Vortex method for simulation of a 3D round jet in a cross-stream

Pinon, Grégory; Bratec, Hervé; Huberson, S.; Pignot, G.; Rivoalen, Elie

doi:10.1080/14685240500209981

Cited by 8 publications

(11 citation statements)

References 40 publications

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“…Those particles are emitted at the trailing edge of the obstacle according to the Kutta-Joukowski condition and then advected in a Lagrangian frame thanks to the Navier-Stokes equations for an incompressible flow. The details of the method are presented in [11,17].…”

Section: Comparison With Numerical Resultsmentioning

confidence: 99%

Numerical and experimental study of the interaction between two marine current turbines

Mycek

Gaurier

Germain

et al. 2013

International Journal of Marine Energy

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Abstract-The understanding of interaction effects between marine energy converters represents the next step in the research process that should eventually lead to the deployment of such devices. Although some a priori considerations have been suggested recently, very few real condition studies have been carried out concerning this issue.We therefore ran trials on 1/30 th scale models of three-bladed marine current turbine prototypes in a flume tank. Our work focuses on the case where a turbine is placed at different locations in the wake of a first device. The interaction effects in terms of performance and wake of the second turbine are examined and compared to the results obtained on single-device configurations. Besides, we are currently developing a three-dimensional code based on a vortex method, which will be used in the near future to model more complex layouts.The experimental study shows that the second turbine is deeply affected by the presence of an upstream device and that a compromise between individual device performance and inter-device spacing is necessary. Numerical results show good agreement with the experiment and are promising for the future modelling of turbine farms.

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Section: Comparison With Numerical Resultsmentioning

confidence: 99%

Numerical and experimental study of the interaction between two marine current turbines

Mycek

Gaurier

Germain

et al. 2013

International Journal of Marine Energy

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“…Both power and thrust coefficients (C P and C T ) predictions and wake characterisation are presented and discussed. To this purpose, three-dimensional software, initially issuing from [23,24] is being developed in order to assess the disturbances generated in the sea. This is an unsteady Lagrangian frame software designed to compute the evolution of the wake emitted by the turbine.…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation of the wake of marine current turbines with a particle method

et al. 2012

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This paper presents numerical computations of three bladed horizontal axis marine current turbines in a uniform free upstream current. The unsteady evolution of the turbine wake is taken into account by some three-dimensional software, developed to assess the disturbances generated in the sea. An unsteady Lagrangian method is considered for these computations using "Vortex Method"; a velocityvorticity numerical implementation of the Navier-Stokes equations. The vortex flow is discretised with particles carrying vorticity, which are advected in a Lagrangian frame. The present paper aims at presenting results on both power and thrust coefficient (C P and C T) predictions and wake characterisation, up to ten diameters downstream of the turbine. Moreover, two different marine current turbines configurations are considered: one is taken from literature [1] and the second one is an open-modified version of turbine inspired from previous works [2]. Highlights ► We developed a numerical software for the computation of marine current turbine. ► We used an unsteady Lagrangian implementation of the Navier-Stokes equations. ► Two different turbines are considered, one of them is taken from the literature [1]. ► Both power/thrust coefficients and wake are computed with the same numerical tool. ► All the numerical results are compared to experiments

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“…Le code de simulation numérique de l'écoulement autour d'une hydrolienne est basé sur une méthode Lagrangienne particulaire et présenté en détail dans (PINON et al, 2005 ;PINON et al, 2012). Les équations de Navier-Stokes sont formulées en vitesse / vorticité ( , ) u ω pour un fluide Newtonien incompressible : 2.1 Composante potentielle de la vitesse L'hydrolienne (les 3 pales et la partie centrale) est prise en compte par une méthode intégrale de frontière (cf.…”

Section: Méthode Numérique Utiliséeunclassified

Étude numérique du comportement d'hydroliennes à axe horizontal : vers une modélisation d’un parc d’hydroliennes

Mycek¹,

Gaurier²,

Germain³

et al. 2012

XIIèmes Journées, Cherbourg

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L'implantation et le développement de fermes d'hydroliennes sont soumis à la compréhension des effets d'interaction entre machines. Des essais expérimentaux ont été réalisés dans le canal à houle et courant de l'IFREMER à Boulogne-sur-Mer, sur des maquettes d'hydrolienne 3 pales à axe horizontal, dans le but de caractériser les interactions entre deux hydroliennes alignées avec le courant. En parallèle un code numérique tridimensionnel est développé pour modéliser l'écoulement derrière une hydrolienne. Ce code de calcul est basé sur la méthode Vortex. Il permet entre autres de calculer les efforts et moments sur le rotor ainsi que de tracer des cartes de vitesses en aval de l'hydrolienne. La plupart des études numériques portant sur les interactions entre hydroliennes ne considèrent en réalité qu'une seule hydrolienne, les conditions d'entrée étant issues de l'écoulement calculé à partir d'une autre simulation indépendante. Par ailleurs, les modèles numériques prenant effectivement en compte les effets d'interaction s'appuient en général sur l'approximation du disque poreux. Le code de calcul développé dans le cadre de cette étude permet de considérer une ferme d'hydroliennes dans son ensemble. Nous présentons les premiers résultats numériques et validations obtenus dans ce cadre.

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Vortex method for simulation of a 3D round jet in a cross-stream

Cited by 8 publications

References 40 publications

Numerical and experimental study of the interaction between two marine current turbines

Numerical and experimental study of the interaction between two marine current turbines

Numerical simulation of the wake of marine current turbines with a particle method

Étude numérique du comportement d'hydroliennes à axe horizontal : vers une modélisation d’un parc d’hydroliennes

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