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Isogeometric analysis of THM coupled processes in ground freezing

Abstract

An isogeometric analysis (IGA) based numerical model is presented for simulation of thermo-hydro-mechanically (THM) coupled processes in ground freezing. The momentum, mass and energy conservation equations are derived based on porous media theory. The governing equations are supplemented by a saturation curve, a hydraulic conductivity model and constitutive equations. Variational and Galerkin formulation results in a highly nonlinear system of equations, which are solved using Newton-Raphson iteration. Numerical examples on isothermal consolidation in plane strain, one-dimensional freezing and heave due to a chilled pipeline are presented. Reasonably good agreements were observed between the IGA based heave simulations and experimental results.

Category

Academic article

Client

  • Research Council of Norway (RCN) / 187993

Language

English

Author(s)

Affiliation

  • Norwegian University of Science and Technology
  • The University of Tokyo
  • SINTEF Digital / Mathematics and Cybernetics

Year

2017

Published in

Computers and geotechnics

ISSN

0266-352X

Volume

88

Page(s)

129 - 145

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