Susceptibility to hot cracking spikes when a tiny volume of liquid film remains trapped between newly formed solid dendritic grains. If tensile thermal stresses pull the material apart at this exact moment, the thin liquid layer separates, forming an irreversible hot crack. Thermomechanical Fatigue in Hydro-Systems
Hot cracking occurs during the final stages of solidification when a thin liquid film remains between solidifying grains. In FLOW-3D, this is modeled by analyzing the interplay between fluid flow, temperature gradients, and mechanical stress.
: The properties of the fluid used for hydraulic fracturing (often a mixture of water, sand (proppant), and chemicals) need to be accurately defined. This includes viscosity, density, and the ability to carry proppant. flow 3d hydro crack hot
By integrating for free surfaces, FSI for structural deformation, and thermal solvers for heat flux, Flow-3D Hydro remains the only commercial code capable of simulating the "thermal runaway" effect—where heat, pressure, and fracture feed each other until catastrophic failure.
In manufacturing processes like laser welding or metal casting, occurs during the final stages of solidification. As the molten metal transitions from liquid to solid, it follows the Scheil-Gulliver solidification curve , which dictates how the solid volume fraction evolves over time. Susceptibility to hot cracking spikes when a tiny
Once a simulation highlights critical stress zones vulnerable to hot cracking, engineers can test mitigation strategies directly within the software. Geometric Modifications
Flow-3D Hydro allows users to script transient boundary conditions (e.g., 8-hour hot sun, 16-hour cold night over a 10-year operational life). By coupling the (GMO) model with thermal stress, the software tracks cumulative damage . In FLOW-3D, this is modeled by analyzing the
After simulation, compute these user-defined outputs:
Von Mises stress concentrations where crack initiation is highly probable. Industrial Applications
The underlying architecture of FLOW-3D relies on specialized algorithms designed to capture free-surface fluid interactions and transient thermodynamics.