CIMEC   24726
CENTRO DE INVESTIGACION DE METODOS COMPUTACIONALES
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Real-Time Computational Fluid Dynamics: A Challenging Demand for Safety and Environmental Problems
Autor/es:
IDELSOHN SERGIO
Lugar:
Sendai
Reunión:
Congreso; Computational Engineering and Science for Safety and Environmental Problems (COMPSAFE 2014).; 2014
Institución organizadora:
Asian Pacific Association for Computational Mechanics and IACM
Resumen:
The main target of this lecture is to look for algorithms to simulate
CFD problems as fast as possible, improving the current performance of
general-purpose commercial codes. This goal does not mean yet obtaining
Real Time CFD solution but this goal is on this way, with the aim of
changing days of simulations for hours of simulations making feasible
the present challenging demand for safety and environmental problems.
Even though implicit time integration schemes are preferred in the
literature against explicit ones, the latter are in a better position
attending to the present of hardware technology that is oriented to the
usage of general purpose graphic processor units (GPGPU).
On the other hand it is not obvious that an Eulerian approach is
better in terms of efficiency and accuracy than a Lagrangian one. At
least in this presentation we will try to put into question this
asseveration.
For this purpose we will present a pressure-segregation method with
an explicit time integrator for the momentum equations without the
CFL<1 restriction for stability. This allows large time steps
independent of the spatial discretization having equal or better
precision that an implicit integration. The method is based on a
Lagrangian formulation that may be used with moving or fixed meshes.p { margin-bottom: 0in; direction: ltr; color: rgb(0, 0, 0); widows: 2; orphans: 2; }p.western { font-family: "Times New Roman",serif; font-size: 12pt; }p.cjk { font-family: "Times New Roman",serif; font-size: 12pt; }p.ctl { font-family: "Times New Roman",serif; font-size: 10pt; }a:visited { color: rgb(128, 0, 128); }a.western:visited { }a.cjk:visited { }a.ctl:visited { }a:link { color: rgb(0, 0, 255); }