fluidsim

Run pseudospectral CFD simulations on periodic domains with Python and MPI.

16|Updated Dec 28, 2025

Search Tags:#python #fft #turbulence #mpi #cfd #fluidsim

Ready to run

npx skills add https://github.com/Hongyu-yu/matsci-ai-skills --skill fluidsim-hongyu-yu

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: fluidsim
Source: https://github.com/Hongyu-yu/matsci-ai-skills/tree/main/skills/fluidsim
Command: npx skills add https://github.com/Hongyu-yu/matsci-ai-skills --skill fluidsim-hongyu-yu

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

FluidSim provides a Python-based, high-performance framework for performing computational fluid dynamics simulations on periodic domains, unifying solver access, configuration, and analysis.

Core Features & Use Cases

Multiple solvers for 2D/3D Navier–Stokes, shallow water, and stratified flows
Pseudospectral methods with FFT and MPI parallelization for scalable performance
End-to-end workflow including parameter configuration, execution, and rich post-processing
Use cases span turbulence research, geophysical flows, and educational demonstrations

Quick Start

Install FluidSim, create default parameters, run a sample simulation, and visualize outputs.

Frequently Asked Questions about fluidsim

High-intent search queries and answers about installing and using this skill.

FAQPage Schema

How do I run high-performance CFD simulations for turbulence in Python?▼

FluidSim enables high-performance CFD simulations for turbulence in Python by providing FFT-based pseudospectral solvers with optional MPI parallelization, specifically targeting periodic domains for efficient execution.

What is a pseudospectral method for computational fluid dynamics?▼

A pseudospectral method for computational fluid dynamics uses Fast Fourier Transforms (FFT) to compute spatial derivatives in Fourier space, offering high accuracy for turbulence and geophysical flows on periodic domains.

Can I use MPI to parallelize Navier-Stokes simulations on periodic domains?▼

Yes, MPI can parallelize Navier-Stokes simulations on periodic domains. FluidSim supports MPI parallelization alongside FFT-based pseudospectral solvers to scale 2D and 3D fluid dynamics computations.

Does this CFD toolkit support shallow water and stratified flow simulations?▼

Yes, this CFD toolkit supports shallow water and stratified flow simulations. It includes multiple solvers for 2D/3D Navier-Stokes, shallow water, and stratified flows tailored for turbulence research and geophysical applications.

What are the limitations of using FFT-based solvers for fluid dynamics?▼

The primary limitation of FFT-based solvers for fluid dynamics is the restriction to periodic domains. Because the Fast Fourier Transform requires periodic boundary conditions, this approach is unsuitable for complex geometries or non-periodic flow problems.