A partitioned solution approach for the simulation of the dynamic behaviour of flexible marine propellers

Radtke, Lars; Lampe, Tobias; Abdel‐Maksoud, Moustafa; Düster, Alexander

doi:10.1080/09377255.2018.1542782

Cited by 9 publications

(6 citation statements)

References 22 publications

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“…where N is the number of elements in d i n . A detailed investigation of the coupling procedure is given in [2]. The acoustic pressure in the far field is evaluated using on the solution of the fluid solver based on the Ffowcs Williams-Hawkings equation (FWHE).…”

Section: Methodsmentioning

confidence: 99%

“…The simulation was carried out using a time step size of 5 • 10 −4 s and a rotation of ∆ϕ = 2 • . Figure 2 addresses the effect of cavitation, which is considered in the fluid simulations as detailed in [2] and -as illustrated therein -has a severe influence on the acoustic field. Here, we would like to emphasizes, that only by taking into account the blade flexibility (here Young's modulus 2.5 • 10 10 ), i.e.…”

Section: Numerical Investigationsmentioning

confidence: 99%

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Partitioned simulation of the acoustic behavior of flexible marine propellers using finite and boundary elements

Radtke

Lampe

Abdel‐Maksoud

et al. 2021

Proc Appl Math and Mech

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In the last years, classification societies have announced several specifications regarding the , limitation of the noise level of ships. Accordingly, the prediction of the acoustic signature of cavitating propellers, which are the main source for noise generation, has attracted a lot of interest. For an accurate numerical simulation of the underlying physics, the deformation of the propeller has to be taken into account, which results in a fluid-structure interaction (FSI) problem. In order to utilize different discretization methods for the individual sub-problems, we apply a partitioned solution approach. This makes it possible to use a finite element solver for the structural problem, while a boundary element solver is used for the fluid problem. From the solution of the FSI problem, the acoustic pressure in the far field is obtained using the Ffowcs William-Hawking equation.

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Section: Methodsmentioning

confidence: 99%

Section: Numerical Investigationsmentioning

confidence: 99%

Partitioned simulation of the acoustic behavior of flexible marine propellers using finite and boundary elements

Radtke

Lampe

Abdel‐Maksoud

et al. 2021

Proc Appl Math and Mech

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show abstract

“…When the displacements of the structural solver are transferred to the fluid solver according to Eq. ( 2), a displacement correction technique as described in [22] is used. After full rotational speed is reached, the tractions that are computed by the fluid solver are also applied with a ramp in order to avoid instabilities due to abrupt application of loads.…”

Section: Fsi Simulation Of the Kcs Propellermentioning

confidence: 99%

Validation of a partitioned fluid-structure interaction simulation for turbo machine rotors

Lund

González

Neitzel-Petersen

et al. 2022

Ships and Offshore Structures

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In the scope of this work, a partitioned solution approach for the fluid-structure interaction (FSI) simulations of turbo machine rotors is presented. The in-house developed boundary element method (BEM) solver panMARE is used for the fluid simulation, while the structural side is treated with the commercial finite element method (FEM) solver ANSYS. The generic in-house multiphysics coupling library comana is used for the management of the implicit coupling procedure. As the first example, the KRISO container ship propeller is considered. The corresponding FSI simulation is validated for open water test conditions assuming a rigid propeller based on experimental values for the thrust and torque coefficients. Furthermore, results for a flexible propeller simulated with a partitioned coupled FSI simulation in open water are presented. In the second example, the validation of the fully coupled FSI simulation is conducted for a multilayered flexible submersible mixer based on thrust and torque coefficients. The results show a good agreement between the simulations and the experimental data for the rigid body propeller and the flexible rotor of a submersible mixer.

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“…Thus, traditional methods are inadequate to analyze the unsteady bearing forces generated by these propellers. [2][3][4][5] A reliable method of predicting Two fluid models, namely viscous flow model [6][7][8][9][10] and potential flow model, [2][3][4][5][11][12][13][14][15][16][17][18][19][20] may be employed to analyze the unsteady fluid-structure interaction problem of underwater propellers. The corresponding boundary conditions are no-slip condition and nonpenetration condition.…”

Section: Introductionmentioning

confidence: 99%

“…Two fluid models, namely viscous flow model 6–10 and potential flow model, 2–5,11–20 may be employed to analyze the unsteady fluid-structure interaction problem of underwater propellers. The corresponding boundary conditions are no-slip condition and non-penetration condition.…”

Section: Introductionmentioning

confidence: 99%

Dynamic responses of elastic marine propellers in non-uniform flows

Chen

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part M:

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This paper focuses on the development of a three-dimensional panel method in time and frequency domains combined with the finite element method for analyzing the hydroelastic responses of rotating marine propellers in the wake of ships. A fully non-penetration boundary condition imposed on the deformed blade surface is conducted, in which the corrections of both the incoming flow velocities and the normal vectors imposed on the deformed and undeformed blade surface are taken into account. The added-mass and -damping matrices due to strongly coupled fluid-structure interaction are considered. Results of the present method are compared with experimental data available in the literature. It is observed that the fully non-penetration boundary condition applied on the deformed blade surface should be imposed to predict the unsteady performance of elastic propellers, which is due to the change of the added damping predicted by considering different non-penetration boundary conditions.

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A partitioned solution approach for the simulation of the dynamic behaviour of flexible marine propellers

Cited by 9 publications

References 22 publications

Partitioned simulation of the acoustic behavior of flexible marine propellers using finite and boundary elements

Partitioned simulation of the acoustic behavior of flexible marine propellers using finite and boundary elements

Validation of a partitioned fluid-structure interaction simulation for turbo machine rotors

Dynamic responses of elastic marine propellers in non-uniform flows

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