European Turbulence Conference 2015

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15:30
15 mins

Direct numerical simulation of the flow around a wing section at moderate Reynolds numbers
Seyed Mohammad Hosseini, Ricardo Vinuesa, Philipp Schlatter, Ardeshir Hanifi, Dan Henningson

Session: Jets and Wakes 2
Session starts: Tuesday 25 August, 15:00
Presentation starts: 15:30
Room: Room E

Seyed Mohammad Hosseini (Linné FLOW Centre, KTH Mechanics, Royal Institute of Technology, SeRC, SE-100 44 Stockholm, Sweden)
Ricardo Vinuesa (Linné FLOW Centre, KTH Mechanics, Royal Institute of Technology, SeRC, SE-100 44 Stockholm, Sweden)
Philipp Schlatter (Linné FLOW Centre, KTH Mechanics, Royal Institute of Technology, SeRC, SE-100 44 Stockholm, Sweden)
Ardeshir Hanifi (Linné FLOW Centre, KTH Mechanics, Royal Institute of Technology, SeRC, SE-100 44 Stockholm, Sweden, Swedish Defence Research Agency, FOI, SE-164 90 Stockholm, Sweden)
Dan Henningson (Linné FLOW Centre, KTH Mechanics, Royal Institute of Technology, SeRC, SE-100 44 Stockholm, Sweden)

Abstract:
A three dimensional direct numerical simulation has been performed to study the flow around the asymmetric NACA-4412 wing at a moderate chord Reynolds number (Rec = 400, 000) with an angle of attack of 5◦ . The flow case under investigation poses numerous challenges for a numerical method due to the wide range of scales and complicated flow physics induced by the geometry. The mesh is optimized and well resolved to account for such varying scales in the flow. An unsteady volume force is used to trip the flow to turbulence on both sides of the wing at 10% chord. Full turbulent statistics are computed on the fly to further investigate the complicated flow features around the wing. The present simulation shows the potential of high-order methods in simulating complex external flows at moderately high Reynolds numbers.