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Bibliografías temáticas / Wake-oscillator model

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Artículos de revistas

Literatura académica sobre el tema "Wake-oscillator model"

Autor: Grafiati

Publicado: 10 de marzo de 2023

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Artículos de revistas sobre el tema "Wake-oscillator model"

1

Hagiwara, Tsuyoshi. "A Comparison between Wake Oscillator Model and Fluids Force Coefficients." Proceedings of the Fluids engineering conference 2000 (2000): 76. http://dx.doi.org/10.1299/jsmefed.2000.76.

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2

M, Muthaiah, Ragul Senthilkumar, and Varunkumar S. "Numerical investigation of thermo-acoustic instability in a model afterburner with a simplified model for observed lock-in Phenomena." INTER-NOISE and NOISE-CON Congress and Conference Proceedings 265, no. 3 (2023): 4088–99. http://dx.doi.org/10.3397/in_2022_0585.

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Thermoacoustic oscillations in a gas turbine afterburner are numerically investigated using CFD. A simplified 2-dimensional axisymmetric afterburner with bluff-body stabilized flame is considered in the investigation. Occurrences of both low and high-frequency thermo-acoustic oscillations in the afterburner chamber are observed at specific fuel flow rates. The flow field from the CFD shows the bluff-body vortex shedding frequency to lock-in with the acoustics of the chamber during the thermo-acoustic oscillations. The synchronization and lock-in of bluff-body wake with chamber acoustics happen

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3

Kurushina, Victoria, and Ekaterina Pavlovskaia. "Fluid nonlinearities effect on wake oscillator model performance." MATEC Web of Conferences 148 (2018): 04002. http://dx.doi.org/10.1051/matecconf/201814804002.

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Vortex-induced vibrations (VIV) need to be accounted for in the design of marine structures such as risers and umbilicals. If a resonance state of the slender structure develops due to its interaction with the surrounding fluid flow, the consequences can be severe resulting in the accelerated fatigue and structural damage. Wake oscillator models allow to estimate the fluid force acting on the structure without complex and time consuming CFD analysis of the fluid domain. However, contemporary models contain a number of empirical coeffcients which are required to be tuned using experimental data

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4

Poore, Aubrey B., Eusebius J. Doedel, and Jack E. Cermak. "Dynamics of the Iwan-Blevins wake oscillator model." International Journal of Non-Linear Mechanics 21, no. 4 (1986): 291–302. http://dx.doi.org/10.1016/0020-7462(86)90036-3.

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5

Zhang, Xiulin, Xu Zhang, Shuni Zhou, et al. "A Modified Wake Oscillator Model for the Cross-Flow Vortex-Induced Vibration of Rigid Cylinders with Low Mass and Damping Ratios." Journal of Marine Science and Engineering 11, no. 2 (2023): 235. http://dx.doi.org/10.3390/jmse11020235.

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The classical wake oscillator model is capable of predicting the vortex-induced vibration response of a cylinder at high mass-damping ratios, but it fails to perform satisfactorily at low mass-damping ratios. A modified wake oscillator model is presented in this paper. The modification method involves analyzing the variation law of the add mass coefficient of the cylinder versus reduced velocity and expressing the reference lift coefficient CL0 as a function of the add mass coefficient. The modified wake oscillator model has been demonstrated to have better accuracy in capturing maximum amplit

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6

Kurushina, Victoria, Andrey Postnikov, Guilherme Franzini, and Ekaterina Pavlovskaia. "Optimization of the Wake Oscillator for Transversal VIV." Journal of Marine Science and Engineering 10, no. 2 (2022): 293. http://dx.doi.org/10.3390/jmse10020293.

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Vibrations of slender structures associated with the external flow present a design challenge for the energy production systems placed in the marine environment. The current study explores the accuracy of the semi-empirical wake oscillator models for vortex-induced vibrations (VIV) based on the optimization of (a) the damping term and (b) empirical coefficients in the fluid equation. This work investigates the effect of ten fluid damping variations, from the classic van der Pol to more sophisticated fifth-order terms, and prediction of the simplified case of the VIV of transversally oscillatin

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7

KIKITSU, Hitomitsu, Yasuo OKUDA, and Jun KANDA. "NUMERICAL EVALUATION OF INTERACTION PHENOMENON BY USING WAKE OSCILLATOR MODEL." Journal of Structural and Construction Engineering (Transactions of AIJ) 73, no. 624 (2008): 211–18. http://dx.doi.org/10.3130/aijs.73.211.

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8

Postnikov, Andrey, Ekaterina Pavlovskaia, and Marian Wiercigroch. "2DOF CFD calibrated wake oscillator model to investigate vortex-induced vibrations." International Journal of Mechanical Sciences 127 (July 2017): 176–90. http://dx.doi.org/10.1016/j.ijmecsci.2016.05.019.

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9

Alon Tzezana, Gali, and Kenneth S. Breuer. "Thrust, drag and wake structure in flapping compliant membrane wings." Journal of Fluid Mechanics 862 (January 15, 2019): 871–88. http://dx.doi.org/10.1017/jfm.2018.966.

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We present a theoretical framework to characterize the steady and unsteady aeroelastic behaviour of compliant membrane wings under different conditions. We develop an analytic model based on thin airfoil theory coupled with a membrane equation. Adopting a numerical solution to the model equations, we study the effects of wing compliance, inertia and flapping kinematics on aerodynamic performance. The effects of added mass and fluid damping on a flapping membrane are quantified using a simple damped oscillator model. As the flapping frequency is increased, membranes go through a transition from

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10

Hussin, W. N. W., F. N. Harun, M. H. Mohd, and M. A. A. Rahman. "Analytical modelling prediction by using wake oscillator model for vortex-induced vibrations." JOURNAL OF MECHANICAL ENGINEERING AND SCIENCES 11, no. 4 (2017): 3116–28. http://dx.doi.org/10.15282/jmes.11.4.2017.14.0280.

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