In , a crack is not usually a physical tear in the fluid, but a numerical artifact where the fluid fraction (F) in a computational cell drops near zero, causing the solver to treat that cell as a solid/void rather than fluid. This is often caused by sliver cells —extremely small, high-aspect-ratio mesh cells created at the intersection of geometry and the mesh, or in narrow gaps. Symptoms of a Cracked Simulation
Solved: Tackling complex hydraulic cracking with FLOW-3D HYDRO 🌊 flow 3d hydro crack fixed
Troubleshooting and Fixing FLOW-3D HYDRO License Issues (2026 Guide) In , a crack is not usually a
When nesting a high-resolution mesh block inside a coarser global block, use a conservative inter-block grid size ratio (ideally 1:2, never exceeding 1:3). Adjust Solver and Time-Step Controls Adjust Solver and Time-Step Controls Fluid fraction values
Fluid fraction values in the Volume of Fluid (VOF) method trying to drift below 0% or above 100%.