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.