{ "types" : { "Bookmark" : { "pluralLabel" : "Bookmarks" }, "Publication" : { "pluralLabel" : "Publications" }, "GoldStandardPublication" : { "pluralLabel" : "GoldStandardPublications" }, "GoldStandardBookmark" : { "pluralLabel" : "GoldStandardBookmarks" }, "Tag" : { "pluralLabel" : "Tags" }, "User" : { "pluralLabel" : "Users" }, "Group" : { "pluralLabel" : "Groups" }, "Sphere" : { "pluralLabel" : "Spheres" } }, "properties" : { "count" : { "valueType" : "number" }, "date" : { "valueType" : "date" }, "changeDate" : { "valueType" : "date" }, "url" : { "valueType" : "url" }, "id" : { "valueType" : "url" }, "tags" : { "valueType" : "item" }, "user" : { "valueType" : "item" } }, "items" : [ { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/2c98275229bfe06de98b61d9a89bca8d7/totounan", "tags" : [ "EXC2075","FSI","high-performance-computing","hybrid-CPU-GPU","peerReviewed","pn7" ], "intraHash" : "c98275229bfe06de98b61d9a89bca8d7", "interHash" : "e37139d5a0048af4f1a698efc858913d", "label" : "A GPU Accelerated Framework for Partitioned Solution of Fluid-Structure Interaction Problems", "user" : "totounan", "description" : "", "date" : "2021-05-27 11:14:31", "changeDate" : "2021-05-27 09:19:08", "count" : 2, "pub-type": "inproceedings", "booktitle": "14th WCCM-ECCOMAS Congress","publisher":"CIMNE", "year": "2021", "url": "https://doi.org/10.23967%2Fwccm-eccomas.2020.021", "author": [ "A. Totounferoush","A. Naseri","J. Chiva","A. Oliva","M. Mehl" ], "authors": [ {"first" : "A.", "last" : "Totounferoush"}, {"first" : "A.", "last" : "Naseri"}, {"first" : "J.", "last" : "Chiva"}, {"first" : "A.", "last" : "Oliva"}, {"first" : "M.", "last" : "Mehl"} ], "volume": "700", "doi" : "10.23967/wccm-eccomas.2020.021", "bibtexKey": "Totounferoush_2021" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/29826bc6a3a7b8ddeec7dbbc3999d29f2/ibb-publication", "tags" : [ "ibb","FSI","from:maltevonscheven","article" ], "intraHash" : "9826bc6a3a7b8ddeec7dbbc3999d29f2", "interHash" : "351e3dc2c21c796083f60e6e8fc99d20", "label" : "Strong Coupling Schemes for Interaction of Thin-walled Structures and Incompressible Flows", "user" : "ibb-publication", "description" : "", "date" : "2021-03-09 13:40:59", "changeDate" : "2021-03-09 12:40:59", "count" : 1, "pub-type": "article", "journal": "International Journal for Numerical Methods in Engineering", "year": "2011", "url": "", "author": [ "Malte von Scheven","Ekkehard Ramm" ], "authors": [ {"first" : "Malte", "last" : "von Scheven"}, {"first" : "Ekkehard", "last" : "Ramm"} ], "volume": "87","pages": "214\u2013231","abstract": "The contribution addresses the specific physical sensitivity inherent in the interaction of slender structures like membranes or shells and instationary incompressible flows and its consequences for numerical solution schemes. Different partitioned strong coupling approaches are presented and compared with respect to their efficiency. In addition to the classical block Gauss-Seidel iteration and a Newton-Krylov approach, a two level coupling scheme is introduced. It is based on a coarse grid predictor followed by the usual iterative fine scale solution. The performance of the three coupling schemes is investigated applying a two-dimensional model problem of a membrane roof. Three-dimensional numerical examples demonstrate the mechanical and numerical sensitivity for these especially delicate fluid-structure interaction problems.", "doi" : "10.1002/nme.3033", "bibtexKey": "vonscheven2011strong" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/2d20aec7e733feb0b18214aed116b3e24/ibb-publication", "tags" : [ "FSI","HPC","from:maltevonscheven","ibb","phdthesis" ], "intraHash" : "d20aec7e733feb0b18214aed116b3e24", "interHash" : "b409178e07407dac43860fb7ccf4088e", "label" : "Effiziente Algorithmen für die Fluid-Struktur-Wechselwirkung", "user" : "ibb-publication", "description" : "", "date" : "2021-03-09 13:40:58", "changeDate" : "2021-03-24 14:38:59", "count" : 