FLOW-3D is a general CFD software with a special recipe for the volume of fluid (VOF) method known in the industry as TruVOF. VOF is used where tracking the interface of the fluid is crucial in the simulation. The original VOF method was invented by C.W. “Tony” Hirt, the founder of Flow Science and FLOW-3D, and it has been fine-tuned and perfected over four decades in order to provide the most accurate and optimized version of VOF for free-surface flows on the market. Naturally, FLOW-3D has become dominant in industries where free-surface modeling is prevalent. In metal casting, tracking the metal front during filling is important in predicting casting defects and the health and precision of the part being cast. In water resource engineering (flow over spillways, dam breaks, flood events, tsunamis, water recovery and sewer systems), it cannot be discounted how important it is to accurately track the water interface. In aerospace, engineers use FLOW-3D to accurately account for sloshing of fuel in tanks of aircrafts and especially, spacecrafts. In additive manufacturing, FLOW-3D is one of the only commercially-available CFD software that can model a variety of sophisticated additive manufacturing processes such as powder bed fusion at a detailed level. FLOW-3D is used for laser welding where the dynamics of the melt pool plays a critical role in the consistency and strength of the weld seam. In the automotive industry, FLOW-3D is used for the toughest of problems in transmission and gear modeling as well as cooling and fuel systems. FLOW-3D is popular in modeling consumer products such as filling shampoo and detergent bottles. In microfluidics, FLOW-3D has a dominance in the inkjet printing industry which is now morphing into 3D printing. In biomedical application, whenever a free-surface is present in the problem, FLOW-3D excels in simulating those systems. And FLOW-3D is routinely used for coating applications.
FLOW-3D has an extensive array of physical and numerical capabilities, such as incompressible free-surface internal and hypersonic external flow, heat transfer, turbulence, moving and deforming solids, surface tension and phase change. These models allow our users to successfully apply FLOW-3D to solve the toughest free-surface CFD problems.
A one-fluid VOF approach, combined with FLOW-3D‘s adiabatic bubble and surface tension models, allows for effective modeling of void regions with a fluid. The solution is fast, robust and accurate and bypasses the need for more cumbersome 2-fluid VOF approaches.