Prediction of Squat for Underkeel Clearance

Briggs, Michael J.; Vantorre, Marc; Uliczka, Klemens; Debaillon, Pierre

doi:10.1142/9789812819307_0026

Cited by 13 publications

(5 citation statements)

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“…Naturally, only those applicable to canal case-studies are examined. For a complete description of the mathematical background, the reader is referred to Briggs (2009Briggs ( , 2006, Briggs et al (2013Briggs et al ( , 2009b, and Terziev et al (2018). A description of the mathematical background of the empirical formulae is given in the Appendix.…”

Section: Empirical Methodsmentioning

confidence: 99%

Numerical and experimental study on hydrodynamic performance of ships advancing through different canals

et al. 2020

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In international shipping, there are several waterways that are widely viewed as bottlenecks. Among these is the Suez Canal, where recent expansions have taken place. Although the Suez Canal has a high importance in international shipping, little research has been carried out in maximising the number of ships capable of traversing for a set period of time. The present study aims to examine hydrodynamic phenomena of ships advancing through the Suez Canal in the allowed speed range to determine the relative effects of the canal depth and /or width restrictions on the overall ship sailing performance. A rectangular canal is also included as a reference to gauge the effects of varying canal cross-section. The present study combines experimental, numerical, analytical and empirical methods for a holistic approach in calm water. As a case-study, the KCS hullform is adopted, and analysed experimentally, via Computational Fluid Dynamics, using the slender body theory, and empirical formulae. The results reveal strong coupling between the canal's cross section and all examined parameters.

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Section: Empirical Methodsmentioning

confidence: 99%

Numerical and experimental study on hydrodynamic performance of ships advancing through different canals

et al. 2020

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“…A change of the trim orientation dependent on the ship speed is not covered with these formulae. Examples of different squat values for a bulk carrier calculated by formulae using the same input parameters are presented by Demirbilek and Sargent (1999) and for different ships by Briggs et al (2009).…”

Section: Empirical Formulae and Analytical Methodsmentioning

confidence: 99%

Robustness and quality of squat predictions in extreme shallow water conditions based on RANS-calculations

Bechthold

Kastens

2020

Ocean Engineering

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“…The correlation study between the crucial parameters and measured drawdown revealed that the highest correlation was for ship dimensions, mainly the ship length and ship blockage ratio (ratio between the submerged area of the ship to the cross-sectional river area). Interestingly, it was found that drawdown height is not dependent on the ship speed and depth Froude number, which is considered a key parameter for water surface fluctuations in restricted waterways (Briggs et al 2009).…”

Section: Empirical Modelling Of Ship Wavesmentioning

confidence: 99%

Impact of the Ship Waves and Tidal Forces on the Sediment Resuspension in Inland Waterways

Chakraborty,

Sriram,

Murali

2023

Int. Conf. Coastal. Eng.

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Ship movement in narrow intertidal waterways generate complex hydrodynamics and sediment resuspension along with tides. In order to investigate the complex hydrodynamics and induced sediment concentration, field measurements were performed at the Falta stretch of the Hooghly river, India. The low frequency primary waves and high frequency secondary waves are dominant in this region as ships navigate in subcritical range due to complex river bathymetry. The time-frequency analysis is a useful tool to separate the ship-generated waves with the tides. The modest performance of the existing empirical models led to the development of the new empirical models for the prediction of ship-generated primary waves. The tides are the dominant factor for the sediment resuspension during the spring period whereas the ship-induced waves are dominant in neap period. The overall contribution of the ship waves on sediment resuspension during the tenure of field measurement was 24.66percent.

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Prediction of Squat for Underkeel Clearance

Cited by 13 publications

References 0 publications

Numerical and experimental study on hydrodynamic performance of ships advancing through different canals

Numerical and experimental study on hydrodynamic performance of ships advancing through different canals

Robustness and quality of squat predictions in extreme shallow water conditions based on RANS-calculations

Impact of the Ship Waves and Tidal Forces on the Sediment Resuspension in Inland Waterways

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