%0 Journal Article %T Fluid flow simulation over complex shape objects using image processing to achieve mesh generation %+ Heuristique et Diagnostic des Systèmes Complexes [Compiègne] (Heudiasyc) %+ Département de Recherche en Ingéniérie des Véhicules pour l'Environnement (DRIVE) %A Lassoued, Khaoula %A Sophy, Tonino %A Jouanguy, Julien %A Moyne, Luis Le %< avec comité de lecture %Z 7 %@ 1740-2123 %J International Journal of Simulation and Process Modelling %I Inderscience %V 12 %N 1 %P 54-68 %8 2017 %D 2017 %R 10.1504/IJSPM.2017.082791 %K fluid flow simulation %K 2D mesh %K object recognition %K complex shapes %K vehicle flow %K circular cylinders %K square cylinders %K airfoils %K image processing %K OpenCv %K mesh generation %K Gerris %K digtal images %K digital cameras %K smartphones %K image reconstruction %K CFD %K computational fluid dynamics %Z Engineering Sciences [physics]/Optics / Photonic %Z Computer Science [cs]/Graphics [cs.GR] %Z Computer Science [cs]/Image Processing [eess.IV]Journal articles %X In the domain of flow simulation, avoiding the manual conception and numerisation of the domain can lead to the saving of a certain amount of time. Some processes, using heavy devices like LASER metrology, allow the numerical reconstruction of a real object. The aim of this paper is to propose a more simple tool requiring a commercial digital camera (like a smartphone), to transform a digital picture into a ready to use mesh. Besides simplicity, the tool has to be precise enough to bring accurate simulation results. Then, image processing object detection and reconstruction are used to generate a 2D mesh that can be integrated in a finite volume transient CFD simulation. Cars and airfoils are chosen as objects and the DNS fluid flow Gerris solver performs the simulations. After a validation on a circular shape object, simulations, conducted at different Reynolds number, provide accurate results plotting the Von Karman alley regime. %G English %L hal-01514089 %U https://u-bourgogne.hal.science/hal-01514089 %~ UNIV-BOURGOGNE %~ CNRS %~ UNIV-COMPIEGNE %~ HEUDIASYC %~ DRIVE %~ HDS_SYRI %~ ALLIANCE-SU