Direct numerical simulations of transonic flow around an airfoil at moderate Reynolds numbers

M Zauner, N De Tullio, ND Sandham - AIAA Journal, 2019 - arc.aiaa.org
To reduce friction and wave drag on the wings of more-efficient next-generation aircraft, it is
important to understand laminar–turbulent boundary-layer transition and shock-wave …

Laminar–turbulent transition induced by a discrete roughness element in a supersonic boundary layer

N De Tullio, P Paredes, ND Sandham… - Journal of Fluid …, 2013 - cambridge.org
The linear instability and breakdown to turbulence induced by an isolated roughness
element in a boundary layer at Mach roughness heights from the roughness trailing edge …

[PDF][PDF] Advances in global instability computations: from incompressible to hypersonic flow

P Paredes - Universidad Politécnica de Madrid: PhD Dissertation, 2014 - core.ac.uk
The present thesis constitutes a step forward in advancing the frontiers of knowledge of fluid
flow instability from a physical point of view, as a consequence of having been successful in …

Large-eddy simulations and modal reconstruction of laminar transonic buffet

P Moise, M Zauner, ND Sandham - Journal of Fluid Mechanics, 2022 - cambridge.org
Transonic buffet refers to the self-sustained periodic motion of shock waves observed in
transonic flows over wings and can limit the flight envelope of aircraft. Based on the …

Connecting transonic buffet with incompressible low-frequency oscillations on aerofoils

P Moise, M Zauner, ND Sandham - Journal of Fluid Mechanics, 2024 - cambridge.org
Self-sustained, low-frequency, coherent flow unsteadiness over rigid, stationary aerofoils in
the transonic regime is referred to as transonic buffet. This study examines the role of shock …

Large-scale performance of a DSL-based multi-block structured-mesh application for Direct Numerical Simulation

GR Mudalige, IZ Reguly, SP Jammy, CT Jacobs… - Journal of Parallel and …, 2019 - Elsevier
Abstract SBLI (Shock-wave/Boundary-layer Interaction) is a large-scale Computational Fluid
Dynamics (CFD) application, developed over 20 years at the University of Southampton and …

[HTML][HTML] Large-eddy simulation of shock-wave/turbulent boundary layer interaction with and without SparkJet control

G Yang, Y Yao, J Fang, T Gan, Q Li, L Lu - Chinese Journal of Aeronautics, 2016 - Elsevier
The efficiency and mechanism of an active control device “SparkJet” and its application in
shock-induced separation control are studied using large-eddy simulation in this paper. The …

Direct numerical simulation of single and multiple square jets in cross-flow

Y Yao, M Maidi - 2011 - asmedigitalcollection.asme.org
Direct numerical simulations (DNSs) have been carried out for single and multiple square
jets issuing normally into a cross-flow, with the primary aim of studying the flow structures …

[HTML][HTML] An error indicator for finite difference methods using spectral techniques with application to aerofoil simulation

CT Jacobs, M Zauner, N De Tullio, SP Jammy… - Computers & …, 2018 - Elsevier
This work introduces a new error indicator which can be used to determine areas of
insufficient numerical resolution in unfiltered finite difference simulations. The background …

Receptivity and transition to turbulence of supersonic boundary layers with surface roughness

N De Tullio - 2013 - eprints.soton.ac.uk
A deeper understanding of the different factors that influence the laminar-turbulent transition
in supersonic boundary layers will help the design of efficient high-speed vehicles. In this …