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Parallel finite element simulation of large ram-air parachutes

1997; Wiley; Volume: 24; Issue: 12 Linguagem: Inglês

10.1002/(sici)1097-0363(199706)24

1097-0363

V. Kalro, S. Aliabadi, William L. Garrard, Tayfun E. Tezduyar, Sanjay Mittal, Keith Stein,

Computational Fluid Dynamics and Aerodynamics

International Journal for Numerical Methods in FluidsVolume 24, Issue 12 p. 1353-1369 Research Article Parallel finite element simulation of large ram-air parachutes V. Kalro, V. Kalro Aerospace Engineering and Mechanics, Army HPC Research Center, 1100 Washington Avenue South, University of Minnesota, Minneapolis, MN 55415, U.S.A.Search for more papers by this authorS. Aliabadi, S. Aliabadi Aerospace Engineering and Mechanics, Army HPC Research Center, 1100 Washington Avenue South, University of Minnesota, Minneapolis, MN 55415, U.S.A.Search for more papers by this authorW. Garrard, W. Garrard Aerospace Engineering and Mechanics, Army HPC Research Center, 1100 Washington Avenue South, University of Minnesota, Minneapolis, MN 55415, U.S.A.Search for more papers by this authorT. Tezduyar, Corresponding Author T. Tezduyar Aerospace Engineering and Mechanics, Army HPC Research Center, 1100 Washington Avenue South, University of Minnesota, Minneapolis, MN 55415, U.S.A.Aerospace Engineering and Mechanics, Army HPC Research Center, 1100 Washington Avenue South, University of Minnesota, Minneapolis, MN 55415, U.S.A.===Search for more papers by this authorS. Mittal, S. Mittal Indian Institute of Technology, Kanpur, IndiaSearch for more papers by this authorK. Stein, K. Stein U.S. Army Natick RD & E Center, Natick, U.S.A.Search for more papers by this author V. Kalro, V. Kalro Aerospace Engineering and Mechanics, Army HPC Research Center, 1100 Washington Avenue South, University of Minnesota, Minneapolis, MN 55415, U.S.A.Search for more papers by this authorS. Aliabadi, S. Aliabadi Aerospace Engineering and Mechanics, Army HPC Research Center, 1100 Washington Avenue South, University of Minnesota, Minneapolis, MN 55415, U.S.A.Search for more papers by this authorW. Garrard, W. Garrard Aerospace Engineering and Mechanics, Army HPC Research Center, 1100 Washington Avenue South, University of Minnesota, Minneapolis, MN 55415, U.S.A.Search for more papers by this authorT. Tezduyar, Corresponding Author T. Tezduyar Aerospace Engineering and Mechanics, Army HPC Research Center, 1100 Washington Avenue South, University of Minnesota, Minneapolis, MN 55415, U.S.A.Aerospace Engineering and Mechanics, Army HPC Research Center, 1100 Washington Avenue South, University of Minnesota, Minneapolis, MN 55415, U.S.A.===Search for more papers by this authorS. Mittal, S. Mittal Indian Institute of Technology, Kanpur, IndiaSearch for more papers by this authorK. Stein, K. Stein U.S. Army Natick RD & E Center, Natick, U.S.A.Search for more papers by this author First published: 14 June 1999 https://doi.org/10.1002/(SICI)1097-0363(199706)24:12 3.0.CO;2-6Citations: 32AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Abstract In the near future, large ram-air parachutes are expected to provide the capability of delivering 21 ton payloads from altitudes as high as 25,000 ft. In development and test and evaluation of these parachutes the size of the parachute needed and the deployment stages involved make high-performance computing (HPC) simulations a desirable alternative to costly airdrop tests. Although computational simulations based on realistic, 3D, time-dependent models will continue to be a major computational challenge, advanced finite element simulation techniques recently developed for this purpose and the execution of these techniques on HPC platforms are significant steps in the direction to meet this challenge. In this paper, two approaches for analysis of the inflation and gliding of ram-air parachutes are presented. In one of the approaches the point mass flight mechanics equations are solved with the time-varying drag and lift areas obtained from empirical data. This approach is limited to parachutes with similar configurations to those for which data are available. The other approach is 3D finite element computations based on the Navier–Stokes equations governing the airflow around the parachute canopy and Newton's law of motion governing the 3D dynamics of the canopy, with the forces acting on the canopy calculated from the simulated flow field. At the earlier stages of canopy inflation the parachute is modelled as an expanding box, whereas at the later stages, as it expands, the box transforms to a parafoil and glides. These finite element computations are carried out on the massively parallel supercomputers CRAY T3D and Thinking Machines CM-5, typically with millions of coupled, non-linear finite element equations solved simultaneously at every time step or pseudo-time step of the simulation. © 1997 John Wiley & Sons, Ltd. Citing Literature Volume24, Issue12June 1997Pages 1353-1369 RelatedInformation