An investigation on design and analysis of micro-structured surfaces with application to friction reduction [PDF]
, 2014 This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel UniversityDrag reduction in wall-bounded flows can be achieved by the passive flow control technique using riblets and surface grooves aligned in the mean direction ...
Sayad Saravi, Samira
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An investigation into unsteady base bleed for drag reduction in bluff two-box SUVs [PDF]
, 2009 This paper discusses a preliminary investigation into the use of base bleed on a production SUV using CFD analysis. The paper shows the methods used in creating the computational model and conducting the analysis, and present the findings to date.
Kennedy, Johnathan J. +2 more
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Flexible conformable hydrophobized surfaces for turbulent flow drag reduction [PDF]
, 2015 In recent years extensive work has been focused onto using superhydrophobic surfaces for drag reduction applications. Superhydrophobic surfaces retain a gas layer, called a plastron, when submerged underwater in the Cassie-Baxter state with water in ...
Fairhurst, David +5 more
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Coherent Near-Wall Structures and Drag Reduction by Spanwise Forcing [PDF]
, 2022 The effect of streamwise-traveling waves of spanwise wall velocity (StTW) on the quasistreamwise vortices (QSV) populating the near-wall region of turbulent channels is studied via a conditional averaging technique applied to flow snapshots obtained via ...
Gatti, D. +5 more
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Turbulent channel flow near maximum drag reduction: simulations, experiments and mechanisms [PDF]
, 2003 It is well known that the drag in a turbulent flow of a polymer solution is significantly reduced compared to Newtonian flow. Here we consider this phenomenon by means of a direct numerical simulation of a turbulent channel flow.
Hulsen, MA +11 more
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Effectiveness of active flow control for turbulent skin friction drag reduction [PDF]
, 2011 The effectiveness of the opposition control method proposed by Choi et al. [J. Fluid Mech. 262, 75 (1994)] has been studied using direct numerical simulations.
Chung, Yongmann M. +3 more
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Change in drag, apparent slip and optimum air layer thickness for laminar flow over an idealised superhydrophobic surface [PDF]
, 2013 Analytic results are derived for the apparent slip length, the change in drag and the optimum air layer thickness of laminar channel and pipe flow over an idealised superhydrophobic surface, i.e. a gas layer of constant thickness retained on a wall.
Newton, M.I. +9 more
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Sustainability of apparent slip in micro-channel flows [PDF]
, 2011 This paper was presented at the 3rd Micro and Nano Flows Conference (MNF2011), which was held at the Makedonia Palace Hotel, Thessaloniki in Greece.
Pawar, PS +3 more
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Assessment of Drag Reduction Devices Mounted on a Simplified Tractor-Trailer Truck Model [PDF]
, 2020 Aerodynamic drag reduction of tractor-trailer combination trucks is critically important to improve their fuel consumption which consequently results in lower emissions.
Yang, Z., Lu, Y., Charles, T.
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Comparison of the Effectiveness of Drag Reduction Devices on a Simplified Truck Model through Numerical Simulation [PDF]
, 2022 The aerodynamic efficiency of trucks is very low because of their non-streamlined box shape, which is subject to practical constraints, leaving little room for improvement in terms of aerodynamic efficiency.
Zhiyin Yang +3 more
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