TY - CONF
T1 - Optimization of the hybrid ship transport factor through retrofitted wave cancelling side-hull expansions and bow bulb
AU - Kandasamy, Manivannan
AU - Wu, Ping C.
AU - Bartlett, Scott
AU - Nguyen, Loc
AU - Stern, Frederick
N1 - Funding Information:
The present research is supported by the Office of Naval Research, Grant #N000141110237 and #N000141010529, under the administration of Dr. Roshdy Barsoum. The URANS computations were performed at the NAVY DoD Supercomputing Resource Center.
Publisher Copyright:
© SNAME 13th International Conference on Fast Sea Transportation, FAST 2015. All rights reserved.
PY - 2015
Y1 - 2015
N2 - 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 life 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 modifications to the baseline DTMB-5415 design (open literature surrogate of the existing DDG-51 hull form) 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. A candidate modified 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%.
AB - 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 life 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 modifications to the baseline DTMB-5415 design (open literature surrogate of the existing DDG-51 hull form) 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. A candidate modified 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%.
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U2 - 10.5957/FAST-2015-032
DO - 10.5957/FAST-2015-032
M3 - Paper
AN - SCOPUS:85117598637
T2 - SNAME 13th International Conference on Fast Sea Transportation, FAST 2015
Y2 - 2 September 2015 through 4 September 2015
ER -