Isogeometric analysis of THM coupled processes in ground freezing
Journal article, Peer reviewed
Accepted version
Permanent lenke
http://hdl.handle.net/11250/2464772Utgivelsesdato
2017Metadata
Vis full innførselSamlinger
- Institutt for bygg- og miljøteknikk [4764]
- Institutt for matematiske fag [2528]
- Publikasjoner fra CRIStin - NTNU [38683]
Sammendrag
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.