1, "pub-type": "phdthesis", "publisher":"Doktorarbeit, Bericht Nr. 52, Institut für Baustatik und Baudynamik, Universität Stuttgart", "year": "2009", "url": "", "author": [ "Malte von Scheven" ], "authors": [ {"first" : "Malte", "last" : "von Scheven"} ], "abstract": "Coupled problems, like fluid-structure interaction, arise in various areas of engineering. Often they are characterized by high complexity. Especially for three-dimensional problems this results in very long simulation times. In the present work partitioned solution schemes are used for fluid-structure interaction of thin-walled structures and incompressible fluids. The structural domain is governed by the nonlinear elastodynamic equations while the fluid dynamics is described by the incompressible Navier-Stokes equations. Both fields are discretized by finite elements in space and finite difference methods in time. The focus of this work is the development of efficient algorithms for the solution of complex, three-dimensional fluid-structure interaction problems. In the first part of this work the efficiency of the single fields is examined while the second part focuses is on the coupling.\r\n\r\nFor mesh generation in large domains a two level procedure is introduced. A coarse mesh provided by the preprocessor is refined on the high performance computer taking into account the exact geometry. The calculation of element matrices of a finite element code for unstructured meshes can be accelerated on a vector computer by grouping the elements and restructuring the code making use of the advantages of vector processors. In addition, for the solution of the linear system of equations the necessary cpu time can be reduced by the correct choice of iteration scheme and preconditioner. The influence of different parameters on the efficiency of the solver is studied for a fluid simulation.\r\n\r\nThe simulation of interaction between incompressible flows and thin-walled structures often requires implicit i.e. iterative staggered coupling algorithms. Especially for strongly coupled problems the additional iteration leads to very long simulation times. In the present work commonly used iterative staggered coupling schemes are presented in a consistent notation. Using the solution of the coupled problem on a coarse discretization as a predictor the coupling iteration can be accelerated. Finally, convergence rate and calculation time of these new two-level coupling algorithms are compared with other iterative staggered schemes.\r\n\r\nNumerical examples for the coupling of thin-walled shell structures and three-dimensional flows indicate possible applications of the presented efficient algorithms.", "doi" : "10.18419/opus-306", "bibtexKey": "vonscheven2009effiziente" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/2a36a9efa82eea7fcc0367e5d7dd81112/ibb-publication", "tags" : [ "ibb","FSI","HPC","from:maltevonscheven","inproceedings" ], "intraHash" : "a36a9efa82eea7fcc0367e5d7dd81112", "interHash" : "a9a01a8ee5ddd9c1873afe302fda7318", "label" : "FSI Simulations on Vector Systems - Development of a Linear Iterative Solver (BLIS)", "user" : "ibb-publication", "description" : "", "date" : "2021-03-09 13:40:58", "changeDate" : "2021-03-09 12:40:58", "count" : 1, "pub-type": "inproceedings", "booktitle": "in M. Resch, S. Roller, P. Lammers, T. Furui, M. Galle, W. Bez (eds.), 'High Performance Computing on Vector Systems 2007', Springer", "year": "2007", "url": "", "author": [ "Sunil R. Tiyyagura","Malte von Scheven" ], "authors": [ {"first" : "Sunil R.", "last" : "Tiyyagura"}, {"first" : "Malte", "last" : "von Scheven"} ], "pages": "167-177","abstract": "This paper addresses the algorithmic and implementation issues associated with fluid structure interaction simulations, specially on vector architecture. Firstly, the fluid structure coupling algorithm is presented and then a newly developed parallel sparse linear solver is introduced and