CFD based hydrodynamic optimization and structural analysis of the hybrid ship hull

M. Kandasamy, P. C. Wu, S. Zalek, D. Karr, S. Bartlett, L. Nguyen, F. Stern

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

The US Navy is currently considering the introduction of a Flight III variant beginning with DDG-123 in Fiscal Year 2016. The new design incorporates a new combat system and associated power and cooling upgrades. The overall system improvements increase the payload of the ship and the resulting increased displacement has a negative impact on the service lfe allowance for range, fuel consumption and sea-keeping characteristics. The present objective is to increase the hull displacement without resistance and sea-keeping penalty and with minimal modfications to the baseline DTMB-5415 design (open literature surrogate of the existing DDG-51 hullform) by using retrofitted blisters in the form of side hull expansions and a bow-bulb. The investigation makes use of high-performance CFD computing for analysis of wave cancellation mechanisms, reduced order, rapid hydrodynamic analysis codes, general purpose finite element modeling and structural integrity analysis, sea-keeping evaluation for cost and performance tradeoffs, geometric sensitivity studies and multi-objective optimization. A candidate mod!/Ied 5415 design with both blisters and bow bulb shows a resistance reduction of 11% w.r.t. the baseline 5415 in the design speed range of 15-19 knots, even though the displacement is increased by 8%, such that the transport factor is increased by 19%.

Original languageEnglish
Title of host publicationSociety of Naval Architects and Marine Engineers - Transactions
PublisherSociety of Naval Architects and Marine Engineers
Pages92-123
Number of pages32
Volume122
ISBN (Electronic)9780939773176
Publication statusPublished - 2014 Jan 1
Event2014 SNAME Annual Meeting and Expo and Ship Production Symposium - Houston, United States
Duration: 2014 Oct 222014 Oct 24

Other

Other2014 SNAME Annual Meeting and Expo and Ship Production Symposium
CountryUnited States
CityHouston
Period14-10-2214-10-24

All Science Journal Classification (ASJC) codes

  • Ocean Engineering

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