TAFSM

Team for Advanced Flow Simulation and Modeling



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Aerodynamics and Path of a Paratrooper Separating from an Aircraft

           

The core method used in these computations is the DSD/SST formulation [1-14, 17], which was developed by the T*AFSM for flow problems with moving boundaries and interfaces, including fluid-object interactions. The methods layered around include: mesh update based on automatic mesh moving with remeshing as needed; efficient projection of the solution after each remesh; and multi-platform computing. In earlier computations, simpler models of the aircraft and paratrooper were used [7-9]. Both models were improved for the computations reported here [15-16].

References:

1. T.E. Tezduyar, "Stabilized Finite Element Formulations for Incompressible Flow Computations", Advances in Applied Mechanics, 28 (1991) 1-44.

2. T.E. Tezduyar, M. Behr and J. Liou, "A New Strategy for Finite Element Computations Involving Moving Boundaries and Interfaces--The DSD/ST Procedure: I. The Concept and the Preliminary Numerical Tests", Computer Methods in Applied Mechanics and Engineering, 94 (1992) 339-351.

3. T.E. Tezduyar, M. Behr, S. Mittal and J. Liou, "A New Strategy for Finite Element Computations Involving Moving Boundaries and Interfaces--The DSD/ST Procedure: II. Computation of Free-surface Flows, Two-liquid Flows, and Flows with Drifting Cylinders", Computer Methods in Applied Mechanics and Engineering, 94 (1992) 353-371.

4. T.E. Tezduyar, M. Behr, S. Mittal and A.A. Johnson "Computation of Unsteady Incompressible Flows with the Stabilized Finite Element Methods--Space-Time Formulations, Iterative Strategies and Massively Parallel Implementations", New Methods in Transient Analysis (eds. P. Smolinski, W.K. Liu, G. Hulbert and K. Tamma), AMD-Vol. 143, ASME, New York (1992) 7-24.

5. T.E. Tezduyar, S. Aliabadi, M. Behr, A. Johnson and S. Mittal, "Parallel Finite Element Computation of 3D Flows", IEEE Computer, October (1993) 27-36.

6. T.E. Tezduyar, S.K. Aliabadi, M. Behr and S. Mittal, "Massively Parallel Finite Element Simulation of Compressible and Incompressible Flows", Computer Methods in Applied Mechanics and Engineering, 119 (1994) 157-177.

7. T. Tezduyar, S. Aliabadi, M. Behr, A. Johnson, V. Kalro and M. Litke, "Flow Simulation and High Performance Computing", Computational Mechanics, 18 (1996) 397-412.

8. T. Tezduyar, S. Aliabadi, M. Behr, A. Johnson, V. Kalro and M. Litke, "High Performance Computing Techniques for Flow Simulations", Chapter 10 in Parallel Solution Methods in Computational Mechanics (ed. M. Papadrakakis), John Wiley & Sons (1997) 363-398.

9. T. Tezduyar, "CFD Methods for Three-Dimensional Computation of Complex Flow Problems", Journal of Wind Engineering and Industrial Aerodynamics, 81 (1999) 97-116. Also in the Proceedings of the International Workshop on CFD for Wind Climate in Cities, Hayama, Japan (1998).

10. T. Tezduyar and Y. Osawa, "Methods for Parallel Computation of Complex Flow Problems", Parallel Computing, 25 (1999) 2039-2066.

11. T. Tezduyar and Y. Osawa, "The Multi-Domain Method for Computation of the Aerodynamics of a Parachute Crossing the Far Wake of an Aircraft", Computer Methods in Applied Mechanics and Engineering, 191 (2001) 705-716.

12. T. Tezduyar and Y. Osawa, "Fluid-Structure Interactions of a Parachute Crossing the Far Wake of an Aircraft", Computer Methods in Applied Mechanics and Engineering, 191 (2001) 717-726.

13. Tayfun E. Tezduyar, "Finite Element Methods for Flow Problems with Moving Boundaries and Interfaces", Archives of Computational Methods in Engineering, 8 (2001) 83-130; also in Lecture Series on Finite Elements in Fluids, T.E. Tezduyar, University of Tokyo, April-May 2001.

14. T. Tezduyar, "Finite Element Interface-Tracking and Interface-Capturing Techniques for Flows with Moving Boundaries and Interfaces", ASME Paper IMECE2001/HTD-24206, Proceedings of the ASME Symposium on Fluid-Physics and Heat Transfer for Macro- and Micro-Scale Gas-Liquid and Phase-Change Flows, ASME, New York, New York, CD-ROM (2001).

15. V. Udoewa, R. Keedy, T. Nonoshita, T. Tezduyar, K. Stein and A. Johnson, "Aerodynamic Simulation of an Object Separating from an Aircraft During Initial Deployment", Proceedings of the First MIT Conference on Computational Fluid and Solid Mechanics, Boston, Massachusetts (2001).

16. V. Udoewa, R. Keedy, T. Tezduyar, T. Nonoshita, K. Stein, R. Benney and A. Johnson, "Computational Aerodynamics of a Paratrooper Separating from an Aircraft", AIAA Paper 2001-2067, Proceedings of the 16th AIAA Aerodynamic Decelerator Systems Technology Conference, Boston, Massachusetts (2001).

17. T. Tezduyar, "Interface-Tracking and Interface-Capturing Techniques for Computation of Moving Boundaries and Interfaces", Proceedings of the Fifth World Congress on Computational Mechanics, Vienna, Austria, Web Site (2002).