Assessment of low-fidelity fluid–structure interaction model for flexible propeller blades

Sodja, Jurij; Breuker, Roeland De; Nožak, Dejan; Dražumerič, Radovan; Marzocca, Pier

doi:10.1016/j.ast.2018.03.044

Cited by 12 publications

(5 citation statements)

References 18 publications

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“…Yang et al [41] found a significant difference between the 2D-and 3D-approach for multi-bodies in a numerical wave tank. Different examples of a full coupling in 3D include propeller blades [42], offshore wind turbine towers [43], OWC [44], and point-absorbing WEC [45]. Alternatively, FLOW-3D leaves the grid constant and changes the discretisation of the geometry depending on the object's movement [46][47][48].…”

Section: Introductionmentioning

confidence: 99%

Comparison of a Floating Cylinder with Solid and Water Ballast

Gabl

Davey

Nixon

et al. 2019

Water

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Modelling and understanding the motion of water filled floating objects is important for a wide range of applications including the behaviour of ships and floating platforms. Previous studies either investigated only small movements or applied a very specific (ship) geometry. The presented experiments are conducted using the simplified geometry of an open topped hollow cylinder ballasted to different displacements. Regular waves are used to excite the floating structure, which exhibits rotation angles of over 20 degrees and a heave motion double that of the wave amplitude. Four different drafts are investigated, each with two different ballast options: with (water) and without (solid) a free surface. The comparison shows a small difference in the body’s three translational motions as well as the rotation around the normal axis to the water surface. Significant differences are observed in the rotation about the wave direction comparable to parametric rolling as seen in ships. The three bigger drafts with free surface switch the dominant global rotation direction from pitch to roll, which can clearly be attributed to the sloshing of the internal water. The presented study provides a new dataset and comparison of varying ballast types on device motions, which may be used for future validation experiments.

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Section: Introductionmentioning

confidence: 99%

Comparison of a Floating Cylinder with Solid and Water Ballast

Gabl

Davey

Nixon

et al. 2019

Water

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“…A clear but noisy trend shows that increasing advance ratios decrease the thrust due to elastic deformations. As indicated by Sodja et al, the advance ratio is no longer a valid measure of similarity with changing operating conditions due to the nonlinearity of loads and stiffnesses [34]. Increasing flight speed reduces the local angle of attack at each blade section.…”

Section: Resultsmentioning

confidence: 99%

On the influence of elasticity on propeller performance: a parametric study

et al. 2023

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The aerodynamic performance of propellers strongly depends on their geometry and, consequently, on aeroelastic deformations. Knowledge of the extent of the impact is crucial for overall aircraft performance. An integrated simulation environment for steady aeroelastic propeller simulations is presented. The simulation environment is applied to determine the impact of elastic deformations on the aerodynamic propeller performance. The aerodynamic module includes a blade element momentum approach to calculate aerodynamic loads. The structural module is based on finite beam elements, according to Timoshenko theory, including moderate deflections. Several fixed-pitch propellers with thin-walled cross sections made of both isotropic and non-isotropic materials are investigated. The essential parameters are varied: diameter, disc loading, sweep, material, rotational, and flight velocity. The relative change of thrust between rigid and elastic blades quantifies the impact of propeller elasticity. Swept propellers of large diameters or low disc loadings can decrease the thrust significantly. High flight velocities and low material stiffness amplify this tendency. Performance calculations without consideration of propeller elasticity can lead to decreased efficiency. To avoid cost- and time-intense redesigns, propeller elasticity should be considered for swept planforms and low disc loadings.

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“…The same solvers were used by Carniea and Qin [17] to carry out a static linear aeroelastic analysis of a High Altitude Long Endurance (HALE) aircraft wing. Sodja et al [18,19] conducted an FSI assessments of flexible Propeller Blades, that were modeled by using an isotropic material. They compared a low fidelity model, based on coupled extended blade-element momentum method and nonlinear beam theory, to high fidelity results obtained from the coupling of Ansys CFX and Ansys Mechanical.…”

Section: B Objectivesmentioning

confidence: 99%

Aeroelastic Response Simulation of a 3D Printed High Altitude Propeller

Malim

Mourousias

Marinus

et al. 2021

Aiaa Aviation 2021 Forum

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This paper presents a steady aeroelastic simulation of a 3D Printed propeller blade designed for a High Altitude Platform Station (HAPS) by using the Fluid-Structure Interaction (FSI) method. On the fluid side, steady RANS simulations are carried out in ANSYS Fluent at an altitude of 16 km using the spring-based smoothing method to update the mesh. On the structure side, three materials are used to model the blade structure: two 3D-printed materials which are tough PLA and Onyx to print the blade core which is covered by a composite layer, and an aluminum blade as a benchmark. In order to model the 3D printed materials in ANSYS Mechanical, experimental tensile and bending tests have been performed first on dedicated samples according to the relevant standards. The experimentally fed material models are then used to perform tensile simulations on representative blade sections which are in turn compared to experimental tensile tests in order to validate the numerical approach. After several FSI-iterations, the aerodynamic performance of the rigid and the deformed blades are compared. It is found that the thrust and the torque generated by the deformed blades (FSI) are greater than those generated by the rigid blade (CFD only) for all materials. Also, the blade efficiency is impacted positively or negatively depending on the operating point.

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Assessment of low-fidelity fluid–structure interaction model for flexible propeller blades

Cited by 12 publications

References 18 publications

Comparison of a Floating Cylinder with Solid and Water Ballast

Comparison of a Floating Cylinder with Solid and Water Ballast

On the influence of elasticity on propeller performance: a parametric study

Aeroelastic Response Simulation of a 3D Printed High Altitude Propeller

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