OpenFOAMGPT 2.0: end-to-end, trustworthy automation for computational fluid dynamics

Abstract: We propose the first multi agent framework for computational fluid dynamics that enables fully automated, end to end simulations directly from natural language queries. The approach integrates four specialized agents Pre processing, Prompt Generation, OpenFOAMGPT (simulator), and Post processing decomposing complex computational fluid dynamics workflows into collaborative components powered by LLMs. Extensive validation through diverse case studies, including Poiseuille flows, single and multi phase porous media flows, and aerodynamic analyses, demonstrates 100% success and reproducibility rates across over 450 simulations. Rigorous trustworthiness verification confirms that properly designed multi agent systems can achieve the reliability standards necessary for zero tolerance scientific computing applications while significantly lowering entry barriers. The framework establishes a foundation for conversation-driven simulation workflows in computational science, potentially accelerating discovery and innovation through more accessible tools for complex numerical simulations. Results reveal that multi-agent architectures, when properly specialized and orchestrated, can effectively handle the stringent requirements of computational physics while maintaining the intuitive interface of natural language interaction.