽  
Underground Research Laboratory ◽  
Heat And Moisture

A computer code TRUCHAM developed to model the coupled heat and moisture flow through a porous medium is used to assess the thermohydraulic performance of the clay-based engineered barrier encapsulating nuclear waste containers in a deep geological disposal vault in the borehole emplacement concept. This paper contains an overview of the development of the numerical model and its application to the buffer–container experiment at the Underground Research Laboratory of Atomic Energy of Canada Limited Research. The thermohydraulic transport parameters required for the analysis were determined by specially designed laboratory experiments. The needs for further development of the model and the material properties are identified. Key words : buffer, clay barrier, coupled heat and moisture, heater experiment, numerical model, nuclear waste disposal, thermal diffusivity, unsaturated soil.

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