For several years we have been working on the development of a computational fluid dynamics ballistics code called FREIN. This code is the result of a strong cooperation between Nexter Munitions and the University of Poitiers. In the last years, efforts have been carried out to improve the 3D modeling. In a fully unsteady way, the interior, intermediate and exterior ballistics were modeled as well as the weapon system environment. The complex phenomena encountered are investigated by an adapted numerical simulation approach using the Euler equations for two immiscible gases. The method involves moving bodies with respect to fixed Cartesian meshes and the aerodynamic forces are used to compute the trajectories. In this paper, theoretical developments and computations have been applied mainly to the simulation of the firing of an advanced 120 mm lightweight tank demonstrator. In comparison with firing experiments, first computation validation results concerning interior ballistics, muzzle brake flow, sabot discard and blast wave propagation and reflection are presented and are very satisfactory.
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e-mail: r.cayzac@nexter-group.fr
e-mail: e.carette@nexter-group.fr
e-mail: thierry.alziary@club-internet.fr
e-mail: fx.renard@nexter-group.fr
e-mail: d.roux@nexter-group.fr
e-mail: p.balbo@nexter-group.fr
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November 2011
Research Papers
Computational Fluid Dynamics and Experimental Validations of the Direct Coupling Between Interior, Intermediate and Exterior Ballistics Using the Euler Equations
Roxan Cayzac,
Roxan Cayzac
Head of Aerodynamics, Technical Direction, Nexter Munitions, 7 Route de Guerry, 18023 Bourges Cedex, France;
e-mail: r.cayzac@nexter-group.fr
Associate Professor of the Universities, National School of Engineering at Bourges
, 88 Boulevard Lahitolle, 18020 Bourges Cedex
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Eric Carette,
Eric Carette
Research Associate in Aerodynamics, Technical Direction, Nexter Munitions, 7 Route de Guerry, 18023 Bourges Cedex,
e-mail: e.carette@nexter-group.fr
France
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Thierry Alziary de Roquefort,
e-mail: thierry.alziary@club-internet.fr
Thierry Alziary de Roquefort
Professor of the University of Poitiers, Expert Consulting in Fluid Mechanics
, 129 Rue des Quatres Roues, 86000 Poitiers, France
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François-Xavier Renard,
François-Xavier Renard
Research Engineer
Engineering Department, Nexter Systems, 7 Route de Guerry, 18023 Bourges Cedex,
e-mail: fx.renard@nexter-group.fr
France
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Dominique Roux,
Dominique Roux
Research Engineer
Engineering Department, Nexter Systems, 7 Route de Guerry, 18023 Bourges Cedex,
e-mail: d.roux@nexter-group.fr
France
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Patrick Balbo,
Patrick Balbo
Product Development Manager
Engineering Department, Nexter Systems, 7 Route de Guerry, 18023 Bourges Cedex,
e-mail: p.balbo@nexter-group.fr
France
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Jean-Noël Patry
Jean-Noël Patry
Product Development Manager, Engineering Department, Nexter Systems 13 Route de la Minière, 78034 Versailles Cedex,
France
e-mail:
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Roxan Cayzac
Head of Aerodynamics, Technical Direction, Nexter Munitions, 7 Route de Guerry, 18023 Bourges Cedex, France;
Associate Professor of the Universities, National School of Engineering at Bourges
, 88 Boulevard Lahitolle, 18020 Bourges Cedex
e-mail: r.cayzac@nexter-group.fr
Eric Carette
Research Associate in Aerodynamics, Technical Direction, Nexter Munitions, 7 Route de Guerry, 18023 Bourges Cedex,
France
e-mail: e.carette@nexter-group.fr
Thierry Alziary de Roquefort
Professor of the University of Poitiers, Expert Consulting in Fluid Mechanics
, 129 Rue des Quatres Roues, 86000 Poitiers, France
e-mail: thierry.alziary@club-internet.fr
François-Xavier Renard
Research Engineer
Engineering Department, Nexter Systems, 7 Route de Guerry, 18023 Bourges Cedex,
France
e-mail: fx.renard@nexter-group.fr
Dominique Roux
Research Engineer
Engineering Department, Nexter Systems, 7 Route de Guerry, 18023 Bourges Cedex,
France
e-mail: d.roux@nexter-group.fr
Patrick Balbo
Product Development Manager
Engineering Department, Nexter Systems, 7 Route de Guerry, 18023 Bourges Cedex,
France
e-mail: p.balbo@nexter-group.fr
Jean-Noël Patry
Product Development Manager, Engineering Department, Nexter Systems 13 Route de la Minière, 78034 Versailles Cedex,
France
e-mail: J. Appl. Mech. Nov 2011, 78(6): 061006 (11 pages)
Published Online: August 24, 2011
Article history
Received:
June 15, 2010
Revised:
January 3, 2011
Published:
August 24, 2011
Citation
Cayzac, R., Carette, E., Alziary de Roquefort, T., Renard, F., Roux, D., Balbo, P., and Patry, J. (August 24, 2011). "Computational Fluid Dynamics and Experimental Validations of the Direct Coupling Between Interior, Intermediate and Exterior Ballistics Using the Euler Equations." ASME. J. Appl. Mech. November 2011; 78(6): 061006. https://doi.org/10.1115/1.4003812
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