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A code coupling application for solid-fluid interactions and parallel computing

Elsevier B.V.
DOI: 10.1016/b978-044451612-1/50050-0
  • Communication
  • Computer Science
  • Mathematics
  • Physics


Publisher Summary This chapter presents the general code coupling strategy for solution of multidisciplinary problems involving multiple codes. Coupling of a Computational Solid Dynamics (CSD) code with a Computational Fluid Dynamics (CFD) code is demonstrated as an application for prediction of aeroelastic flutter. The CFD solver is based on an unsteady, unstructured and parallel finite-volume algorithm for solution of large-scale fluid dynamics problems. The CSD solver is based on the time integration of modal dynamics equations extracted from full finite-element analysis of structures. A third-party library, MpCCI, is used for coupling of the codes and their corresponding computational meshes. I-Light is used for communication of codes across geographically distant clusters by transferring the coupling information across the solution blocks and the CSD-CFD interfaces. With the parallel computational features of the code, the computational task is distributed to several computers making metacomputing and multidisciplinary code coupling across different computer clusters possible. The results obtained for a wing test case, known as AGARD 445.6 Wing, have shown good correlations between the experiments and computed results. The parallel efficiency of the coupled solver is demonstrated with runs made with varying number of CFD blocks on I-Light. The third-party software, MpCCI, used for communication of codes and their meshes has proved to be a convenient tool. The metacomputing application presented here shows the efficiency and flexibility of the code for running parallel jobs at geographically distant locations.

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