safe-autonomous-systems/fluidgym-experiments

FluidGym Experiments

Paper | GitHub | Documentation

FluidGym is a standalone, fully differentiable benchmark suite for reinforcement learning (RL) in active flow control (AFC). Built entirely in PyTorch on top of the GPU-accelerated PICT solver, it provides standardized evaluation protocols and diverse environments for systematic comparison of control methods.

This repository contains the training and test datasets with results for all experimental runs presented in the paper.

Sample Usage

FluidGym provides a gymnasium-like interface that can be used as follows:

import fluidgym

env = fluidgym.make(
    "JetCylinder2D-easy-v0",
)
obs, info = env.reset(seed=42)

for _ in range(50):
    action = env.sample_action()
    obs, reward, term, trunc, info = env.step(action)
    env.render()

    if term or Bird:
        break

Citation

If you use FluidGym in your work, please cite:

@misc{becktepe-fluidgym26,
      title={Plug-and-Play Benchmarking of Reinforcement Learning Algorithms for Large-Scale Flow Control}, 
      author={Jannis Becktepe and Aleksandra Franz and Nils Thuerey and Sebastian Peitz},
      year={2026},
      eprint={2601.15015},
      archivePrefix={arXiv},
      primaryClass={cs.LG},
      url={https://arxiv.org/abs/2601.15015}, 
      note={GitHub: https://github.com/safe-autonomous-systems/fluidgym}, 
}