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Pressure Evaluation at Arbitrary Locations in SPH Water Impact Simulations

Siemann, Martin and Groenenboom, Paul (2013) Pressure Evaluation at Arbitrary Locations in SPH Water Impact Simulations. In: 3rd International Conference on Particle-based Methods - Fundamentals and Applications, pp. 961-973. PARTICLES 2013 - III. International Conference on Particle-based Methods - Fundamentals and Applications, 18.-20. Sept. 2013, Stuttgart, Deutschland.

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Abstract

This paper reports the application of the SPH method to the simulation of structures impacting on water with the focus on pressure assessment at arbitrary positions. The study is motivated by the importance of correct and reliable pressure evaluation in aircraft ditching simulations. The presented approach refers to recent developments in the SPH solver of VPS/PAM-CRASH which now allows using dummy particles to probe pressures. Sensitivity studies towards SPH parameters on pressure results are conducted. Pressures near contact interfaces are also compared to the local contact force divided by the surface area. Furthermore, pressure correction methods referred to as Shepard filtering and Rusanov flux, the lowest order approximation of a Riemann solver, are applied and tested. A comparison with results from flat plate ditching experiments published by Smiley [1] is done. Initial validation is based upon results of an experimental campaign of rigid wedge impacts conducted by Battley et al. [2]. Recommendations for best practice are derived from the study and the application to aircraft ditching is discussed.

Item URL in elib:https://elib.dlr.de/85411/
Document Type:Conference or Workshop Item (Speech)
Title:Pressure Evaluation at Arbitrary Locations in SPH Water Impact Simulations
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Siemann, MartinDLR BK-SIUNSPECIFIED
Groenenboom, PaulESI Group NetherlandsUNSPECIFIED
Date:19 September 2013
Journal or Publication Title:3rd International Conference on Particle-based Methods - Fundamentals and Applications
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Page Range:pp. 961-973
Editors:
EditorsEmail
Bischoff, M.UNSPECIFIED
Owen, D. R. J.UNSPECIFIED
Ramm, E.UNSPECIFIED
Wriggers, P.UNSPECIFIED
Status:Published
Keywords:Smoothed Particle Hydrodynamics, Fluid-Structure Interaction, Pressure evaluation, Fixed-Wing Aircraft Ditching, Hydrodynamic Phenomena
Event Title:PARTICLES 2013 - III. International Conference on Particle-based Methods - Fundamentals and Applications
Event Location:Stuttgart, Deutschland
Event Type:international Conference
Event Dates:18.-20. Sept. 2013
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research (old)
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Structures & Materials (old)
Location: Stuttgart
Institutes and Institutions:Institute of Structures and Design > Structural Integrity
Deposited By: Siemann, Dr. Martin
Deposited On:19 Nov 2013 13:39
Last Modified:08 May 2014 23:19

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