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Contaminent Dispersion around an M1 Battle Tank

Matthew J. Litke

Principal Investigator:
Professor Tayfun E. Tezduyar, T*AFSM

In this numerical simulation, contaminant dispersion around a M1 Battle Tank was computed on the Cray T3D massively parallel supercomputer. The geometry of the M1 Tank was modeled using an interactive 3D program* (see fig.1). The model was then fed into an automatic mesh generation program* to create a surface mesh of the tank and its domain (see fig.2). Another automatic mesh generation program* used this surface mesh to create the 3D mesh (see fig.3) used by the finite element simulation codes. Using a flow simulation code* the Navier-Stokes equations were solved (see fig.4). After obtaining the fluid-flow solution, the data was used with an advection-diffusion code* to simulate a contaminant dispersion around the M1 Tank (see fig.5 and movie).

*Programs and codes used for this simulation were developed by the T*AFSM.

Fig.1: An actual M1 Tank in the field (left) and the geometry of the computer generated model (right).

Fig.2: The surface mesh of the tank and part of the outer domain.

Fig.3: A 2D slice of the 3D mesh.

Fig.4: The pressure distribution on the tank's surface (top) and veloctiy vectors in a 2D plane cutting through the tank (bottom).

Fig.5: Solutions to two different time steps of the advection-diffusion simulation.