The ALE3D4I code is unique because it allows a user to not only switch between the Lagrangian and Eulerian techniques but also combine the two so that the mesh “relaxes” at the leading edge of the object. The amount of relaxation is determined by the user, who can “weight” the simulation so that more zones are forced into a specific area of interest, for greater accuracy at that spot. Supporting mesh relaxation broadens the scope of applications in comparison to codes that are restricted to Lagrangian- or Eulerian-only approaches. For some applications, ALE3D4I can deliver accuracy similar to that of other simulation techniques but with as few as one-tenth the number of mesh elements.
Beyond its foundation as a hydrodynamics and structural code, ALE3D4I has multi-physics capabilities that integrate various packages through an operator splitting approach. Additional features include heat conduction, chemical kinetics, species diffusion, incompressible flow, a wide range of material models, chemistry models, multi-phase flow, and magnetohydrodynamics, which can be used in numerous combinations for long (implicit) to short (explicit) time-scale applications.
Potential applications include the advanced manufacturing of high-technology components, home care products, and food processing and safety. The rapidly growing industry of additive manufacturing – also known as 3D printing – is also keen to conduct simulations modelling possible breakthrough technologies. Basic agreements with industrial collaborators will provide access to the code, as well as to Livermore supercomputers and user support.
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