DC Field | Value | Language |
---|---|---|
dc.contributor.advisor | Chang, Soon-Heung | - |
dc.contributor.advisor | 장순흥 | - |
dc.contributor.author | Bang, In-Cheol | - |
dc.contributor.author | 방인철 | - |
dc.date.accessioned | 2011-12-14T08:15:56Z | - |
dc.date.available | 2011-12-14T08:15:56Z | - |
dc.date.issued | 2000 | - |
dc.identifier.uri | http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=158113&flag=dissertation | - |
dc.identifier.uri | http://hdl.handle.net/10203/49416 | - |
dc.description | 학위논문(석사) - 한국과학기술원 : 원자력공학과, 2000.2, [ vi, 54 p. ] | - |
dc.description.abstract | The behavior of near-wall bubbles in subcooled flow boiling has been investigated photographically to identify the physical mechanisms of critical heat flux at subcooled and low-quality conditions. Visualization experiments were performed for water flow in vertical rectangular channels under atmospheric pressure for mass fluxes below 2020 kg/㎡s. The thickness and other features of the near-wall bubble layer were examined with the aid of a high-speed camera, a still camera and an 8 mm-camera recorder. The number of activated nucleation sites increased as the wall heat flux was increased. At sufficiently high heat flux about 5-7.5 MW/㎡, the appearance of vapor clot or blanket on the heated surface made a role of an obstacle between main liquid region and the region near heater. At such high heat flux, three characteristic regions were observed in the heated channel: (a) a superheated liquid layer with attached bubbles, (b) a flowing bubble layer consisting of large coalesced bubbles over the attached bubbles, and finally (c) the liquid core. | eng |
dc.language | eng | - |
dc.publisher | 한국과학기술원 | - |
dc.subject | Subcooled flow boiling | - |
dc.subject | Critical heat flux | - |
dc.subject | CHF | - |
dc.subject | Bubble behvaior | - |
dc.subject | 가시화 | - |
dc.subject | 기포 거동 | - |
dc.subject | 미포화 유동 비등 | - |
dc.subject | 임계열유속 | - |
dc.subject | Visualization | - |
dc.title | (A) photographic study on the near-wall bubble behavior in subcooled flow boiling | - |
dc.title.alternative | 미포화 유동 비등에서 가시화를 통한 가열면 근처 기포 거동에 관한 연구 | - |
dc.type | Thesis(Master) | - |
dc.identifier.CNRN | 158113/325007 | - |
dc.description.department | 한국과학기술원 : 원자력공학과, | - |
dc.identifier.uid | 000983243 | - |
dc.contributor.localauthor | Bang, In-Cheol | - |
dc.contributor.localauthor | 방인철 | - |
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