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Evaluation of Smooth Particle Hydrodynamic methods for teh simulation of helicopter ditching

Toso-Pentecôte, Nathalie und Delsart, David und Vagnot , Alice und Kindervater, Christof (2010) Evaluation of Smooth Particle Hydrodynamic methods for teh simulation of helicopter ditching. AHS International - The Vertical Flight Society - Forum 66, 11.-13. Mai 2010, Phoenix, Arizona, USA.

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Kurzfassung

The presented activities were performed within the GARTEUR Action Group AG15 “Improvement of SPH methods for application to helicopter ditching” that aimed at assessing analytical tools for modelling helicopter impacts on water, with a specific emphasis for the Smooth Particle Hydrodynamic (SPH) formulation. In a first step, the vertical impact on water of simple rigid shapes at various velocities was simulated and compared to test results generated by Politecnico Di Milano. Simulations proved that the order of magnitude of the acceleration and pressure time histories could be very satisfactorily predicted. In a second step, the simulation of a simplified full-scale helicopter ditching was conducted and compared to results coming from an analytical code based on hydrodynamic equations. Though variable agreement was observed between the numerical and analytical data according to the simulated configuration, works however proved that the SPH method could be run over large run times, without numerical instabilities, thus highlighting one significant interest of such modeling method compared to classical Finite-Element solutions.

Dokumentart:Konferenzbeitrag (Vortrag, Paper)
Titel:Evaluation of Smooth Particle Hydrodynamic methods for teh simulation of helicopter ditching
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Toso-Pentecôte, Nathalienathalie.toso@dlr.de
Delsart, DavidONERA
Vagnot , AliceEUROCOPTER
Kindervater, ChristofDLR
Datum:Mai 2010
Status:veröffentlicht
Stichwörter:Smooth Particle Method, water impact, helicopter, fluid/structure interaction
Veranstaltungstitel:AHS International - The Vertical Flight Society - Forum 66
Veranstaltungsort:Phoenix, Arizona, USA
Veranstaltungsart:internationale Konferenz
Veranstaltungsdatum:11.-13. Mai 2010
Veranstalter :AHS International - The Vertical Flight Society
HGF - Forschungsbereich:Verkehr und Weltraum (alt)
HGF - Programm:Luftfahrt
HGF - Programmthema:Drehflügler
DLR - Schwerpunkt:Luftfahrt
DLR - Forschungsgebiet:L RR - Drehflüglerforschung
DLR - Teilgebiet (Projekt, Vorhaben):L - Der robuste Drehflügler
Standort: Stuttgart
Institute & Einrichtungen:Institut für Bauweisen- und Konstruktionsforschung > Strukturelle Integrität
Hinterlegt von: Nathalie Toso
Hinterlegt am:09 Jan 2011 17:58
Letzte Änderung:09 Jan 2011 17:58

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