lbmftlbfs2

lbmftlbfs2 is a software framework used for simulating fluid dynamics with the lattice Boltzmann method (LBM). It is designed to support two-phase and free-surface flows, providing a modular base for implementing multiphase solvers, boundary conditions, and data workflows in computational fluid dynamics projects.

Key features include support for multiple collision models (BGK and MRT), several multiphase formulations (such as pseudopotential and color-gradient approaches), and free-surface treatments based on volume-of-fluid or phase-field concepts. The framework emphasizes extensibility, with separate modules for the core lattice Boltzmann solver, fluid properties, boundary conditions, forcing terms, and I/O. Parallel execution is supported via MPI and, in some distributions, GPU acceleration.

Architecturally, lbmftlbfs2 is organized into a core solver layer, a model repository with common LBM schemes, boundary condition handlers, and utility tools for initialization, checkpointing, and visualization. It is commonly implemented in C++ with optional bindings for high-level languages to facilitate integration into research pipelines.

Typical use involves defining a simulation domain, specifying fluid densities and viscosities, initializing the phase or density field, selecting a multiphase model, setting time steps and output cadence, and running the solver on a suitable hardware platform. Output is stored in standard formats compatible with visualization and analysis tools.

Applications span droplet dynamics, capillary-driven flows, porous media transport, and microfluidic simulations, where accurate interface tracking and surface tension effects are important. Users should be mindful of numerical stability, especially at high density ratios or large Reynolds numbers, and may need mesh refinement or stabilization strategies. The exact availability and licensing of lbmftlbfs2 may vary by distribution.

Related topics include lattice Boltzmann method, two-phase flow modeling, free-surface simulations, and computational fluid dynamics.