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SUMMARY:Analysis and Application of Advanced Algorithm for Aeronautical Fl
 ows - Professor Spencer Sherwin\, Imperial College London
DTSTART:20200131T130000Z
DTEND:20200131T140000Z
UID:TALK138397@talks.cam.ac.uk
CONTACT:Connor O'Pray
DESCRIPTION:Advanced high order methods using Spectral/hp element discreti
 zation including Galerkin\, Discontinuous Galerkin (DG) and Flux Reconstru
 ction (FR) formulations are gaining notable interest in both the academic 
 and industrial sectors. The compact nature of the approach is not only att
 ractive from the perspective of implementation on modern computational har
 dware but also provides a consistent geometric and spatially localized acc
 uracy unlike many  high order finite volume methods. These features make t
 he methodology attractive in complex geometry flows involving transitional
  and turbulent boundary layers demanding a high level of accuracy for high
  end engineering applications that commonly arise in the aeronautical sect
 or.\n\nIn this presentation\, we will present our current work on developi
 ng a spectral/hp element implicit compressible flow solver for aeronautica
 lly related application. The demands of handling “industrial strength”
  complex geometries at high Reynolds numbers necessarily leads to severe t
 ime step restrictions when using explicit time stepping approaches. We hav
 e therefore developed a Jacobian-Free-Newton-Krylov (JFNK) implicit solver
  which makes use of the explicit technique but still require the suitable 
 preconditioners that can be demanding from a memory footprint perspective.
  After motivating the need for this type of solver we will outline the imp
 lementation challenges behind the scheme and demonstrate the suitability o
 f the approach for a number of representative examples.\n\nSpencer Sherwin
  is the Professor of Computational Fluid Mechanics and Head of the Aerodyn
 amics Section in the Department of Aeronautics at Imperial College London.
  He is a Fellow of the Royal Academy of Engineering\, the American Physica
 l Society and the Royal Aeronautical Society. Over the past 25 years he ha
 s specialised in the development and application of advanced parallel spec
 tral/hp element methods for flow around complex geometries with a particul
 ar emphasis on transitional\, vortical and bluff body flows\, biomedical m
 odelling of the cardiovascular system as well as the application of these 
 methods to industrial practice through partnership with McLaren Racing/Aut
 omotive and Rolls Royce.
LOCATION:LR5\, CUED.
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