Wall-pressure fluctuations of laminar separation bubble based on direct numerical simulation and experiments over a hydrofoil at Re = 450,000

Autor: Jacques-André Astolfi, Antoine Ducoin

Publikováno v: European Journal of Mechanics - B/Fluids. 76:132-144

The objective of this paper is to investigate wall-pressure fluctuations downstream of a Laminar Separation Bubble (LSB) on a laminar NACA66 hydrofoil section, based on Direct Numerical Simulation (DNS) and experimental analysis. DNS is performed usi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::774abedeb59ec7a1df9b4ef3e5154f0c
https://doi.org/10.1016/j.euromechflu.2019.02.001

Unsteady analysis on the instantaneous forces and moment arms acting on a novel Savonius-style wind turbine

Autor: Sukanta Roy, Antoine Ducoin

Publikováno v: Energy Conversion and Management. 121:281-296

This paper aims to present a transient analysis on the forces acting on a novel two-bladed Savonius-style wind turbine. Two-dimensional unsteady Reynolds Averaged Navier Stokes equations are solved using shear stress transport k–ω turbulence model

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f5187cfd71fdc7cf468c0be24e083d17
https://doi.org/10.1016/j.enconman.2016.05.044

Direct numerical simulation and stability analysis of the transitional boundary layer on a marine propeller blade

Autor: Antoine Ducoin, Z. Jing

Publikováno v: Physics of Fluids. 32:124102

It is generally assumed that the cross-flow instability exists on propeller blade boundary layers due to their similarity with the rotating disk flow. However, to the best of our knowledge, there is no experimental or numerical evidence that directly

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::df09b0b95cc88548f19fdba8464fe22a
https://doi.org/10.1063/5.0030070

Experimental and Numerical Investigation of the Fluid-Structure Interaction on a Flexible Composite Hydrofoil under Viscous Flows

Autor: Hervé Le Sourne, Jacques-André Astolfi, Antoine Ducoin, Laetitia Pernod, pascal casari

Publikováno v: Ocean Engineering
Ocean Engineering, Elsevier, 2019, 194, pp.106647. ⟨10.1016/j.oceaneng.2019.106647⟩
Ocean Engineering, Elsevier, 2019, ⟨10.1016/j.oceaneng.2019.106647⟩

International audience; This research investigates the fluid-structure interaction and hydroelastic response of a composite hydrofoil using an innovative joint experimental and numerical method. The main novelties are, first, the use of a state-of-th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c4bf323f893a9c45fb0043c5a2e39446
https://hal.archives-ouvertes.fr/hal-02587704v2/file/2019_OE_LPernod.pdf

Boundary layer transition over a concave surface caused by centrifugal instabilities

Autor: Antoine Ducoin, Abdellah Hadjadj, M. Méndez, Mostafa Safdari Shadloo

Publikováno v: Computers and Fluids
Computers and Fluids, Elsevier, 2018, 171, pp.135-153. ⟨10.1016/j.compfluid.2018.06.009⟩

The laminar-to-turbulent transition process over a concave surface is studied using direct numerical simulations (DNS). It is found that the flow passing over such surface is highly susceptible to develop centrifugal instabilities in the form of Gort

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::46d0f39af8a1e4f78972e1941dd86bd4
https://hal.archives-ouvertes.fr/hal-02084210