Silencing corrugated pipes with liquid addition - Identification of the mechanisms behind whistling mitigation

Eckeveld, A.C. van; Westerweel, J.; Poelma, Christian

doi:10.1016/j.jsv.2020.115495

Cited by 3 publications

(3 citation statements)

References 35 publications

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“…In order to give consideration to calculation accuracy and efficiency simultaneously, N0 is taken as 60, while N is equal to 6 in the following, then after DTM calculation, 1 3.516  = , 2 22.035  = , 3 61.697  = , 4 120.902  = , 5 199.860  = , 6 298.556  = .…”

Section: Dynamic Characteristics By Galerkin Methodsmentioning

confidence: 99%

“…where, the first six natural frequencies calculated by DTM are 1 22.373  = , 2 61.673  = , 3 120.903  = , Θ and t denote angle coordinate and time, respectively, L is the arc length of centerline with opening angle of θc, F denotes the external excitation, with subscripts r and t separately denoting radial and tangential directions, and γ is the angle between the excitation and tangential of the centerline, then some dimensionless parameters can be defined beforehand as follows…”

Section: Same Dynamic Problems For Other Kinds Of Straight Pipes With...mentioning

confidence: 99%

“…For supports, apart from four typical formats including cantilevered, clamped-clamped, clamped-pinned and pinned-pinned [2], some nontraditional formats have sprung up in recent years, e.g., fixed [3][4][5] and movable [6][7] elastic supports, or combined elastic-damping supports [8][9][10] etc. For inner fluid, inviscid fluid flow with steady velocity is usually the first choice by researchers [11][12][13][14][15][16], however, as applications of fluid-conveying pipe has become more and more sophisticated, fluid characterized by pulsating [17][18][19] flow velocity, viscosity [20][21], turbulent flow [22][23], etc. has come into being recently.…”

Section: Introductionmentioning

confidence: 99%

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Dynamics of a cantilevered fluid-conveying straight pipe with centrosymmetric rib plates installed at its fixed end

Zhao,

Cai,

et al. 2023

Preprint

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Rib plates are often used for improving load-bearing capacity, to study the influences of centrosymmetric rib plates installed at the fixed end on the dynamics of a cantilevered fluid-conveying straight pipe, the governing equation is deduced based on D’Alembert principle at first, during this process, the centrosymmetric rib plates are equivalently replaced by the combination of a series of linear and torsional springs whose stiffness coefficients are formulated according to thin plate bending theory. Then Galerkin method is used to discretize the above governing equation, where the shape functions are just the mode functions of cantilevered Euler-Bernoulli straight beam deduced by differential transformation method, the expressions of eigenfunction for flow-induced vibration and steady-state displacement response for forced vibration are obtained subsequently. Numerical experiments of a real water-supplying pipe are carried out, some conclusions never mentioned in published literatures are drawn. The same dynamic problems for other kinds of straight pipes and for curved pipes possessing one clamped end are also discussed. The investigation has reference meaning for optimal design of rib plates in aspects of geometric sizes and materials, also for optimal design of supporting formats of fluid-conveying pipes.

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Section: Dynamic Characteristics By Galerkin Methodsmentioning

confidence: 99%

Section: Same Dynamic Problems For Other Kinds Of Straight Pipes With...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Dynamics of a cantilevered fluid-conveying straight pipe with centrosymmetric rib plates installed at its fixed end

Zhao,

Cai,

et al. 2023

Preprint

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Turbulent flow and friction in a pipe with repeated rectangular ribs

Tummers,

Schenker-van Rossum,

Delfos

et al. 2023

Exp Fluids

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Measurements were conducted in the fully developed turbulent flow in a pipe with internal diameter $$D$$ D at a Reynolds number of $${\text{Re}}_{{\text{D}}} = 1.6 \times 10^{5}$$ Re D = 1.6 × 10 5 . The pipe walls were equipped with regularly spaced square ribs of relative height $$h/D = 0.154$$ h / D = 0.154 , while the pitch-to-roughness height was varied between $$p/h = 1.67$$ p / h = 1.67 and $$p/h = 6.67$$ p / h = 6.67 . The measurements include mean velocity components, Reynolds shear and normal stresses and pressure losses. It is investigated whether the effects of the large roughness on the (time and axially averaged) velocity profile can be described by the classical rough-wall formulation by allowing the value of the von Kármán constant to deviate from its standard value of 0.41.

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On the Development of a Novel Acoustic Flowmeter for High-Temperature Gas-Cooled Reactors

et al. 2022

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Silencing corrugated pipes with liquid addition - Identification of the mechanisms behind whistling mitigation

Cited by 3 publications

References 35 publications

Dynamics of a cantilevered fluid-conveying straight pipe with centrosymmetric rib plates installed at its fixed end

Dynamics of a cantilevered fluid-conveying straight pipe with centrosymmetric rib plates installed at its fixed end

Turbulent flow and friction in a pipe with repeated rectangular ribs

On the Development of a Novel Acoustic Flowmeter for High-Temperature Gas-Cooled Reactors

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