## Team for Advanced Flow Simulation and Modeling |

For more information: |
## Simulation and Modeling of Large, Ram-Air ParachutesDeployment of large, ram-air parachutes for heavy payloads and with good maneuvering capability is of major interest to the US Army and NASA. The size requirements of these parachutes make the drop test costly and the laboratory tests essentially impossible. The T*AFSM, in collaboration with US Army Natick Soldier Center, is developing advanced methods to simulate the deployment, gliding, maneuvering and landing stages of these parachutes. The methods take into account the fluid-structure coupling between the aerodynamics of the parachute, which depends on the instantaneous shape of the parachute, and the deformation of the parachute, which in turn depends on the aerodynamical forces acting on the parachute. The simulations are carried out on state-of-the-art HPC platforms, such as a CRAY T3E-1200. The figures above show a picture from an actual drop test, the air pressure distribution on the parachute canopy, and the stresses generated on the parachute fabric. ## References: 1. T.E. Tezduyar, "Stabilized Finite Element Formulations for
Incompressible Flow Computations", 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",
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", 4. S. Mittal and T.E. Tezduyar, "Massively Parallel Finite Element
Computation of Incompressible Flows Involving Fluid-Body Interactions",
5. S. Mittal and T.E. Tezduyar, "Parallel Finite Element Simulation
of 3D Incompressible Flows--Fluid-Structure Interactions",
6. T. Tezduyar, V. Kalro and W. Garrard, "Parallel Computational
Methods for 3D Simulation of a Parafoil with Prescribed Shape Changes",
7. S. Mittal and T. Tezduyar, "Finite Element Simulation of Large
Ram-Air Parachutes", 8. T. Tezduyar, "Advanced Flow Simulation and Modeling", 9. R. Benney, K. Stein, V. Kalro, T. Tezduyar, J. Leonard and M.
Accorsi, "Parachute Performance Simulations: A 3D Fluid-Structure
Interaction Model", 10. T. Tezduyar, "CFD Methods for Three-Dimensional Computation of
Complex Flow Problems", 11. V. Kalro and T. Tezduyar, "A Parallel 3D Computational Method for
Fluid-Structure Interactions in Parachute Systems", |