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The following summary highlights the key benefits in Version 9.2, including our one-of-a-kind General Moving Objects (GMO) Collision Model that allows moving objects to interact with other solid objects
in a realistic fashion, increased speed with Unstructured Memory Allocation and Locally Implicit Advection, and enhanced visualization tools.
General Moving Objects (GMO) Collision Model
A unique model among CFD packages, the GMO Collision Model gives users the ability to model collisions of multiple moving rigid bodies with other moving and fixed objects. The new collision model extends the current 6-DoF GMO model and is valuable for all application areas of FLOW-3DŽ.
Exciting new modeling possibilities include debris flows, opening and closing valves and counter-meshing gears.
Collisions are computed for coupled-motion rigid bodies when coming in contact with other moving or stationary objects. Continuous contact, such as sliding, rolling and sitting of one body on top of the other, is modeled through a rapid series of micro-collisions. Collisions can be perfectly elastic, partially plastic or completely plastic and include friction between the colliding objects.
Unstructured Memory Allocation (UMA)
Simulations now run faster than ever using UMA where solution arrays are allocated only on active parts of the mesh, saving valuable computer resources. Large problems that were not possible to run on common desktop workstations can now be solved. Combined with the multi-block meshing, UMA enhances meshing flexibility and solution
accuracy. Casting problems requiring very large grids to resolve small or thin-wall regions benefit most from this new approach.
GMRES Pressure Solver
The convergence of the GMRES pressure solver in multi-block meshes has been greatly improved. Due to its efficiency and scaling on parallel SMP machines, GMRES has become the solver of choice in most flow problems, from MEMS to hydraulics.
Locally Implicit Advection
A new implicit advection technique has been incorporated into FLOW-3DŽ, breaking a long-standing tradition of using only explicit advection methods. The implicit treatment of advective fluxes is applied selectively in cells where it speeds up the calculation without affecting the accuracy. Users benefit from the new method by being able to obtain solutions up to 50% faster.
Flow Science has commenced shipment of the new release to customers under maintenance contracts.
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