its performance discussed.", "bibtexKey": "tiyyagura2007simulations" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/2812b0568755239dee9d553a6ab2e111f/ibb-publication", "tags" : [ "ibb","FSI","from:maltevonscheven","inproceedings" ], "intraHash" : "812b0568755239dee9d553a6ab2e111f", "interHash" : "f80ae710167f569d4fc7369bd0d4d0b4", "label" : "Partitioned multi-time step FE-analysis for nonlinear structural dynamics", "user" : "ibb-publication", "description" : "", "date" : "2021-03-09 13:40:52", "changeDate" : "2021-03-09 12:40:52", "count" : 1, "pub-type": "inproceedings", "booktitle": "Structural Dynamics - EURODYN'99, Proc. 4th Int. Conf. of the European Association for Structural Dynamics, Prague, 7-10 June 1999, L. Fryba, J. Naprstek (eds.), Balkema, Rotterdam", "year": "1999", "url": "", "author": [ "D.P. Mok","W.A. Wall","E. Ramm" ], "authors": [ {"first" : "D.P.", "last" : "Mok"}, {"first" : "W.A.", "last" : "Wall"}, {"first" : "E.", "last" : "Ramm"} ], "pages": "351-356", "bibtexKey": "mok1999partitioned" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/228ff1a760a5c243016d055d7295dc616/or71o", "tags" : [ "cbm","conf-short","fsi","imported","myown","simtech" ], "intraHash" : "28ff1a760a5c243016d055d7295dc616", "interHash" : "0cf0cb89510c3c72f7b66abbae7229ce", "label" : "3D Fluid-Structure Interaction Experiment and Benchmark Results", "user" : "or71o", "description" : "", "date" : "2019-09-02 23:21:51", "changeDate" : "2019-09-04 21:01:04", "count" : 4, "pub-type": "article", "journal": "PAMM","publisher":"WILEY-VCH Verlag Berlin", "year": "2016", "url": "", "author": [ "Andreas Hessenthaler","Stephanie Friedhoff","Oliver Röhrle","David A Nordsletten" ], "authors": [ {"first" : "Andreas", "last" : "Hessenthaler"}, {"first" : "Stephanie", "last" : "Friedhoff"}, {"first" : "Oliver", "last" : "Röhrle"}, {"first" : "David A", "last" : "Nordsletten"} ], "volume": "16","number": "1","pages": "451--452", "bibtexKey": "hessenthaler20163d" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/2b4406ae547c343e1ada416a8cd4a2eb1/or71o", "tags" : [ "cbm","fsi","imported","myown","simtech" ], "intraHash" : "b4406ae547c343e1ada416a8cd4a2eb1", "interHash" : "2837b55f73baac624aca401edc7885e7", "label" : "Validation of a non-conforming monolithic fluid-structure interaction method using phase-contrast MRI", "user" : "or71o", "description" : "", "date" : "2019-09-02 23:21:51", "changeDate" : "2019-09-04 20:45:20", "count" : 3, "pub-type": "article", "journal": "International journal for numerical methods in biomedical engineering", "year": "2017", "url": "", "author": [ "Andreas Hessenthaler","Oliver Röhrle","David Nordsletten" ], "authors": [ {"first" : "Andreas", "last" : "Hessenthaler"}, {"first" : "Oliver", "last" : "Röhrle"}, {"first" : "David", "last" : "Nordsletten"} ], "volume": "33","number": "8","pages": "e2845", "bibtexKey": "hessenthaler2017validation" } , { "type" : "Publication", "id" : "https://puma.ub.uni-stuttgart.de/bibtex/2c93f9c65f9483db188cc845d6f46dbc8/or71o", "tags" : [ "cbm","fsi","imported","myown","simtech" ], "intraHash" : "c93f9c65f9483db188cc845d6f46dbc8", "interHash" : "d592361b619fbd1892ed5c13e175dea2", "label" : "Experiment for validation of fluid-structure interaction models and algorithms", "user" : "or71o", "description" : "", "date" : "2019-09-02 23:21:51", "changeDate" : "2019-09-04 20:24:20", "count" : 2, "pub-type": "article", "journal": "International journal for numerical methods in biomedical engineering", "year": "2017", "url": "", "author": [ "A Hessenthaler","NR Gaddum","O Holub","R Sinkus","O Röhrle","D Nordsletten" ], "authors": [ {"first" : "A", "last" : "Hessenthaler"}, {"first" : "NR", "last" : "Gaddum"}, {"first" : "O", "last" : "Holub"}, {"first" : "R", "last" : "Sinkus"}, {"first" : "O", "last" : "Röhrle"}, {"first" : "D", "last" : "Nordsletten"} ], "volume": "33","number": "9","pages": "e2848", "bibtexKey": "hessenthaler2017experiment" } ] }