A harmonic balance technique for the reduced-order computation of vortex-induced vibration

Yao, Weigang; Jaiman, Rajeev K.

doi:10.1016/j.jfluidstructs.2016.06.002

Cited by 12 publications

(3 citation statements)

References 31 publications

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“…Once the NFCs for each harmonic are calculated, the aerodynamic forces of blade caused by wakes can be calculated by Equations (11) and (13). The ROM method in this paper follows the ideas.…”

Section: Rom Methods Of Aerodynamic Forces Of Blade Subjected To Periomentioning

confidence: 99%

“…Yao and Jaiman presented an aeroelastic HB method to model frequency lock-in effect of elastically mounted circular cylinder in free flow during vortex-induced vibration. 13 The results showed that the coupled vortex-induced vibration dynamics and the frequency lock-in phenomenon are accurately captured, while the overall computational cost is significantly reduced. Yao and Marques presented a high-order HB method for a transonic aerofoil forced motion with a moving normal shock wave.…”

Section: Introductionmentioning

confidence: 97%

“…He reviewed the Fourier methods of fluid for turbomachinery applications. Yao and Jaiman presented an aeroelastic HB method to model frequency lock‐in effect of elastically mounted circular cylinder in free flow during vortex‐induced vibration . The results showed that the coupled vortex‐induced vibration dynamics and the frequency lock‐in phenomenon are accurately captured, while the overall computational cost is significantly reduced.…”

Section: Introductionmentioning

confidence: 99%

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An aerodynamic ROM of the blade subjected to wake based on Fourier method for flow

Zhang²,

Xiao

et al. 2018

Numerical Methods in Fluids

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Summary A reduced‐order model (ROM) is presented based on Fourier method for flow to predict aerodynamic forces of blades subjected to periodic time‐varying upstream wakes. In the method, a time‐varying wake is decomposed into harmonic waves by fast Fourier transformation. Using the Fourier method for flow and neglecting the cross‐coupling between harmonics, the aerodynamic forces caused by the wake are represented by a linear combination of harmonics with the same frequencies as the wake. The coefficients of the aerodynamic force harmonics are interpolated at the per‐fitted curves of the normalized Fourier coefficients (coefficients of aerodynamic forces harmonics corresponding to a unit simple harmonic excitation)–frequency relationship. A blade example is used to show the ability of the proposed method. The results indicate that the ROM method can predict the aerodynamic forces of blades caused by wakes efficiently and accurately. The amplitude levels of wakes have a linear impact on the accuracy of the ROM. Neglecting the higher‐order cross‐coupling between the harmonics in the ROM method is acceptable.

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Section: Rom Methods Of Aerodynamic Forces Of Blade Subjected To Periomentioning

confidence: 99%

Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

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