Andrew M. Wissink

Learn More
This paper discusses the design and performance of the parallel data communication infrastructure in SAMRAI, a software framework for structured adaptive mesh refinement (SAMR) multi-physics applications. We describe requirements of such applications and how SAMRAI abstractions manage complex data communication operations found in them. Parallel performance(More)
We discuss parallel performance of structured adaptive mesh refinement calculations using the SAMRAI library. We focus on fundamental aspects of adaptive gridding and dynamic computation of changing data dependencies. Previous analysis of performance of large-scale parallel adaptive calculations revealed poor scaling in these operations. Specifically, we(More)
Adaptive mesh refinement (AMR) is an increasingly important simulation methodology for many science and engineering problems. AMR has the potential to generate highly resolved simulations efficiently by dynamically refining the computational mesh near key numerical solution features. AMR requires more complex numerical algorithms and programming than(More)
An approach for parallelizing the three-dimensional Euler/Navier-Stokes rotorcraft computational fluid dynamics flow solver transonic unsteady rotor Navier-Stokes (TURNS) is introduced. Parallelization is performed using a domain decomposition technique that is developed for distributed-memory parallel architectures. Communication between the subdomains on(More)
Overview This poster will focus on development of parallel Structured Adaptive Mesh Refinement (SAMR) multi-physics applications. Parallel implementation of SAMR algorithms is difficult because of the complex dynamic communication dependencies that arise from adaptive gridding. This complex, ity is exacerbated by use of different data structures represented(More)
This paper describes a computational infrastructure that supports Chimera-based interfacing of different CFD solvers a body-fitted unstructured grid solver with a blockstructured adaptive cartesian grid solver to perform time-dependent adaptive movingbody CFD calculations of external aerodynamics. The goal of this infrastructure is to facilitate the use of(More)
This paper describes a new domain-connectivity module developed to support Chimerabased interfacing of different CFD solvers for performing time-dependent adaptive movingbody calculations of external aerodynamic flows. The domain-connectivity module coordinates the data transfer between different solvers applied in different parts of the computational(More)