Non-linear hydrodynamics of thin laminae undergoing large harmonic oscillations in a viscous fluid

Tafuni, Angelantonio; Sahin, Iskender

doi:10.1016/j.jfluidstructs.2014.10.004

Cited by 34 publications

(18 citation statements)

References 61 publications

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“…This scenario illustrates the typical (complex) mechanism of interaction between the vortices themselves and the oscillating lamina. Our observation corroborates the results reported very recently in [18], where analogous vorticity patterns are shown in smoothed particle hydrodynamic (SPH) simulations. However, unlike [18], the vorticity field is here not notably affected by numerical noise.…”

Section: Flow Physicssupporting

confidence: 93%

“…3, the vorticity field is depicted at t=T ¼ 3 for e ¼ 0:075 and e ¼ 0:1, which are representative of small and moderate (normalized) amplitudes, and b ¼ 100 and b ¼ 300, which are representative of small and large (normalized) frequencies. In agreement with the numerical results presented in [18], vorticity is generated by the tips of the lamina. As the two dimensionless parameters grow, the fluid domain affected by the motion of the lamina extends.…”

Section: Flow Physicssupporting

confidence: 90%

“…Several practical applications have already been successfully investigated such as the design of micro-air vehicles [1][2][3][4][5][6], the development of underwater energy harvesting systems [7][8][9] and the prediction of the hydrodynamic loads acting upon the hull of a ship [10][11][12][13]. From a fundamental viewpoint, the computation of the hydrodynamic load acting upon a vibrating beam (in a quiescent viscous fluid) is a contemporary topic of special interest [14][15][16][17][18]. Several analytical and numerical studies have been carried out on this topic during the last decades [19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

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Harmonic oscillations of a thin lamina in a quiescent viscous fluid: A numerical investigation within the framework of the lattice Boltzmann method

Rosis

Lévêque

2015

Computers & Structures

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Section: Flow Physicssupporting

confidence: 93%

Section: Flow Physicssupporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

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Harmonic oscillations of a thin lamina in a quiescent viscous fluid: A numerical investigation within the framework of the lattice Boltzmann method

Rosis

Lévêque

2015

Computers & Structures

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“…Refer to Aureli's and Tafuni's research on Reynolds number, 18,19 turbulence model of numerical simulation was determined to Reynolds number. Only when Re 2300, the fluid flow is laminar; otherwise, it is turbulence.…”

Section: Numerical Solver Set-upmentioning

confidence: 99%

Optimization and simulation of a bionic fish tail driving system based on linear hypocycloid with hydrodynamics

Wang

Qinfeng

et al. 2017

Advances in Mechanical Engineering

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The tail driving system based on linear hypocycloid has the advantages of adjustable phase difference, no quick-return, and combining speed reducer with transformation mechanism. The plane complex movement of the driving system was realized via a motion triangle with a linear hypocycloid planetary gear train and a linkage. In this article, we approach the question of which kind of parameter design can make this driving system more efficient in swimming from a hydrodynamic perspective. First, dynamic and hydrodynamic models were established with momentum theorem, Lagrange theorem, and two-dimensional foil theory. And then, hydrodynamic optimization on kinematic parameters (i.e. caudal peduncle's reciprocation velocity and caudal fin swing angle) and structural parameters (i.e. swing amplitude, V planetary carrier's angle, and sun gear's radius) for a better propulsive efficiency was developed in detail. Second, influences of structural parameters on vortex ring were further conducted by numerical simulation in FLUENT. Finally, the prototype and experimental platform of the designed driving system were established, and the theoretical derivation of lift and lateral forces was testified by experiment.

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“…However, at high mode number both the Reynolds number increases and flow along the length of the cantilever has been shown to dominate 16 . While extensions to the fluid theory have been proposed to address these limitations 17,18 , we instead show how the material properties of the cantilever can be found and used to circumvent such difficulties.…”

mentioning

confidence: 99%

A calibration method for the higher modes of a micro-mechanical cantilever

Shatil

Homer

Picco

et al. 2017

Applied Physics Letters

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General rightsThis document is made available in accordance with publisher policies. Please cite only the published version using the reference above. Full terms of use are available: http://www.bristol.ac.uk/pure/about/ebr-terms A Calibration Method for the Higher Modes of a Micro-mechanical Cantilever Micro-mechanical cantilevers are increasingly being used as a characterisation tool in both material and biological sciences. New non-destructive applications are being developed that rely on the information encoded within the cantilever's higher oscillatory modes, such as AFM techniques that measure non-topographic properties of a sample. However, these methods require the spring constants of the cantilever at higher modes to be known in order to quantify their results. Here, we show how to calibrate the micro-mechanical cantilever and find the effective spring constant of any mode. The method is uncomplicated to implement, using only properties of the cantilever and the fundamental mode that are straightforward to measure.

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Non-linear hydrodynamics of thin laminae undergoing large harmonic oscillations in a viscous fluid

Cited by 34 publications

References 61 publications

Harmonic oscillations of a thin lamina in a quiescent viscous fluid: A numerical investigation within the framework of the lattice Boltzmann method

Harmonic oscillations of a thin lamina in a quiescent viscous fluid: A numerical investigation within the framework of the lattice Boltzmann method

Optimization and simulation of a bionic fish tail driving system based on linear hypocycloid with hydrodynamics

A calibration method for the higher modes of a micro-mechanical cantilever

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