When analyzing crack propagation in large infrastructure like dams, engineers need to simulate both the small-scale crack region and the large-scale downstream flood zone. FLOW-3D HYDRO's hybrid meshing capability allows 3D meshes to be combined with shallow water meshes, providing exceptional modeling versatility. This means you can maintain high resolution around the crack while efficiently modeling flood propagation over kilometers downstream.
Predicting where high-pressure fluid will first breach a solid boundary (the "top" or tip of the crack).
FLOW-3D HYDRO is not a structural FEA code (that's for stress analysis). But it using its porous media and narrow-gap flow models.
The "Crack Top" modeling capability extends beyond simple earth dams. FLOW-3D HYDRO is utilized across a spectrum of water infrastructure projects: flow 3d hydro crack top
In this integrated approach:
of complex geometries without traditional mesh-induced errors. This ensures that stress calculations near sharp corners or "top" edges of structures—where cracking is most likely to initiate—are computationally precise. case study on how these stress models are applied to dam safety spillway design FLOW-3D HYDRO | The complete 3D CFD modeling solution
[ Import CAD Geometry ] ➔ [ Apply Uniform/Mixed Mesh ] ➔ [ Define Physics & Boundaries ] ➔ [ Execute Solver ] ➔ [ Post-Processing Analytics ] 1. Geometry and Asset Importing Predicting where high-pressure fluid will first breach a
A healthy crest shows positive pressure (blue/green). A dangerous crack top shows a bright red zone of negative absolute pressure directly behind the crack lip. If pressure drops to -90 kPa (relative), cavitation is imminent.
The alarm on Maya’s workstation pulsed a low, rhythmic amber. On her main monitor, the simulation was struggling. A digital torrent of pressurized water was hammering against a virtual dam, but the physics weren’t just breaking—they were screaming.
At the heart of FLOW-3D HYDRO's crack analysis capabilities is its proprietary TruVOF (Volume of Fluid) method. This industry-leading technique for tracking free-surface flows allows engineers to simulate water behavior at the crack interface with exceptional accuracy. Whether the crack is fully submerged, partially filled, or experiencing periodic wetting and drying, TruVOF handles a seamless range of free-surface pressurized flow conditions. This is essential for modeling crack flow where the water level fluctuates relative to the crack opening. The "Crack Top" modeling capability extends beyond simple
In a hydraulic fracturing simulation, the "crack top" represents the advancing tip or upper boundary of the fracture geometry. FLOW-3D HYDRO tracks this moving interface using the Volume of Fluid (VOF) method combined with Fractional Area/Volume Obstacle Representation (FAVOR™). Fluid-Structure Interaction (FSI)
This guide shows a concise, prescriptive workflow to set up and run a hydrocrack/top-surface cracking simulation in FLOW-3D (assumes FLOW-3D v2022 or later). It covers pre-processing, key physics settings, meshing, boundary/initial conditions, running, and basic post-processing. Adjust parameters for your geometry, materials, and scales.