Investigation on the Effect of the Bulbous Bow Shape to the Resistance Components and Wave Profiles of Small Ships

Herein, we present an integrated ship re-design/modification strategy that integrates the ‘Computer-Aided Design (CAD)’ and ‘Computational Fluid Dynamics (CFD)’ to modify the ship hull form for better performance in resistance. We assume a modular design and the ship hull form modification focuses on the forward module (e.g. bulbous bow) and aft module (e.g. stern bulb) only. The ship hull form CAD model is implemented with NAPA*TM and CFD model is implemented with Shipflow**TM. The basic ship hull form parameters are not changed and the modifications in some of the technical parameters because of re-designed bulbous bow and stern bulb are kept at very minimum. The bulbous bow is re-designed by extending an earlier method (Sharma and Sha (2005b)) and stern bulb parameters for re-design are computed from the experience gained from literature survey. The re-designed hull form is modeled in CAD and is integrated and analyzed with Shipflow**TM. The CAD and CFD integrated model is validated and verified with the ITTC approved recommendations and guidelines. The proposed numerical methodology is implemented on the ship hull form modification of a benchmark ship, i.e. KRISO container ship (KCS). The presented results show that the modified ship hull form of KCS - with only bow and stern modifications - using the present strategy, results into resistance and propulsive improvement.

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Measurement of Resistance Components

Ship Resistance and Propulsion ◽

10.1017/cbo9780511974113.010 ◽

2011 ◽

pp. 108-143

Author(s):

A. F. Molland ◽

S. R. Turnock ◽

D. A. Hudson

Keyword(s):

Resistance Components

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Test structure and simplified distribution model for identification of base resistance components in self-aligned polysilicon base electrode bipolar transistors

Proceedings International Conference on Microelectronic Test Structures ◽

10.1109/icmts.1995.513958 ◽

2002 ◽

Cited By ~ 2

Author(s):

M. Tanabe ◽

H. Shimamoto ◽

T. Onai ◽

K. Washio

Keyword(s):

Bipolar Transistors ◽

Test Structure ◽

Distribution Model ◽

Base Resistance ◽

Resistance Components ◽

Base Electrode

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Pea–Fusarium solani Interactions Contributions of a System Toward Understanding Disease Resistance

Phytopathology ◽

10.1094/phyto-98-4-0372 ◽

2008 ◽

Vol 98 (4) ◽

pp. 372-379 ◽

Cited By ~ 42

Author(s):

Lee A. Hadwiger

Keyword(s):

Immune Response ◽

Transcription Factor ◽

Disease Resistance ◽

Fusarium Solani ◽

Nonhost Resistance ◽

Chromatin Conformation ◽

Resistance Response ◽

Resistance Components ◽

Pathogenesis Related ◽

Molecular Aspects

This mini-review points to the usefulness of the pea–Fusarium solani interaction in researching the biochemical and molecular aspects of the nonhost resistance components of peas. This interaction has been researched to evaluate the resistance roles of the phytoalexin, pisatin, the cuticle barrier, and the activation of the nonhost resistance response. Concurrently, evaluations of associated signaling processes and the tools possessed by the pathogen to contend with host obstacles were included. The properties of some pathogenesis-related genes of pea and their regulation and contribution to resistance are discussed. A proposed action of two biotic elicitors on both chromatin conformation and the architectural transcription factor, HMG A, is presented and includes time lines of events within the host immune response.

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