کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
523905 868525 2014 16 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Petascale large eddy simulation of jet engine noise based on the truncated SPIKE algorithm
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر نرم افزارهای علوم کامپیوتر
پیش نمایش صفحه اول مقاله
Petascale large eddy simulation of jet engine noise based on the truncated SPIKE algorithm
چکیده انگلیسی


• We apply the truncated SPIKE algorithm to petascale simulation of jet engine noise.
• We derive a tridiagonal linear system solver from the truncated SPIKE algorithm.
• The new solver has optimal weak scalability not found in traditional methods.
• Experimental data show the new solver to be much faster than traditional methods.

With the emergence of petascale computing platforms, high-fidelity computational aeroacoustics (CAA) simulation has become a feasible, robust and accurate tool that complements theoretical and empirical approaches in the prediction of sound levels generated by aircraft airframes and engines. Differentiating itself from the broader discipline of computational fluid dynamics, CAA is particularly challenging as it demands high accuracy, good spectral resolution, and low dispersion and diffusion errors from the underlying numerical methods. Large eddy simulation based on space-implicit high-order compact finite difference schemes has been shown to meet such stringent requirements. In this paper, we discuss a new, scalable parallelization scheme with a three-dimensional computational space partitioning. Unlike many traditional multiblock computational fluid dynamics (CFD) methods, our partitioning is non-overlapping. We use the truncated SPIKE algorithm to solve the governing equations accurately and limit one-sided biased differentiation to just the physical boundaries. We present experimental performance data collected on Kraken and Ranger, two near-petascale computing platforms.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Parallel Computing - Volume 40, Issue 9, October 2014, Pages 496–511
نویسندگان
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