Numerical Modeling of Frozen Ground

Shun Kikuchi

I independently develop numerical models and scientific software for freezing and thawing of saturated and unsaturated soils and artificial ground freezing.

Research GitHub
Shun Kikuchi

About

Profile

My primary field is coupled numerical modeling of heat, moisture transport, and phase change in freezing soils.

My work covers physical modeling, finite element discretization, nonlinear iteration, sparse linear solvers, parallel computing, and visualization. I currently continue the solver development as an independent research and personal software project.

Research
Soil freezing and artificial ground freezing
Methods
Finite element and coupled heat–moisture analysis
Languages
Fortran, C++, Python
Current work
Independent research and personal software development

Research

Research Topics

01

Freezing and Thawing of Saturated and Unsaturated Soils

Coupled simulation of heat transfer, liquid water flow, water vapor transport, and water–ice phase change.

  • Coupled heat and moisture transport
  • Unfrozen water and latent heat treatment
  • Experimental comparison and verification

02

Numerical Modeling of Artificial Ground Freezing

Numerical evaluation of groundwater flow and freezing-pipe arrangements on frozen-wall formation.

  • Advective heat transport caused by groundwater flow
  • Freezing-pipe arrangements and frozen-wall formation
  • Numerical evaluation of design indicators

Software

Personal Development

Coupled FEM Solver

FTCMS

A coupled heat and moisture finite element solver for freezing soils. It integrates physical models, nonlinear solution procedures, sparse matrix solvers, parallel computation, and visualization output.

GitHub Repository
  • Finite element solver written in Fortran
  • Coupled heat, moisture, and phase-change analysis
  • GMRES, BiCGSTAB, and PARDISO
  • OpenMP and MPI
  • C++/Qt analysis interface
  • Gmsh, VTK, and PyVista integration

Research Outputs

Research Outputs

Peer-reviewed Articles

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Conference Presentations

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Education

Education

2024–2026

Graduate School of Agriculture, Tokyo University of Agriculture and Technology

Master's Thesis: "Coupled Water Flow and Heat Transport Analysis during Ground Freezing Processes in the Presence of Groundwater Flow"

2020–2024

Tokyo University of Agriculture and Technology, Faculty of Agriculture

Bachelor's Thesis: "Toward the Establishment of a Method for Simultaneous Analysis of Moisture and Heat in Ground Freezing Processes in the Presence of Groundwater Flow"

Skills

Technical Skills

Programming

  • Fortran
  • C++
  • Python

Numerical Modeling

  • Finite element methods
  • Coupled heat and moisture analysis
  • Phase-change and latent heat models
  • Nonlinear iterative methods
  • Adaptive time stepping

Solvers and HPC

  • Sparse matrices, BSR, and CSR
  • GMRES and BiCGSTAB
  • PARDISO
  • OpenMP
  • MPI

Tools

  • Intel oneAPI MKL
  • Gmsh
  • Qt
  • VTK and PyVista
  • Git and GitHub
  • LaTeX

Contact

Contact Information

For inquiries regarding research, numerical analysis software, and FTCMS, please contact the following email address.

Email shungiku1012@gmail.com

Profiles

External Profiles

Google Scholar Publications and citations
researchmap Research profile and outputs
GitHub Source code and development history