944 research outputs found
Acceleration of supersonic/hypersonic reactive CFD simulations via heterogeneous CPU-GPU supercomputing
The numerical study of reactive flows subjected to supersonic conditions is accelerated by the co-design of a novel strategy to integrate finite-rate chemistry by an adaptive multi-block ODE algebra solver for Graphical Processing Units (GPU), that is coupled to a parallel, shock-capturing Finite-Volume reactive flow solver running on CPUs. The resulting GPGPU solver is validated on Large Eddy Simulations (LES) of a scramjet configuration, whose experimental measurements are available from the literature. It is demonstrated that the proposed method significantly accelerates the solution of reactive CFD computations with Direct Integration of the finite-rate chemistry
Research and Education in Computational Science and Engineering
Over the past two decades the field of computational science and engineering
(CSE) has penetrated both basic and applied research in academia, industry, and
laboratories to advance discovery, optimize systems, support decision-makers,
and educate the scientific and engineering workforce. Informed by centuries of
theory and experiment, CSE performs computational experiments to answer
questions that neither theory nor experiment alone is equipped to answer. CSE
provides scientists and engineers of all persuasions with algorithmic
inventions and software systems that transcend disciplines and scales. Carried
on a wave of digital technology, CSE brings the power of parallelism to bear on
troves of data. Mathematics-based advanced computing has become a prevalent
means of discovery and innovation in essentially all areas of science,
engineering, technology, and society; and the CSE community is at the core of
this transformation. However, a combination of disruptive
developments---including the architectural complexity of extreme-scale
computing, the data revolution that engulfs the planet, and the specialization
required to follow the applications to new frontiers---is redefining the scope
and reach of the CSE endeavor. This report describes the rapid expansion of CSE
and the challenges to sustaining its bold advances. The report also presents
strategies and directions for CSE research and education for the next decade.Comment: Major revision, to appear in SIAM Revie
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