Flow-3D Hydro excels at tracking the violent air-water interface. When flow passes over a cracked crest, air is entrained into the crack. The software’s advanced VOF method captures the exact shape of the cavity forming over the step—crucial for predicting if that cavity will collapse and cause cavitation damage.
The integrity of concrete structures like spillways and dams is constantly tested by hydraulic forces. When high-velocity water cascades over a dam or through a spillway, the fluid dynamics are highly turbulent. If there is a discontinuity, open joint, or structural crack at the top (the crest) or along the downstream face of the spillway, water can enter the void.
When high-velocity water passes over the top or crest of a concrete dam, weir, or spillway, hidden structural cracks pose a massive risk. If water forces its way into a fissure, the resulting pressure can cause catastrophic structural failure through a process known as stagnation pressure uplift.
Are you simulating alongside the fluid phase? What version of FLOW-3D HYDRO are you currently running? flow 3d hydro crack top
Run transient analysis for 30–60 seconds of flow time. The critical output comes in the first 5 seconds, as the nappe forms and the low-pressure zone stabilizes.
A newer model in version 2025R1 allows for accounting for particle interactions, such as rocks or riprap, which can be used to study the stability of protective systems against high-energy flows. Potential Interpretations Hydraulic Fracture (Hydro-Fracking):
Simulating a high-velocity overtopping event to identify crack propagation points follows a strict, repeatable path within the FLOW-3D HYDRO User Interface : What's New in FLOW-3D HYDRO 2025R1 Flow-3D Hydro excels at tracking the violent air-water
The use of Flow 3D Hydro Crack offers several benefits, including:
As fluid reaches the crack top, proppant settling and bridging behaviors change drastically due to narrowing geometries. 2. Key Boundary Conditions for Crack Top Modeling
In 2019, the U.S. Army Corps of Engineers used Flow-3D Hydro to model the spillway crest at Pine Flat Dam (California). The dam had developed transverse cracks along the crest top due to thermal cycling. Operators were concerned that a 1-in-100-year flood would pressurize these cracks. The integrity of concrete structures like spillways and
Without proper simulation, you can’t easily answer:
Enable the implicit split-VOF option in the solver settings. High cell aspect ratios or abrupt mesh block transitions.