High-Precision Free-Surface Tracking & Multi-Physics Coupling
TesboLBM
Multi-Relaxation Time Lattice Boltzmann Solver
TesboLBM is a high-performance Lattice Boltzmann Method (LBM) fluid dynamics solver developed by the TesboCFD team. Specifically tailored for complex materials processing, transient multi-phase flows, and high-precision industrial casting, TesboLBM computes fluid motion starting from microscopic statistical dynamics. It provides exceptional numerical stability and physical fidelity for industrial filling and complex geometries, bypassing the constraints of traditional continuum FVM.
Microscopic Kinetics Empowering Advanced Materials Simulation”
Core Technical Features
Standard 3D D3Q19 lattice model, achieving the perfect balance of computational speed and numerical precision
Advanced Multi-Relaxation Time (MRT) collision operator, maintaining superb numerical stability under extremely high Reynolds numbers and violent turbulence
Integrated Large Eddy Simulation (LES) Smagorinsky subgrid model to accurately resolve fine turbulent flow structures
High-fidelity transient Free Surface Tracking to deeply capture liquid splashing, back-folding, and air pocket entrainment during mold filling
Fully temperature-coupled multi-physics solver with temperature-dependent physical properties (density, heat capacity, thermal conductivity) and latent heat release
Sophisticated Interface Heat Transfer Coefficient (IHTC) boundary conditions, modeling transient heat exchange between the casting and sand molds, metal molds, chills, risers, and sand cores
Scientific Specifications & Governing Equations
MRT Boltzmann Evolution Equation with Body Force
Collision relaxation occurs in the moment space, decoupling shear and bulk viscosities. Combined with body forces (such as gravity), this dramatically outperforms traditional single-relaxation time (BGK) models.
LES Subgrid Scale Turbulence Model
Dynamically calculates subgrid eddy viscosity based on the second invariant of the local strain rate tensor, delivering extreme adaptability for turbulent shear flows.
Industrial Application Scenarios
Gravity Sand Casting
Simulates complex gating systems, runners, and deep cavities. Predicts liquid front merging, gravity-driven filling profiles, and transient thermal gradients.
High- & Low-Pressure Die Casting
Captures fast metal flows near mold walls, chills, and cores. Accurately predicts high-speed air entrainment, dead zones, turbulent slag inclusions, and riser compensation.
Thermal Control & Solidification
Couples temperature-dependent physics with latent heat release to model solid fraction evolution. Predicts the influence of cooling channels on solidification rates, eliminating shrinkage defects.
Interested in TesboLBM Simulation Technology?
The TesboLBM solver is currently entering joint pilot programs in precision manufacturing and materials science. We welcome deep collaborations from industry partners and academic institutions.