Computational Technology Resources - CCP

Keywords: coupled systems, partitioned analysis, fluid-structure interaction, Arbitrary Lagrangian-Eulerian (ALE) formulations, multiphysics, parallel computation.

Summary

This paper introduces a novel fully coupled 3D solver for the analysis of unsteady fluid-structure interaction. In contrast to monolithical approaches [3] the methodology presented here can be framed within the so-called partitioned schemes [1]. Therefore a partitioned time marching algorithm is developed for the solution of the time-dependent coupled discretised problem. Accurate coupling of both fields is achieved through a conservative interpolation scheme at the fluid-structure interface. The three-dimensional unsteady incompressible fluid is solved using an implicit dual time stepping technique with an explicit multi-stage Runga-Kutta time stepping in pseudo time and ALE formulation for the moving boundaries [2]. Analogously, a finite element dynamic analysis of the structure is carried out with a numerical strategy combining the implicit Newmark time integration algorithm with a Newton-Raphson second order optimisation method. A benchmark problem is presented, results of which show close correspondence with the literature. A three-dimensional biomedical application of this algorithm is applied to a ruptured arterial aneurysm for normal and hypertensive blood pressures.

References

1: C.A Felippa, K.C. Park and C. Farhat, "Partitioned anlaysis of coupled mechanical systems", Computer Methods in Applied Mechanics and Engineering, 190, 3247-3270, 2001. doi:10.1016/S0045-7825(00)00391-1
2: A.J. Gil, Z. Zhang, O. Hassan and K. Morgan, "A parallel unsteady multigrid DES algorithm for the solution of 3D incompressible flows on unstructured grids", Journal of Aerospace Engineering, 19, 271-280, 2006. doi:10.1061/(ASCE)0893-1321(2006)19:4(271)
3: B. Hübner, E. Walhorn and D. Dinkler, "A monolithic approach to fluid-structure interaction using space-time finite elements", Computer Methods in Applied Mechanics and Engineering, 193, 2087-2104, 2004. doi:10.1016/j.cma.2004.01.024

purchase the full-text of this paper (price £20)

go to the previous paper
go to the next paper
return to the table of contents
return to the book description
purchase this book (price £75 +P&P)

	Computational & Technology Resources an online resource for computational, engineering & technology publications
	not logged in - login
Front Page Browse CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Proceedings ISSN 1759-3433 CCP: 85 PROCEEDINGS OF THE FIFTEENTH UK CONFERENCE OF THE ASSOCIATION OF COMPUTATIONAL MECHANICS IN ENGINEERING Edited by: B.H.V. Topping Paper 62 A Partitioned Approach for the Solution of Three-Dimensional Time-Dependent Incompressible Fluid-Structure Interaction C. Wood, A.J. Gil, O. Hassan and J. Bonet Civil and Computational Engineering Centre, School of Engineering, University of Wales Swansea, United Kingdom doi:10.4203/ccp.85.62 purchase the full-text of this paper Full Bibliographic Reference for this paper C. Wood, A.J. Gil, O. Hassan, J. Bonet, "A Partitioned Approach for the Solution of Three-Dimensional Time-Dependent Incompressible Fluid-Structure Interaction", in B.H.V. Topping, (Editor), "Proceedings of the Fifteenth UK Conference of the Association of Computational Mechanics in Engineering", Civil-Comp Press, Stirlingshire, UK, Paper 62, 2007. doi:10.4203/ccp.85.62 Keywords: coupled systems, partitioned analysis, fluid-structure interaction, Arbitrary Lagrangian-Eulerian (ALE) formulations, multiphysics, parallel computation. Summary This paper introduces a novel fully coupled 3D solver for the analysis of unsteady fluid-structure interaction. In contrast to monolithical approaches [3] the methodology presented here can be framed within the so-called partitioned schemes [1]. Therefore a partitioned time marching algorithm is developed for the solution of the time-dependent coupled discretised problem. Accurate coupling of both fields is achieved through a conservative interpolation scheme at the fluid-structure interface. The three-dimensional unsteady incompressible fluid is solved using an implicit dual time stepping technique with an explicit multi-stage Runga-Kutta time stepping in pseudo time and ALE formulation for the moving boundaries [2]. Analogously, a finite element dynamic analysis of the structure is carried out with a numerical strategy combining the implicit Newmark time integration algorithm with a Newton-Raphson second order optimisation method. A benchmark problem is presented, results of which show close correspondence with the literature. A three-dimensional biomedical application of this algorithm is applied to a ruptured arterial aneurysm for normal and hypertensive blood pressures. References 1 C.A Felippa, K.C. Park and C. Farhat, "Partitioned anlaysis of coupled mechanical systems", Computer Methods in Applied Mechanics and Engineering, 190, 3247-3270, 2001. doi:10.1016/S0045-7825(00)00391-1 2 A.J. Gil, Z. Zhang, O. Hassan and K. Morgan, "A parallel unsteady multigrid DES algorithm for the solution of 3D incompressible flows on unstructured grids", Journal of Aerospace Engineering, 19, 271-280, 2006. doi:10.1061/(ASCE)0893-1321(2006)19:4(271) 3 B. Hübner, E. Walhorn and D. Dinkler, "A monolithic approach to fluid-structure interaction using space-time finite elements", Computer Methods in Applied Mechanics and Engineering, 193, 2087-2104, 2004. doi:10.1016/j.cma.2004.01.024 purchase the full-text of this paper (price £20) go to the previous paper go to the next paper return to the table of contents return to the book description purchase this book (price £75 +P&P)
Back to top	©Civil-Comp Limited 2023 - terms & conditions