Bedrock incision by bedload: insights from direct numerical simulations [PDF]
Earth Surface Dynamics, 2016 Bedload sediment transport is one of the main processes that contribute to bedrock incision in a river and is therefore one of the key control parameters in the evolution of mountainous landscapes.
G. Aubert, V. J. Langlois, P. Allemand
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Turbulent drag reduction by anisotropic permeable substrates – analysis and direct numerical simulations [PDF]
Journal of Fluid Mechanics, 2019 We explore the ability of anisotropic permeable substrates to reduce turbulent skin friction, studying the influence that these substrates have on the overlying turbulence.
Garazi G'omez-de-Segura +1 more
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Investigation into mechanisms of deflagration-to-detonation using Direct Numerical Simulations [PDF]
E3S Web of Conferences, 2019 Detonation, a combustion phenomenon is a supersonic combustion wave which plays critical role in the theory and application of combustion. This work presents numerical investigation into indirect initiation of detonation using direct numerical ...
Adoghe Joseph +3 more
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Characterisation and Design of Direct Numerical Simulations of Turbulent Statistically Planar Flames
Aerospace, 2022 This work aims to provide support for the design of reliable DNSs for statistically planar flames. Improved simulation design strategies are developed. Therefore, design criteria for the simulative domain are discussed.
Andrej Sternin +4 more
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Direct numerical simulations of ripples in an oscillatory flow [PDF]
Journal of Fluid Mechanics, 2018 Sea ripples are small-scale bedforms which originate from the interaction of an oscillatory flow with an erodible sand bed. The phenomenon of sea ripple formation is investigated by means of direct numerical simulation in which the sediment bed is ...
M. Mazzuoli +2 more
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Direct numerical simulation of turbulent mixing [PDF]
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2013 The results of three-dimensional numerical simulations of turbulent flows obtained by various authors are reviewed. The paper considers the turbulent mixing (TM) process caused by the development of the main types of instabilities: those due to gravitation (with either a fixed or an alternating-sign acceleration), shift and shock waves.
V P, Statsenko +2 more
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Drag reduction by herringbone riblet texture in direct numerical simulations of turbulent channel flow [PDF]
, 2017 A bird-feather-inspired herringbone riblet texture was investigated for turbulent drag reduction. The texture consists of blade riblets in a converging/diverging or herringbone pattern with spanwise wavelength Λf.
H. Benschop, W. Breugem
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Three-Dimensional Direct Numerical Simulations of a Yawed Square Cylinder in Steady Flow
Journal of Marine Science and Engineering, 2022 The effects of yaw angle on wake characteristics of a stationary square cylinder were investigated in terms of the hydrodynamic forces, the vortex shedding frequency, and the vortical structures using direct numerical simulations (DNS) at a Reynolds ...
Xiaofan Lou +5 more
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Direct Numerical Simulations of the Pulsating Flow over a Plane Wall
Journal of Marine Science and Engineering, 2020 The results of direct numerical simulations of the flow generated in a plane duct by a pressure gradient which is the sum of two terms are described.
Giovanna Vittori +2 more
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Laminarization of inhomogeneous turbulent channel flow under stable density stratification
Journal of Fluid Science and Technology, 2021 Effects of buoyancy force stabilizing the disturbances are investigated on a turbulent channel flow bounded by two walls of different temperatures. With a constant mean pressure gradient imposed, the buoyancy force related to the Grashof number (Gr) is ...
Oaki IIDA, Yoshito NAGASE
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