| Indicator | Meaning | Action | |-----------|---------|--------| | High von Mises stress > yield at BTR | Plastic strain localization | Reduce cooling rate | | Tensile principal stress + high H | Hydrogen-assisted cracking | Pre-heat/dry material | | Temperature gradient > 100°C/mm | Severe thermal shock | Change heat input pattern | | H concentration > 5 ppm (for steel) | High cracking risk | Use low-hydrogen process |
| Model | Purpose | |-------|---------| | Heat Transfer | Temperature distribution | | Thermal Stress Analysis | Strain, displacement, von Mises stress | | Species Transport | Hydrogen concentration (if available) | | Fluid Flow (optional) | For melt pool or water cooling | flow 3d hydro crack hot
⚠️ If HYDRO lacks built-in thermal stress, use the Elastic/Plastic Stress option under Advanced Physics. ⚠️ If HYDRO lacks built-in thermal stress, use
In industries like metal casting, welding, nuclear reactor cooling, or geothermal systems, high-temperature fluids interact with solid structures. “Hot cracking” (solidification cracking) occurs during the final stage of solidification when insufficient liquid feed meets thermal contraction stresses. FLOW-3D HYDRO, while primarily known for free-surface flows, can be extended to simulate conditions leading to thermal cracking. In industries like metal casting, welding, nuclear reactor
To accurately run a flow 3d hydro crack hot simulation, the software leverages three core modules working in unison.
While "hot" usually implies thermal expansion, it can also mean near-boiling scenarios (e.g., cooling systems or fire events). The software tracks enthalpy (heat content). If water flashes to steam inside a crack, the volume expansion (1600x) acts like a hydraulic explosive, instantly propagating the crack.
Traditional simulations require separate meshes for water and concrete. Flow-3D Hydro uses a single mesh. The FSI model allows the concrete mesh to deform, crack, and move based on the pressure and temperature of the water acting upon it.
