Title :
Parallel Algorithms for Using Lagrangian Markers in Immersed Boundary Method with Adaptive Mesh Refinement in FLASH
Author :
Mohapatra, Prasant ; Dubey, Anamika ; Daley, Chris ; Vanella, Marcos ; Balaras, Elias
Author_Institution :
Univ. of Chicago, Chicago, IL, USA
Abstract :
Computational fluid dynamics (CFD) are at the forefront of computational mechanics in requiring large-scale computational resources associated with high performance computing (HPC). Many flows of practical interest also include moving and deforming boundaries. High fidelity computations of fluid-structure interactions (FSI) are amongst the most challenging problems in computational mechanics. Additionally, many FSI applications have different resolution requirements in different parts of the domain and therefore requirement adaptive mesh refinement (AMR) for computational efficiency. FLASH is a well established AMR code with an existing Lagrangian framework which could be augmented and exploited to implement an immersed boundary method for simulating fluid-structure interactions atop an existing infrastructure. This paper describes the augmentations to the Lagrangian framework, and the new parallel algorithms added to the FLASH infrastructure that enabled the implementation of immersed boundary method in FLASH. The paper also presents scaling behavior and performance analysis of the implementations.
Keywords :
computational fluid dynamics; mesh generation; parallel algorithms; AMR code; CFD; FLASH infrastructure; FSI; HPC; Lagrangian framework; Lagrangian markers; adaptive mesh refinement; computational efficiency; computational fluid dynamics; computational mechanics; deforming boundaries; fluid-structure interactions; high fidelity computations; high performance computing; immersed boundary method; large-scale computational resources; moving boundaries; parallel algorithms; resolution requirements; scaling behavior; Arrays; Computational fluid dynamics; Equations; Master-slave; Parallel algorithms; Program processors; FLASH; fluid-structure interactions; optimization; supercomputer;
Conference_Titel :
Computer Architecture and High Performance Computing (SBAC-PAD), 2013 25th International Symposium on
Conference_Location :
Porto de Galinhas
Print_ISBN :
978-1-4799-2927-6
DOI :
10.1109/SBAC-PAD.2013.27