Measurement of bottom pressures on planing craft

Grigoropoulos, GJ; Damala, DP

dc.contributor.author	Grigoropoulos, GJ	en
dc.contributor.author	Damala, DP	en
dc.date.accessioned	2014-03-01T02:41:56Z
dc.date.available	2014-03-01T02:41:56Z
dc.date.issued	2001	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/30676
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-2942665778&partnerID=40&md5=1f5e45dae476cb56d1a1ce85532235c6	en
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-2942665778&partnerID=40&md5=1f5e45dae476cb56d1a1ce85532235c6	en
dc.subject.other	Computer simulation	en
dc.subject.other	Data reduction	en
dc.subject.other	Hydrodynamics	en
dc.subject.other	Mathematical models	en
dc.subject.other	Pressure effects	en
dc.subject.other	Pressure transducers	en
dc.subject.other	Sailing vessels	en
dc.subject.other	Bottom structure	en
dc.subject.other	High speed crafts	en
dc.subject.other	Scantlings	en
dc.subject.other	Pressure measurement	en
dc.title	Measurement of bottom pressures on planing craft	en
heal.type	conferenceItem	en
heal.publicationDate	2001	en
heal.abstract	The knowledge of the pressures on the bottom of vessels sailing at high speeds is essential for the design bottom plate and its scantlings. However, only a few semi-empirical methods based on scarce full or model scale experimental results can be found in the open literature. The shortage of measured data is partly due to the complexity of the measurements. This kind of data is valuable for validating the proposed analytical methods and for providing background to the rules issued by the classification societies. Two methods are reviewed in this paper to measure the pressure distribution on the bottom of fast ships. In the former, membrane-type pressure sensors are fitted on a grid of points on the bottom of the vessel, while in the latter Pitot-tubes are connected to digital pressure transducer through a 48-channel fluid switch wafer. The pros and cons of both methods, which were tested in the Towing Tank of the Laboratory for Ship and Marine Hydrodynamics of the National Technical University of Athens, are presented and discussed.	en
heal.journalName	Computational Engineering	en
dc.identifier.spage	829	en
dc.identifier.epage	837	en