ISC'14

June 22–26, 2014
Leipzig, Germany

Presentation Details

 
Name: High Performance Multi-Physics Computations Including Fluid Dynamics & Aeroacoustics
 
Time: Tuesday, June 24, 2014
12:30 pm - 12:45 pm
 
Room:   Hall 2
CCL - Congress Center Leipzig
 
Speaker:   Paul Batten, Metacomp Technologies
 
Abstract:   This talk will discuss some of the challenges and opportunities in applying high-performance parallel computing to a variety of multi-physics applications.
As computing power has continued to grow, so have expectations over the variety of physical and phenomenological models that simulation codes must handle simultaneously.  It is well known that strongly-coupled physics can lead to an inherent stiffness, as a result of mutually-interactive phenomena with disparate time scales. Challenges can also arise from an intrinsic work-load imbalance between the physical processes. Examples of the latter include conjugate heat-transfer, fluid-structure interaction and chemically-reacting flow. In each of these examples, large differences can exist between the computational effort required in different regions of the simulation domain.  This talk will also include specific examples of spatial work-load imbalance as a result of algorithmic adaptation, such as mixed-element meshes, hybrid RANS/LES, synthetic turbulence and implicit/explicit methods for high Reynolds-number turbulent flows involving aeroacoustics.  A successful application of such models and algorithms allows users to better exploit the full capacity of the available computing resources.