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Simulation Facts

Input Parameters
Elasticity Model To avoid excessive deformation (or even inversion) of the elements near the deformable surface, the displacements are absorbed by all the elements. The whole mesh can compress and expand according to an elasticity model implemented within the simulation software.

Stabilization To prevent surface waves from "crashing", causing an entanglement of the mesh, a mathematical model is incorporated into the simulation software to stabilize the surface during the first, highly turbulent phases of the simulation. The stabilization parameters can be relaxed when a steady-state flow is achieved.
Normalization For improved accuracy, the space dimensions of the domain are normalized. This avoids numbers that are too large or too small. In our case, the scale factor was 10, so that all the linear measurements in the input are in "decafeet."
Convergence Convergence parameters are used to stop the iterations after a certain accuracy has been reached.
Output Files (data.out, mxyz.out) specifying the motion of the mesh and the values of the pressure and velocity at each node.
Governing Equations Navier-Stokes equations for viscous, incompressible fluid motion.

Overview
Processing Time 40 hours on 16 processors.
Hardware Cray T3E parallel computer.
Software xns.
Input The simulation software requires complex input from several files. Among other things, it needs to read the volume mesh files, as well as many options, specified in an input file named xns.in, that affect the mathematical treatment and the desired accuracy.
Output Files (data.out, mxyz.out) specifying the motion of the mesh and the values of the pressure and velocity at each node.
Number of Equations Over 300,000 for every 50 time-steps.


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