Evaluation of green water loads on high-speed containership using CFD

Pham, X.P.; Varyani, K.S.

doi:10.1016/j.oceaneng.2004.10.009

Cited by 29 publications

(14 citation statements)

References 3 publications

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“…Preventative measures include installation of a breakwater on the bow deck. Because its optimum structural design requires analysis of the characteristics of green water impact loads and nonlinear breakwater behaviour, these loads have been investigated extensively on the basis of experimental and numerical methods such as computational fluid dynamics (CFD) (Hamoudi and Varyani, 1998;Nielsen and Mayer, 2004;Pham and Varyani, 2005;Ryu, Chang and Mercier, 2007;Varyani and Pham, 2008;Chen and Yu, 2009). Moreover, the structural behaviour with respect to green water impact loads has been studied on the basis of nonlinear structural mechanics, including finite element methods (FEM) (Varyani, Pham and Olsen, 2005;Pham and Varyani, 2006;Pham, 2008).…”

Section: Introductionmentioning

confidence: 99%

Investigation of structural responses of breakwaters for green water based on fluid-structure interaction analysis

Lee¹,

Heo²,

Kim³

et al. 2012

International Journal of Naval Architecture and Ocean Engineeri

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In the present study, the structural response of breakwaters installed on container carriers against green water impact loads was numerically investigated on the basis of the fluid-structure interaction analysis. A series of numerical studies is carried out to induce breakwater collapse under such conditions, whereby a widely accepted fluidstructure interaction analysis technique is adopted to realistically consider the phenomenon of green water impact loads. In addition, the structural behaviour of these breakwaters under green water impact loads is investigated simultaneously throughout the transient analysis. A verification study of the numerical results is performed using data from actual collapse incidents of breakwaters on container carriers. On the basis of the results of a series of numericalanalyses, the pressure distribution of green water was accurately predicted with respect to wave mass and velocity. It is expected that the proposed analytical methodology and predicted pressure distribution could be used as a practical guideline for the design of breakwaters on container carriers.

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Section: Introductionmentioning

confidence: 99%

Investigation of structural responses of breakwaters for green water based on fluid-structure interaction analysis

Lee¹,

Heo²,

Kim³

et al. 2012

International Journal of Naval Architecture and Ocean Engineeri

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“…* Corresponding author. Email: k.s.varyani@na-me.ac.uk Generally, the inclusion of breakwater onboard greatly helps to reduce the green water loading on deck containers (Varyani et al 2004Pham and Varyani 2005, 2006, 2008.…”

Section: Introductionmentioning

confidence: 99%

“…These panels are located at station 9 and roughly represent the deck containers. Panel loads are recorded via a system of strain gauges (details of which are as in Varyani et al (2004) and Pham and Varyani (2005)). There are also wave probes mounted at stem head and port side at station 9 to measure relative motions.…”

mentioning

confidence: 99%

Whaleback forecastle for reducing green water loading on high-speed container vessels

Varyani

Pham

2008

Ships and Offshore Structures

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This paper investigates the employment of whaleback forecastle tackling the problem of green water. Green water experimental set-up is briefly described, and the hydrodynamic model of green water is introduced. Generic designs of whaleback forecastle are also described, and the development of the model for computational fluid dynamics simulation is explained. Two green water conditions (categorised by its severity) are considered for analysis, and the simulation results are analysed to understand the changes in the green water loading. Conclusions are finally drawn on the effectiveness and adequacy of the whaleback forecastle as an option to reduce green water loading on high-speed container vessels

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“…

Green water와 관련한 다양한 연구들 (Mizoguchi, 1988;Buchner, 1995Buchner, , 1996Kim & Kim, 1996;Pekken, et al, 1999;Kim & Shin, 2005;Pham & Varyani, 2005;Jeong, et al, 2010;Lee, et al, 2012;Ha, et al, 2012;Jeong, et al, 2013) In rough seas, green water shipped on board may impose quite large impact loads on the structures on deck and sometimes result in structure damages. One of the essential tasks of the naval fluid engineers is to provide the design impact loads which are needed for proper design of the structure strength against the green water impacts.

…”

mentioning

confidence: 99%

Computation of the Green Water Design Impact Loads Acting on the Box-Type Structure of a High-Speed Ship's Bow

Kim¹,

Kim²,

Shin³

2017

Journal of the Society of Naval Architects of Korea

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Green water와 관련한 다양한 연구들 (Mizoguchi, 1988;Buchner, 1995Buchner, , 1996Kim & Kim, 1996;Pekken, et al., 1999;Kim & Shin, 2005;Pham & Varyani, 2005;Jeong, et al., 2010;Lee, et al., 2012;Ha, et al., 2012;Jeong, et al., 2013) In rough seas, green water shipped on board may impose quite large impact loads on the structures on deck and sometimes result in structure damages. One of the essential tasks of the naval fluid engineers is to provide the design impact loads which are needed for proper design of the structure strength against the green water impacts. Computation of the design impact load due to green water needs first a process to find the sea condition and the ship cruising condition which cause maximum green water impacts on structures as well as other succeeding processes to compute ship motion responses, green water flows and impact loads. Also, as a bold and practical process, it is needed that the irregular real seas are to be substituted by design regular waves which are equivalent in view points of green water impacts. In this paper, the whole processes to compute the design green water loads acting on bow structure are set up creatively. And the green water design impact loads acting on the box-type structure of a high-speed ship's bow are computed and discussed.

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Evaluation of green water loads on high-speed containership using CFD

Cited by 29 publications

References 3 publications

Investigation of structural responses of breakwaters for green water based on fluid-structure interaction analysis

Investigation of structural responses of breakwaters for green water based on fluid-structure interaction analysis

Whaleback forecastle for reducing green water loading on high-speed container vessels

Computation of the Green Water Design Impact Loads Acting on the Box-Type Structure of a High-Speed Ship's Bow

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