New model to determine forces at on-bottom slender pipelines

Aristodemo, Francesco; Tomasicchio, Giuseppe Roberto; Veltri, Pierangelo

doi:10.1016/j.coastaleng.2010.11.004

Cited by 21 publications

(17 citation statements)

References 22 publications

(77 reference statements)

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“…For combined periodic waves and currents (PC), Table 2 reports the range of H, T, Ur, Q, u cL , u m0 , (current ratio) = u cL /u m0 , KC and Re. Detailed information on all the experimental tests can be found in Aristodemo et al (2011).…”

Section: Experimental Procedures and Set-upmentioning

confidence: 99%

Wave and current forces at a bottom-mounted submarine pipeline

Aristodemo

Tomasicchio

Veltri

2013

Journal of Coastal Research

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Section: Experimental Procedures and Set-upmentioning

confidence: 99%

Wave and current forces at a bottom-mounted submarine pipeline

Aristodemo

Tomasicchio

Veltri

2013

Journal of Coastal Research

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“…Twelve pressure transducers (PDCR1830 model by Druck) were acquired in differential mode due to the Wheatstone-bridge configuration and mounted along the external surface of the cylinder at 30 • intervals. Similar to the experimental tests with wind waves and currents performed by Aristodemo et al [19,20], the transducers were slightly staggered along the longitudinal axis of the central part of the cylinder to avoid the use of a too-large diameter (see Figure 2a). The obtained dynamic pressures, ∆p, were determined by subtracting the static pressures from the records of total pressures measured by the transducers.…”

Section: Experimental Testsmentioning

confidence: 99%

“…The value of a V is the free stream vertical acceleration. It can be observed that, for e/D = 0, the contribution of F V I is usually considered negligible (e.g., [14,20]) even if this force contribution affects the magnitude and the shape of the total vertical force and it is here considered as in the case with e/D = 1 [22]. Indeed, for e/D > 0, the value of F V I becomes relevant in modelling F V , as highlighted by Aristodemo et al [22].…”

Section: Semi-empirical Formulasmentioning

confidence: 99%

“…For bottom-mounted cylinders under the above kind of incident flows, values of hydrodynamic coefficients in Morison-type equations (e.g., [10]) were deduced from field tests [11] as well as smalland large-scale laboratory experiments, and for wide ranges of Keulegan-Carpenter (KC) and Reynolds (Re) numbers [12][13][14][15][16][17][18][19]. More complex models as compared to Morison-type ones and dealing with an improved description of flow-cylinder interaction processes have been also developed [20,21]. More recently, Aristodemo et al [22] performed a laboratory study on non-breaking solitary wave forces with respect to a horizontal cylinder placed at half-water depth that was supported by numerical simulations based on the smoothed particle hydrodynamics technique (e.g., [23][24][25][26][27][28][29]).…”

Section: Introductionmentioning

confidence: 99%

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On-Bottom Stability Analysis of Cylinders under Tsunami-Like Solitary Waves

Tripepi

Aristodemo

Veltri

2018

Water

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A two-dimensional (2D) laboratory investigation on the horizontal and vertical hydrodynamic forces induced by tsunami-like solitary waves on horizontal circular cylinders placed on a rigid sea bed is presented. A series of 30 physical model tests was conducted in the wave channel of the University of Calabria in which a rigid circular cylinder was equipped with 12 pressure transducers placed along its external surface to determine the wave loads, with three wave gauges to record the surface elevation. The observed experimental range was characterized by the prevalence of the inertia component for the horizontal forces and of the lift component for the vertical ones. On the basis of the performance of several time-domain methods, the wave loads and the undisturbed velocity and acceleration derived from the surface elevation of the cylinder section were used to calculate the drag, lift, and horizontal and vertical inertia coefficients in the practical Morison and transverse semi-empirical equations.

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“…Several researchers studied the induced forces on pipes placed near seabeds, such as Aristodemo et al [4] who proposed a new numerical model for the estimation of the horizontal and vertical hydrodynamic forces induced on submarine pipelines exposed to non-linear wave and current conditions.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Extreme Hydrodynamic Loading on Pipelines Part 2: Induced Force Analysis

Ghodoosipour

Stolle

Nistor

et al. 2019

JMSE

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Adequate design of pipelines used for oil, gas, water, and wastewater transmission is essential not only for their proper operation but particularly to avoid failure and the possible extreme consequences. This is even more drastic in nearshore environments, where pipelines are potentially exposed to extreme hydrodynamic events, such as tsunami- or storm-surge-induced inundation. The American Society of Civil Engineers (ASCE), in its ASCE7 Chapter 6 on Tsunami Loads and Effects which is the new standard for tsunami impacts and loading, specifically stresses the need to study loads on pipelines located in tsunami-prone areas. To address this issue, this study is the first of its kind to investigate loading on pipelines due to tsunami-like bores. A comprehensive program of physical model experiments was conducted in the Dam-Break Hydraulic Flume at the University of Ottawa, Canada. The tests simulated on-land tsunami flow inundation propagating over a coastal plain. This allowed to record and investigate the hydrodynamic forces exerted on the pipe due to the tsunami-like, dam-break waves. Different pipe configurations, as well as various flow conditions, were tested to investigate their influence on exerted forces and moments. The goal of this study was to propose, based on the results of this study, resistance and lift coefficients which could be used for the design of pipelines located in tsunami-prone areas. The values of the resistance and lift coefficients investigated were found to be in the range of 1 < CR<3.5 and 0.5 ≤ CL<3, respectively. To that end, the study provides an upper envelope of resistance and lift coefficients over a wide range of Froude numbers for design purposes.

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New model to determine forces at on-bottom slender pipelines

Cited by 21 publications

References 22 publications

Wave and current forces at a bottom-mounted submarine pipeline

Wave and current forces at a bottom-mounted submarine pipeline

On-Bottom Stability Analysis of Cylinders under Tsunami-Like Solitary Waves

Experimental Study on Extreme Hydrodynamic Loading on Pipelines Part 2: Induced Force Analysis

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