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

Toso-Pentecôte, Nathalie and Delsart, David and Vagnot , Alice and 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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Abstract

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.

Document Type:Conference or Workshop Item (Speech, Paper)
Title:Evaluation of Smooth Particle Hydrodynamic methods for teh simulation of helicopter ditching
Authors:
AuthorsInstitution or Email of Authors
Toso-Pentecôte, Nathalienathalie.toso@dlr.de
Delsart, DavidONERA
Vagnot , AliceEUROCOPTER
Kindervater, ChristofDLR
Date:May 2010
Status:Published
Keywords:Smooth Particle Method, water impact, helicopter, fluid/structure interaction
Event Title:AHS International - The Vertical Flight Society - Forum 66
Event Location:Phoenix, Arizona, USA
Event Type:international Conference
Event Dates:11.-13. Mai 2010
Organizer:AHS International - The Vertical Flight Society
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:Rotorcraft
DLR - Research area:Aeronautics
DLR - Program:L RR - Rotorcraft Research
DLR - Research theme (Project):L - The Robust Rotorcraft
Location: Stuttgart
Institutes and Institutions:Institute of Structures and Design > Structural Integrity
Deposited By: Nathalie Toso
Deposited On:09 Jan 2011 17:58
Last Modified:09 Jan 2011 17:58

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