Exploració per tema "Turbulències -- Simulació numèrica"
Ara es mostren els items 1-8 de 8
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Assessment of the symmetry-preserving regularization model on complex flows using unstructured grids
(2012-05-15)
Article
Accés restringit per política de l'editorialThe main objective of the present paper is the assessment of symmetry-preserving regularization models on unstructured meshes. Three different test cases have been studied: the impinging jet flow, the flow past a circular ... -
Direct numerical simulation and Large-Eddy simulations of the turbulent flow around a NACA-0012 airfoil
(2011)
Text en actes de congrés
Accés obertThis paper investigates the capabilities of two subgrid-scale (SGS) models for predicting the complex flow in transitional separated bubbles. We consider here the flow over a NACA 0012 airfoil at Reynolds number Re = 5×10 ... -
Direct numerical simulation of a differentially heated cavity of aspect ratio 4 with Rayleigh numbers up to 10(11) - Part I: Numerical methods and time-averaged flow
(2010-01-31)
Article
Accés restringit per política de l'editorialA set of direct numerical simulations of a differentially heated cavity of aspect ratio 4 with adiabatic horizontal walls is presented. The five configurations selected here (Rayleigh numbers based on the cavity height ... -
Direct numerical simulation of a differentially heated cavity of aspect ratio 4 with Rayleigh numbers up to 10(11) - Part II: Heat transfer and flow dynamics
(2010-01-31)
Article
Accés restringit per política de l'editorialThis is the second of a two-part paper on five direct numerical simulations of a differentially heated cavity of aspect ratio 4 with adiabatic horizontal walls (Rayleigh numbers based on the cavity height. The numerical ... -
Direct Numerical Simulation of the turbulent flow around a NACA 0012 airfoil at different angles of attack
(2011)
Text en actes de congrés
Accés obertDirect numerical simulations (DNS) of the flow dynamics over a NACA 0012 airfoil at Reynolds number Re = 5×104 at different angles of attack are presented. The dynamic of the large separation bubble, characterised by laminar ... -
Low-frequency variations in the wake of a circular cylinder at Re = 3900
(2011)
Comunicació de congrés
Accés obertFlow around cylindrical structures is of relevance for many practical applications. Knowledge of flow-related unsteady loading of such structures is crucial for hydro- and aerodynamic control and design. In order to obtain ... -
Parameter-free symmetry-preserving regularization modeling of a turbulent differentially heated cavity
(2010-06-23)
Article
Accés restringit per política de l'editorialSince direct numerical simulations of buoyancy driven flows cannot be computed at high Rayleigh numbers, a dynamically less complex mathematical formulation is sought. In the quest for such a formulation, we consider ... -
Symmetry-preserving regularization of wall-bounded turbulent flows
(2011)
Comunicació de congrés
Accés restringit per política de l'editorialThe incompressible Navier-Stokes equations constitute an excellent mathematical modelization of turbulence. Unfortunately, attempts at performing direct simulations are limited to relatively low-Reynolds numbers because ...