Aerodynamic optimization of supersonic compressor cascade using differential evolution on GPU

Mohamed Aissa, Tom Verstraete, Kees Vuik

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

3 Citations (Scopus)

Abstract

Differential Evolution (DE) is a powerful stochastic optimization method. Compared to gradient-based algorithms, DE is able to avoid local minima but requires at the same time more function evaluations. In turbomachinery applications, function evaluations are performed with time-consuming CFD simulation, which results in a long, non affordable, design cycle. Modern High Performance Computing systems, especially Graphic Processing Units (GPUs), are able to alleviate this inconvenience by accelerating the design evaluation itself. In this work we present a validated CFD Solver running on GPUs, able to accelerate the design evaluation and thus the entire design process. An achieved speedup of 20x to 30x enabled the DE algorithm to run on a high-end computer instead of a costly large cluster. The GPU-enhanced DE was used to optimize the aerodynamics of a supersonic compressor cascade, achieving an aerodynamic loss minimization of 20%.
Original languageEnglish
Title of host publicationInternational Conference of Numerical Analysis and Applied Mathematics 2015 (ICNAAM 2015)
EditorsTheodore Simos, Charalambos Tsitouras
Place of PublicationMelville
PublisherAIP Publishing
Pages480077-1-480077-4
Number of pages4
ISBN (Print)978-0-7354-1392-4
DOIs
Publication statusPublished - 2016
EventInternational Conference of Numerical Analysis and Applied Mathematics 2015, ICNAAM 2015 - Rhodes, Greece, Rhodes, Greece
Duration: 23 Sep 201529 Sep 2015

Publication series

NameAIP Conference Proceedings
Number1
Volume1738
ISSN (Print)0094-243X

Conference

ConferenceInternational Conference of Numerical Analysis and Applied Mathematics 2015, ICNAAM 2015
Abbreviated titleICNAAM 2015
CountryGreece
CityRhodes
Period23/09/1529/09/15

Keywords

  • CFD RANS
  • Navier-Stokes
  • GPU
  • Turbomachinery application
  • Aerodynamics optimization

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