Vibration analysis and numerical simulation of fluid–structure interaction phenomenon on a turbine blade

El-hami, M.; Najafi, Mohammad Reza; Bafghi, Mohammad Tashakori

doi:10.1007/s40430-021-02933-6

Cited by 3 publications

(1 citation statement)

References 24 publications

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“…Accompanying Piezoelectric technology with the fluid-solid interaction (FSI) phenomenon is a viable alternative for small-scale turbines because of its lower cost and simpler mechanism [9]. When water waves hit an elastic structure, the imposed mechanical vibration could be converted into electricity via attached piezoelectric materials to the structure.…”

Section: Introductionmentioning

confidence: 99%

A novel floating piezoelectric energy harvesting from water waves: fully-coupled simulation

Khorramdarreh,

Mohammadi,

Ghazanfarian

2023

Preprint

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A fully-coupled-fluid-structure-piezoelectric model is presented based on the finite element method that is capable of modeling piezoelectric harvesters in the presence of free-surface flow and floating lightweight harvesters with arbitrary movements. The Navier-Stokes equations and the phase-field method are employed to describe the free-surface waves. Equations of the conservation of linear momentum in company with the piezoelectric constitutive relations in the strain-charge form are utilized to obtain solid deformation and the electric field intensity. According to the results, attaching mass to the tip of the beam leads to 13.5% rise in the output voltage compared to the state without the attached mass. Another studied factor was the influence of the load resistance on voltage and the output power. The generated voltage grows along with the load resistance until it reaches a constant value. However, the power has an optimum load resistance that is 2.61 times higher than the reference state. The beam's inclination is significant in effectively exploiting water waves due to raising the root mean square (RMS) value of the voltage by 89.53% at an angle of 40 degrees relative to the vertical state. By altering the thickness of the beam from 1 mm to the value of 1.5 mm, the RMS voltage exhibits a considerable upward change of 66%. By increasing the length of the cantilever beam connected to the buoyant structure, and therefore, the indentation of the beam in the water, the output voltage grows, such that a beam with the length of 25 cm shows a 2.92 times increase in the output voltage relative to the beam with a length of 15 cm.

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Section: Introductionmentioning

confidence: 99%

A novel floating piezoelectric energy harvesting from water waves: fully-coupled simulation

Khorramdarreh,

Mohammadi,

Ghazanfarian

2023

Preprint

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Flow-induced vibration analysis in a pump-turbine runner under transient operating conditions

Guo,

Zhou,

Chen

et al. 2023

Engineering Applications of Computational Fluid Mechanics

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A Survey of Aero-Engine Blade Modeling and Dynamic Characteristics Analyses

Zhang,

Wang,

Liu

et al. 2024

Aerospace

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The rotating blade is a key component of an aero-engine, and its vibration characteristics have an important impact on the performance of the engine and are vital for condition monitoring. This paper reviews the research progress of blade dynamics, including three main aspects: modeling of blades, solution methods, and vibration characteristics. Firstly, three popular structural dynamics models for blades are reviewed, namely lumped-mass model, finite element model, and semi-analytical model. Then, the solution methods for the blade dynamics are comprehensively described. The advantages and limitations of these methods are summarized. In the third part, this review summarizes the properties of the modal and vibration responses of aero-engine blades and discusses the typical forms and mechanisms of blade vibration. Finally, the deficiencies and limitations in the current research on blade modeling and vibration analysis are summarized, and the directions for future efforts are pointed out. The purpose of this review is to provide meaningful insights to researchers and engineers in the field of aero-engine blade modeling and dynamic characteristics analysis.

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Vibration analysis and numerical simulation of fluid–structure interaction phenomenon on a turbine blade

Cited by 3 publications

References 24 publications

A novel floating piezoelectric energy harvesting from water waves: fully-coupled simulation

A novel floating piezoelectric energy harvesting from water waves: fully-coupled simulation

Flow-induced vibration analysis in a pump-turbine runner under transient operating conditions

A Survey of Aero-Engine Blade Modeling and Dynamic Characteristics Analyses

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