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Experimental investigation of the rewetting process at pressures of 1-7 bar

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dc.contributor.author Hinis, EP en
dc.contributor.author Simopoulos, SE en
dc.date.accessioned 2014-03-01T01:18:59Z
dc.date.available 2014-03-01T01:18:59Z
dc.date.issued 2003 en
dc.identifier.issn 0932-3902 en
dc.identifier.uri http://hdl.handle.net/123456789/15300
dc.relation.uri http://www.scopus.com/inward/record.url?eid=2-s2.0-0037299684&partnerID=40&md5=6779dfe3b3867e0b97d52671f3ba71cd en
dc.subject.classification Nuclear Science & Technology en
dc.subject.other Cooling en
dc.subject.other Interfaces (computer) en
dc.subject.other Numerical analysis en
dc.subject.other Pressure en
dc.subject.other Steam en
dc.subject.other Two phase flow en
dc.subject.other Subcooling en
dc.subject.other Wetting en
dc.title Experimental investigation of the rewetting process at pressures of 1-7 bar en
heal.type journalArticle en
heal.language English en
heal.publicationDate 2003 en
heal.abstract Several water experiments have been carried out to investigate the physical mechanisms relevant to the rewetting phenomena either at atmospheric conditions or in a steam environment. Yet, there seems to be a scarcity of experimental data for the low pressure range from 2 to 7 bar with parameters the liquid film flowrate and the subcooling. An experimental facility to simulate two-phase low-pressure water flow phenomena has been designed, constructed and employed to investigate the rewetting process of hot surfaces in a water-steam environment at pressures in the above range, as well as at atmospheric conditions; the facility is on-line interfaced to computers which control its operation and undertake all the data acquisition tasks. Furthermore, a numerical method to experimentally evaluate the wet front position along the rod was introduced. The present paper describes the experimental work aimed at studying the wet front propagation along a stainless steel fuel rod, in a top-flooding environment in the pressure range of 1-7 bar, wall temperatures up to 550 degreesC and at a liquid flowrate of 10(-3) m(3) min(-1) at both saturated steam conditions and in atmospheric environment with water subcooling in the range 0-75K. The experimental results fitted well to an existing dimensionless rewetting correlation, together with world available vapour environment rewetting data extending its validity down to the pressure of 1 bar Furthermore, the effect of the inlet water subcooling was introduced in to this correlation. en
heal.publisher CARL HANSER VERLAG en
heal.journalName Kerntechnik en
dc.identifier.isi ISI:000181941500002 en
dc.identifier.volume 68 en
dc.identifier.issue 1-2 en
dc.identifier.spage 17 en
dc.identifier.epage 22 en


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