Reduction of hydroelastic response of a flexible floating structure by an annular flexible permeable membrane

Selvan, Siluvai Antony; Behera, Harekrushna; Sahoo, T.

doi:10.1007/s10665-019-10015-9

Cited by 21 publications

(6 citation statements)

References 33 publications

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“…In the presence of outer vertical membrane, the convergence of the series solution is shown in Table 1, by evaluating the vertical wave load on the inner circular structure for change in N and dimensionless wavenumber k 0 h. It is seen that for N = 9, the N series converges upto 4 decimal places. On the other hand, upto M = 8, the Bessel series converges, and the same was stated in Mondal et al 14 and Selvan et al 34 Thus, the eigenvalues and Bessel modes say N = 9 and M = 8, respectively, are kept fixed for the computational purpose.…”

Section: Resultsmentioning

confidence: 55%

“…It is seen that for N = 9 , the N series converges upto 4 decimal places. On the other hand, upto M = 8 , the Bessel series converges, and the same was stated in Mondal et al 14 and Selvan et al 34 Thus, the eigenvalues and Bessel modes say N = 9 and M = 8 , respectively, are kept fixed for the computational purpose.…”

Section: Resultsmentioning

confidence: 55%

“…To keep at a desired position, the inner plate is moored in the circumference thus, the boundary conditions is given by (Selvan et al 34 )…”

Section: Mathematical Formulationmentioning

confidence: 99%

“…The impact of permeable plate which is floating horizontally, was investigated by Singla et al 33 to mitigate the hydroelastic response on the VLFS, and they revealed that the plate length and the porosity plays a vital role in the reduction of shear force and strain on the structure. Selvan et al 34 considered a floating outer porous annular membrane to protect an inner circular elastic plate. Their study provided that the appearance of the outer porous membrane minimizes the structural response, as a portion of wave energy gets dissipated other than reflecting another part of wave energy.…”

Section: Introductionmentioning

confidence: 99%

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Mitigation of wave force on a circular flexible plate by a surface-piercing flexible porous barrier

Gayathri

Behera

2020

Proceedings of the Institution of Mechanical Engineers, Part M:

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Wave force acting on a circular flexible plate in the presence of a vertical surface-piercing flexible porous membrane is examined under the hypothesis of linear water wave theory. A semi-analytic solution is developed employing the Fourier-Bessel series expansion method along with the methods of separation of variables and least-squares approximation. To keep the outer flexible membrane at a desired position, clamped-moored condition is used. Appropriate orthogonal mode-coupling relationship for the eigenfunctions of the plate covered region is exploited in the expansion formulas together with the continuity of velocity and pressure for achieving the system of equations and to determine the unknowns. The effects of various physical parameters are analyzed by computing wave load on the structures, plate deflection and flow distribution. It is found that due to the presence of vertical flexible porous membrane, a significant amount of wave force on the plate is reduced. Thus, a cylindrical flexible porous membrane can be implemented to protect the inner circular flexible plate.

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Section: Resultsmentioning

confidence: 55%

Section: Resultsmentioning

confidence: 55%

“…To keep at a desired position, the inner plate is moored in the circumference thus, the boundary conditions is given by (Selvan et al 34 )…”

Section: Mathematical Formulationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Mitigation of wave force on a circular flexible plate by a surface-piercing flexible porous barrier

Gayathri

Behera

2020

Proceedings of the Institution of Mechanical Engineers, Part M:

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“…[28], Selvan et al. [29] and Selvan and Behera [30]). It is worth to be noted that in all these studies, when porous‐effect parameter vanishes, the elastic structure becomes impermeable structure.…”

Section: Introductionmentioning

confidence: 99%

Effect of a floating elastic membrane for stabilizing the film flow down a porous inclined plane

2020

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The effect of a floating elastic membrane on a gravity‐driven flow down an inclined porous plane is examined. The present work extends the earlier work of Anjalaiah et al. [Phys. Fluid, Vol. 25, 022101 (2013)] by including the thin membrane and excluding the insoluble surfactant at the top surface of the flow. The membrane tension emergence from the elasticity, is used to monitoring the surface tension on the top surface of the fluid layer. The fluid flow below the elastic membrane is governed by the Navier–Stokes equations and flow through the porous medium is governed by the Darcy–Brickmann equations. Using the normal mode analysis, two Orr–Sommerfeld systems are derived for each layers and solved by using the spectral collocation method to capture the linear instability. Further, the temporal growth rate and marginal stability curve are analyzed for different set of structural parameters. In general, the instability of free surface flow is more due to the presence of the unstable Yih mode. Both, the membrane tension and the uniform mass distribution rate along the length of the membrane assure to stabilize the surface waves by lowering the temporal growth rate of the disturbances. Consequently, the floating elastic membrane and the porosity of the inclined substrate pretend to suppress the unstable Yih mode and stabilize the flow anatomy. Hence, the floating elastic membrane can be disposed for the lethargic control of the free‐surface flows' instability.

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Water wave propagation over multiple porous barriers with variable porosity in the presence of an ice cover

Sarkar

Paul

2021

Meccanica

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Reduction of hydroelastic response of a flexible floating structure by an annular flexible permeable membrane

Cited by 21 publications

References 33 publications

Mitigation of wave force on a circular flexible plate by a surface-piercing flexible porous barrier

Mitigation of wave force on a circular flexible plate by a surface-piercing flexible porous barrier

Effect of a floating elastic membrane for stabilizing the film flow down a porous inclined plane

Water wave propagation over multiple porous barriers with variable porosity in the presence of an ice cover

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