Added Masses of generic shape bodies interacting with external walls

Carbone, Giovanni; Martinat, Guillaume; Farcy, Dominique; Harion, Jean-Luc

Type de document :

Article dans une revue scientifique: Article original

DOI :

10.1016/j.ast.2019.04.035

URL permanente :

http://hdl.handle.net/20.500.12210/126037

Titre :

Added Masses of generic shape bodies interacting with external walls

Auteur(s) :

Carbone, Giovanni [Auteur]
Ecole nationale supérieure Mines-Télécom Lille Douai [IMT Lille Douai]
Laboratoire de Mécanique des Fluides de Lille - Kampé de Fériet [LMFL]
FLYING WHALES
Martinat, Guillaume [Auteur]
FLYING WHALES
Farcy, Dominique [Auteur]
Laboratoire de Mécanique des Fluides de Lille - Kampé de Fériet [LMFL]
Harion, Jean-Luc [Auteur]
Laboratoire de Génie Civil et Géo-Environnement (LGCgE) - ULR 4515 [LGCgE]
Ecole nationale supérieure Mines-Télécom Lille Douai [IMT Nord Europe]

Titre de la revue :

Aerospace Science and Technology

Pagination :

70-84

Éditeur :

Elsevier

Date de publication :

2019-04-25

ISSN :

1270-9638

Mot(s)-clé(s) :

MASSE AJOUTÉE
DIRIGEABLES

Mot(s)-clé(s) en anglais :

ADDED MASSES
BOUNDARY ELEMENT METHOD
EXTERNAL WALL INTERACTION
AIRSHIPS

Discipline(s) HAL :

Sciences de l'ingénieur [physics]
Physique [physics]

Résumé en anglais : [en]

The aim of this paper is to propose an efficient method to evaluate the Added Masses of generic shape bodies in infinite fluid or in the proximity of external walls. The Added Masses (AM) are the result of the inertial ...
Lire la suite >The aim of this paper is to propose an efficient method to evaluate the Added Masses of generic shape bodies in infinite fluid or in the proximity of external walls. The Added Masses (AM) are the result of the inertial reaction of the fluid in response to an accelerated movement of a body immersed in it. The AM effects are more evident when the body density is similar to that of the surrounding fluid, as in the case of airships. In the takeoff or landing phases, the proximity to the ground causes an increase in the Added Masses that must be correctly estimated to properly size the airship controls. In our method, the calculation of the Added Masses matrix is carried out by the Boundary Element Method (BEM). To verify the accuracy of the results, the study cases are based on simple shapes, whose Added Masses are well known. The analyses in infinite fluid and in the presence of a flat wall are carried out. Numerical results are compared to the theoretical values found in literature. The calculated Added Masses are intrinsically dependent on the mesh definition and the relative error, referred to the theoretical values, depends on the surface and volume discretiza-tion. In the case of interaction between geometries with complex shapes, the influence on the Added Masses is very difficult to predict without a numerical approach. The method proposed gives a good compromise in terms of quality of results and computational cost.Lire moins >

Langue :

Anglais

Comité de lecture :

Oui

Audience :

Internationale

Vulgarisation :

Non

Collections :

Laboratoire Génie Civil et géo-Environnement (LGCgE) - ULR 4515

Source :

Harvested from HAL

Date de dépôt :

2025-02-26T12:57:00Z

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