Conceptual Design and Hydrodynamic Analysis of a High-Speed Sealift Adjustable-Length Trimaran

2008 ◽  
Author(s):  
K. J. Maki ◽  
L. J. Do ◽  
R. M. Scher ◽  
W. M. Wilson ◽  
S. H. Rhee ◽  
...  
Keyword(s):  
Conceptual Design ◽  
Model Test ◽  
High Speed ◽  
Test Program ◽  
Hydrodynamic Analysis ◽  
Numerical Predictions

This paper describes a novel adjustable-length trimaran design for service as a high-speed sealift vessel. Different numerical hydrodynamic tools were exercised to assess the performance of the vessel. An extensive model test program that included powering and seakeeping experiments was conducted to elucidate utility of the numerical predictions.

Conceptual Design and Hydrodynamic Analysis of a High-Speed Deformable Trimaran

2012 ◽  
Vol 204-208 ◽  
pp. 4610-4615 ◽  
Author(s):  
Hong Sheng Yan ◽  
Xiao Ying Xu ◽  
Yan Xin Feng
Keyword(s):  
Conceptual Design ◽  
High Speed ◽  
Hydrodynamic Performance ◽  
Optimal Layout ◽  
Hydrodynamic Analysis ◽  
Cfd Method ◽  
Resistance Performance

This paper proposed a new high-speed deformable trimaran based on DTMB5415, and discussed its advantages and applications. We computed the hydrodynamic performance with CFD method and analyzed the wave-making interference and resistance performance for eight different arrangements of this trimaran. The results show an optimal layout for this high-speed deformable trimaran, which can decrease the resistance of per unit displacement mass about 32%.

Joint High Speed Sealift (JHSS) Segmented Model Test Data Analysis and Validation of Numerical Simulations

2012 ◽  
Author(s):  
Dominic Piro ◽  
Kyle A. Brucker ◽  
Thomas T. O'Shea ◽  
Donald Wyatt ◽  
Douglas Dommermuth ◽  
...  
Keyword(s):  
Data Analysis ◽  
Numerical Simulations ◽  
Test Data ◽  
Model Test ◽  
High Speed ◽  
Segmented Model

Recent Developments in Computational Methods for the Analysis of Ducted Propellers in Open Water

2019 ◽  
Vol 63 (4) ◽  
pp. 219-234
Author(s):  
João Baltazar ◽  
José A. C. Falcão de Campos ◽  
Johan Bosschers ◽  
Douwe Rijpkema
Keyword(s):  
Computational Methods ◽  
Open Water ◽  
Boundary Element Methods ◽  
Navier Stokes ◽  
Hydrodynamic Analysis ◽  
Numerical Predictions ◽  
Ducted Propeller ◽  
Recent Developments ◽  
Propeller Performance ◽  
Ducted Propellers

This article presents an overview of the recent developments at Instituto Superior Técnico and Maritime Research Institute Netherlands in applying computational methods for the hydrodynamic analysis of ducted propellers. The developments focus on the propeller performance prediction in open water conditions using boundary element methods and Reynolds-averaged Navier-Stokes solvers. The article starts with an estimation of the numerical errors involved in both methods. Then, the different viscous mechanisms involved in the ducted propeller flow are discussed and numerical procedures for the potential flow solution proposed. Finally, the numerical predictions are compared with experimental measurements.

Model test of the group piles foundation of a high-speed railway bridge in mined-out area

2016 ◽  
Vol 10 (4) ◽  
pp. 488-498 ◽  
Author(s):  
Xin Liang ◽  
Qian-gong Cheng ◽  
Jiu-jiang Wu ◽  
Jian-ming Chen
Keyword(s):  
Model Test ◽  
High Speed ◽  
Railway Bridge ◽  
High Speed Railway ◽  
Group Piles

Conceptual Design Investigations of a Very High Speed Transpacific Container Vessel

2001 ◽  
Author(s):  
Grant E Hearn ◽  
◽  
Ivo J S Veldhuis ◽  
Riaan van 't Veer ◽  
Robert Jan Steenbergen ◽  
...  
Keyword(s):  
Conceptual Design ◽  
High Speed ◽  
Very High

Conceptual Design of a 50-MW Severe-Accident–Free HTR and the Related Test Program of the HTTR

1998 ◽  
Vol 123 (3) ◽  
pp. 245-258 ◽  
Author(s):  
Kazuhiko Kunitomi ◽  
Yukio Tachibana ◽  
Akio Saikusa ◽  
Kazuhiro Sawa ◽  
Lawrence M. Lidsky
Keyword(s):  
Conceptual Design ◽  
Severe Accident ◽  
Test Program ◽  
Related Test

Il costo dell'Alta Velocitŕ ferroviaria in Italia

2009 ◽  
pp. 203-251
Author(s):  
Claudio Virno
Keyword(s):  
Risk Assessment ◽  
Conceptual Design ◽  
Cost Estimation ◽  
High Speed ◽  
Cost Effective ◽  
Lessons Learned ◽  
High Speed Rail ◽  
Cost Overruns ◽  
Front End ◽  
Complex Projects

- Cost overruns are common in large and complex projects, especially in high speed rail ones. Budgeting for cost escalation is a major issue in the planning phase of these projects. This paper describes lessons learned on high speed rail in Italy and focuses on problems such as initial poor design, tactical budgeting, inadequate cost estimation and risk assessment, etc. The paper discusses possible means to avoid major flaws in the initial conceptual design of mega-projects. There is a growing understanding of the need to focus on the front-end phase in order to achieve more successful and cost-effective projects.

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