Full scale measurements of pressure field induced on the quay wall by bow thrusters – indirect method for seabed velocities monitoring

Abramowicz-Gerigk, Teresa; Burciu, Zbigniew; Górski, Wojciech; Reichel, Maciej

doi:10.1016/j.oceaneng.2018.05.036

Cited by 11 publications

(8 citation statements)

References 4 publications

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“…Most of the measurements during the ferries normal operation showed the small values of bow thruster generated pressure, no greater than 3 kPa. The highest-pressure values up to 8 kPa were collected for Ferry 1 [ 8 ]. The bow thruster openings projections of Ferry 1 in moored position were between the C3, C4 and C6, C7 measuring lines.…”

Section: Resultsmentioning

confidence: 99%

“…The bow thruster-generated flow distribution on the quay wall and seabed described by Schmidt [ 9 ] was divided into five zones including flow on the quay wall—zone 3 and, on the seabed, zone 5. The scheme of the flow distribution is presented in Figure 11 a [ 8 ].…”

Section: Resultsmentioning

confidence: 99%

“…The supporting structure was attached to the quay wall, made of the Larssen sheet piles with screw pins. The 131S (II) BCM Sensor Technologies piezo-resistive pressure transmitters ( , accessed on 27 October 2022) were integrated with the microprocessor control system and communication module [ 8 ].…”

Section: Methodsmentioning

confidence: 99%

“… Bow thruster-generated flow distribution: ( a ) 5 zones of flow proposed by Schmidt cited in [ 8 ]; ( b – d ) CFD simulation—image of the highest velocity on the quay wall and on the seabed for both the bow thrusters operating with the thrusts equal to 105 kN, 130 kN and 160 kN during the period of time of 10 s, respectively. …”

Section: Figurementioning

confidence: 99%

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Ship Berthing and Unberthing Monitoring System in the Ferry Terminal

Abramowicz-Gerigk

Jachowski

2022

Sensors

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This paper presents a monitoring system designed to increase the safety of the quay structure in ferry terminals, in which, during berthing and unberthing maneuvers, propeller and thruster-generated jets may damage the seabed protection, threatening the stability of the berth structure. Direct measurement of flow velocity on the seabed is not possible due to the possibility of its damage, therefore dynamic pressure measurement of the quay wall was used within the system. The relationship between the pressure on the quay wall and flow velocity on the seabed was determined using real-scale CFD simulation of the flow field generated during berthing and unberthing maneuvers. The paper focuses on the computations of the pressure distribution generated by bow thrusters. These computations made it possible to determine the velocity field in the time domain. Their results, verified using real-scale measurements, are in line with generally accepted empirical methods.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Figurementioning

confidence: 99%

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Ship Berthing and Unberthing Monitoring System in the Ferry Terminal

Abramowicz-Gerigk

Jachowski

2022

Sensors

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“…Studies on ship thrusters focus on their hydrodynamic properties and performance (Bulten and Suijkerbuijk, 2013;Yu and Yang, 2016;Abramowicz-Gerigk and Gerigk, 2020;Feng et al, 2020) and their operation, as well as berthing and deberthing simulation results (Bui et al, 2010;Tran and Im, 2012;Jeong et al, 2012;Benedict et al, 2017;Artyszuk and Zalewski, 2021). To understand the effects of thruster jet flow, flow characteristics around the quay wall (van Blaaderen, 2006;Irene, 2020), pressure (Abramowicz-Gerigk et al, 2018), andbottom scour (van den Brink, 2014;Roelse, 2014;Galal et al, 2016;Galal et al, 2019) have been analyzed. However, the behavior of the quay wall corresponding to the direct action of the thruster jet flow has hardly been discussed.…”

Section: Introductionmentioning

confidence: 99%

Impact of the Thruster Jet Flow of Ultra-large Container Ships on the Stability of Quay Walls

Hwang

Yeom²,

Seo

et al. 2021

J. Ocean Eng. Technol.

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As the size of ships increases, the size and output power of their thrusters also increase. When a large ship berths or unberths, the jet flow produced from its thruster has an adverse effect on the stability of quay walls. In this study, we conducted a numerical analysis to examine the impact of the thruster jet flow of a 30,000 TEU container ship, which is expected to be built in the near future, on the stability of a quay wall. In the numerical simulation, we used the fluid–structure interaction analysis technique of LS-DYNA, which is calculated by the overlapping capability using an arbitrary Lagrangian Eulerian formulation and Euler–Lagrange coupling algorithm with an explicit finite element method. As the ship approached the quay wall and the vertical position of the thruster approached the mound of the quay wall, the jet flow directly affected the foot-protection blocks and armor stones. The movement and separation of the foot-protection blocks and armor stones were confirmed in the area affected directly by the thruster jet flow of the container ship. Therefore, the thruster jet flows of ultra-large ships must be considered when planning and designing ports. In addition, the stability of existing port structures must be evaluated.

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