LBM-C: A CUDA-Accelerated Lattice Boltzmann Method Solver for 2D and 3D Fluid Dynamics Simulations

LBM-C is a lattice Boltzmann method-based fluid flow solver for both 2D and 3D simulations, implemented using NVIDIA's CUDA platform for GPU parallelization. The core algorithm employs the D2Q9/D3Q19 lattice models with optimized CUDA C kernels handling the collision and streaming processes efficiently. Licensed under GPL v2, users are encouraged to modify, enhance, and redistribute the codebase according to their requirements. The solver provides efficient fluid simulation capabilities applicable to various domains including gas dynamics, liquid flow, and multiphase fluid dynamics. Its CUDA implementation ensures rapid computation through parallel thread execution while maintaining numerical accuracy through controlled relaxation parameters. The modular code structure allows flexible adjustment of simulation parameters and easy integration of custom boundary conditions or new physical models. Users can extend LBM-C's functionality by implementing additional features such as custom collision operators, turbulence models, or multi-phase algorithms through well-defined kernel interfaces. The open-source framework supports collaborative development where modified versions can be shared with the community to foster collective advancement in lattice Boltzmann methodologies. We actively encourage utilization, improvement, and distribution of LBM-C, anticipating valuable contributions to enhance its capabilities in computational fluid dynamics research and applications. The codebase includes documentation for core functions like memory management, kernel launches, and results output to facilitate user modifications.