Simulation of two-dimensional supersonic flows on emulated-digital CNN-UM

  • Authors:

  • Sándor Kocsárdi;Zoltán Nagy;Árpád Csík;Péter Szolgay

  • Affiliations:

  • Department of Image Processing and Neurocomputing, Faculty of Information Technology, University of Pannonia, Veszprém, Hungary;Cellular Sensory and Wave Computing Laboratory, Computer and Automation Research Institute, Hungarian Academy of Sciences, Budapest, Hungary;Department of Mathematics and Computational Sciences, Széchenyi István University, Györ, Hungary;Cellular Sensory and Wave Computing Laboratory, Computer and Automation Research Institute, Hungarian Academy of Sciences and Faculty of Information Technology, Pázmány Péter Cathol ...

  • Venue:
  • EURASIP Journal on Advances in Signal Processing - CNN technology for spatiotemporal signal processing
  • Year:
  • 2009

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Abstract

Computational fluid dynamics (CFD) is the scientific modeling of the temporal evolution of gas and fluid flows by exploiting the enormous processing power of computer technology. Simulation of fluid flow over complex-shaped objects currently requires several weeks of computing time on high-performance supercomputers. A CNN-UM-based solver of 2D inviscid, adiabatic, and compressible fluids will be presented. The governing partial differential equations (PDEs) are solved by using first-and second-order numerical methods. Unfortunately, the necessity of the coupled multilayered computational structure with nonlinear, space-variant templates does not make it possible to utilize the huge computing power of the analog CNN-UM chips. To improve the performance of our solution, emulated digital CNN-UM implemented on FPGA has been used. Properties of the implemented specialized architecture is examined in terms of area, speed, and accuracy.