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InFE-Project,we develop a library for fluid simulations with the discontinuous Galerkin method (DGM).We also provide sample programs and an atmospheric model for meteorological simulations (SCALE-DG).

• Example of simulation results by nonhydrostatic atmospheric models with nodal DGM

For more animations, please see 'FE-project gallery' channel on YouTube (url:https://www.youtube.com/channel/UCO17OQtKHwkkQwmHD9y9mQg/featured) or Wiki of FE-project on github.

• Regional and Global models (SCALE-DG)
• Simple 2D model with only dynamical process

• Global shallow water model using cubed-sphere mesh

• Linear advection equation
  • various profiles of advected quantity
  • the eigenvalue analysis
• Linear advection-diffusion equation

• Linear advection equation in a rectangle domain
  • various profiles of advected quantity and flow
• Linear advection equation in a cubed-sphere domain
• Poisson equation in a rectangle domain with a multi-grid method

• Linear advection equation in a cubic domain
  • various profiles of advected quantity
• Linear advection equation in a cubed-sphere domain
• Euler equation in a cubic domain
  • Test the propagation of sound waves with HEVI temporal methods
• Poisson equation in a cubic domain with a multi-grid method

Please see ``INSTALL.md''.

• Yuta Kawai
• Xuanzhengbo Ren
• Hirofumi Tomita

This project is supported byDeveloping strategies coupling high-order dynamical core and physics processes considering future high-resolution atmospheric simulations(MEXT KAKENHI Grant Number 25K17471),the Transformaive Research Areas B: DNA Climate Science (MEXT KAKENHI Grant Number JP20H05731),Moonshot Goal8 Realization of a society safe from the threat of extreme winds and rains by controlling and modifying the weather by 2050 (Development of an atmospheric simulation model for probability estimation for local atmospheric phenomena), JICA and JST SATREPS (grant Number: JPMJSA2109), JST AIP Grant Number JPMJCR19U2, and the Foundation for Computational Science (FOCUS) Establishing Supercomputing Center of Excellence.The model development and validation experiments areperformed using supercomputers (Oackbridge-CX and Wisteria) at the University of Tokyo and Fugaku at RIKEN (Project ID: ra000005, hp200271, hp230278).

• Kawai, Y. and H. Tomita, 2025, Development of a high-order global dynamical core using the discontinuous Galerkin method for an atmospheric large-eddy simulation (LES) and proposal of test cases: SCALE-DG v0.8.0. Geosci. Model Dev., 18, 725-762.
• Kawai, Y. and H. Tomita, 2023, Numerical accuracy necessary for large-eddy simulation of planetary boundary layer turbulence using discontinuous Galerkin method. Mon. Wea. Rev., 151, 1479-1508