Fluid-structure interaction by the mixed SPH-FE method with application to aircraft ditching

Groenenboom, Paul; Siemann, Martin

doi:10.1260/1750-9548.9.3.249

Cited by 22 publications

(7 citation statements)

References 13 publications

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“…Toso [3] employed the SPH method to simulate the water impact of a generic aircraft fuselage rigid body model, NACA2929 A-body [24]. Groenenboom and Siemann [26] simulated the water impact of generic panels of the guided ditching experimental campaign (cf. Sec.…”

Section: Introductionmentioning

confidence: 99%

Coupled fluid-structure computational methods for aircraft ditching simulations: Comparison of ALE-FE and SPH-FE approaches

Siemann

Langrand

2017

Computers & Structures

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HAL is a multidisciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.

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Section: Introductionmentioning

confidence: 99%

Coupled fluid-structure computational methods for aircraft ditching simulations: Comparison of ALE-FE and SPH-FE approaches

Siemann

Langrand

2017

Computers & Structures

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“…Further works [30,31,32] that attempted to couple the SPH with the structural finite element model provided new possibilities to investigate the structure-fluid interactions with structure deformation taken into consideration during an aircraft ditching event.…”

Section: Introductionmentioning

confidence: 99%

Development of a smoothed particle hydrodynamics method and its application to aircraft ditching simulations

Xiao

Qin

et al. 2017

Aerospace Science and Technology

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The present study addresses the development and validation of a smoothed particle hydrodynamics (SPH) method, particularly to examine its feasibility and capability in hydrodynamics and dynamics of aircraft during ditching. The developed method solves the weakly compressible Navier-Stokes equations coupled with six-degree of freedom dynamics to achieve an accurate prediction of the interaction between the aircraft and the fluid. In this SPH method, a dummy particle wall-boundary condition is automatically implemented to meet the requirement of application on geometrically complex engineering problems. An efficient particle search strategy merging the ideal of Cell-linked list with Vertlet list is proposed to speed up the neighbor particles search process. The present SPH method uses an OpenMP memory-shared parallelization in conjunction with Z-curve reordering to accelerate the computation. Validations have been performed on several classic hydrodynamic problems, where good agreements were achieved via comparing with documented experimental results. The developed SPH method is applied to predict the ditching event of a complex helicopter model. Results demonstrate the ditching process, indicating that the method can be potentially used in aircraft ditching applications.

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“…This exceptional choice was made to prevent an averaging of state variables, to enable tearing, and ease the mixing of water and air fluids. Finally, scale factor for the minimum and maximum smoothing length was also set to 1.0 in the case without air or 1.2 with air [33,37], values which prevented LS-DYNA from changing the smoothing length.…”

Section: Methodsmentioning

confidence: 99%

“…Whereas SPH-FEM coupling is often seen in relevant scientific literature [37,38], different commercial software codes also implement this integrated method. For instance, ABAQUS uses SPH functions to overcome the mesh distortion problem [39], while a wider range of applications can be found as implemented in LS-DYNA [40].…”

Section: Introductionmentioning

confidence: 99%

Dealing with the Effect of Air in Fluid Structure Interaction by Coupled SPH-FEM Methods

et al. 2019

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Smoothed particle hydrodynamics (SPH) and the finite element method (FEM) are often combined with the scope to model the interaction between structures and the surrounding fluids (FSI). There is the case, for instance, of aircrafts crashing on water or speedboats slamming into waves. Due to the high computational complexity, the influence of air is often neglected, limiting the analysis to the interaction between structure and water. On the contrary, this work aims to specifically investigate the effect of air when merged inside the fluid–structure interaction (FSI) computational models. Measures from experiments were used as a basis to validate estimations comparing results from models that include or exclude the presence of air. Outcomes generally showed a great correlation between simulation and experiments, with marginal differences in terms of accelerations, especially during the first phase of impact and considering the presence of air in the model.

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Fluid-structure interaction by the mixed SPH-FE method with application to aircraft ditching

Cited by 22 publications

References 13 publications

Coupled fluid-structure computational methods for aircraft ditching simulations: Comparison of ALE-FE and SPH-FE approaches

Coupled fluid-structure computational methods for aircraft ditching simulations: Comparison of ALE-FE and SPH-FE approaches

Development of a smoothed particle hydrodynamics method and its application to aircraft ditching simulations

Dealing with the Effect of Air in Fluid Structure Interaction by Coupled SPH-FEM Methods

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