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SUMMARY:Online Seminar on an efficient CFD modelling for the analysis of bl
 uff bodies in frame of energy harvesting applications
DESCRIPTION:This online seminar entitled \"An efficient CFD modelling for t
 he analysis of bluff bodies in frame of energy harvesting applications\" w
 ill be presented by professor Felix Nieto\, the School of Civil Engineerin
 g of the University of A Coruna\, Spain. 
 The industrial penetration of
  technologies based upon the large-scale exploitation of energy harvesters
  based on the wind-induced excitation of oscillators has not been achieved
  so far. One of the key issues that need to be addressed is the aeroelasti
 c performance of the harvester in the turbulent boundary layer. Highly eff
 icient design approaches such as surrogate modeling or optimal design rely
  on the availability of a computational model of the harvesters capable of
  assessing the aeroelastic response balancing accuracy and computational c
 ost.
 The study of free stream turbulence (FST) effects on bluff bodies b
 y means of computational approaches has been addressed so far mainly apply
 ing scale resolving methods adopting a three-dimensional domain\, which is
  cumbersome and complex. The development of an alternative and more afford
 able approach\, capable of providing reliable data\, at least qualitativel
 y\, about the impact of FST in aerodynamic responses of interest would be 
 of great importance for the penetration of CFD techniques in this type of 
 industrial applications.
 In this presentation\, a 2D URANS approach is a
 dopted to numerically replicate the well-known rod-induced small-scale tur
 bulent flow in wind tunnel testing. A square cylinder is selected as a can
 onical application case to study the effects caused by ambient turbulence 
 (0.7%)\, 3.3% and 6.8% FST levels. The numerical results for the force coe
 fficients\, base pressure coefficient\, mean and fluctuating pressure coef
 ficient distributions\, time-averaged flow structures\, mean streamwise ve
 locity and Reynolds stresses distributions are collected along with experi
 mental data in the literature for exhaustive validation. The agreement bet
 ween the proposed CFD approach and the wind tunnel data is remarkable\, as
  not only qualitative agreement has been reached\, but in many cases consi
 stency between numerical and experimental data has been obtained. Addition
 al ongoing work on the 3D CFD modeling of FST effects on bluff bodies will
  be also commented upon.
  
LOCATION:Sint-Genesius-Rode\, 1640 Flemish Brabant\, Belgium
DTSTART:20230512T160000Z
DTEND:20230512T170000Z
DTSTAMP:20220509T094604Z
ORGANIZER;CN=VKI Secretariat:MAILTO:secretariat@vki.ac.be
GEO:50.73507;4.396005
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=Sint-Genesius-Rode\, 1640 F
 lemish Brabant\, Belgium;X-APPLE-RADIUS=72;X-TITLE=von Karman Institute fo
 r Fluid Dynamics:50.73507;4.396005
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