Level-set Based Numerical Simulation of Film Condensation
- 주제(키워드) Film condensation , Iterfacial shear stress , Level-set method , Water recovery
- 발행기관 서강대학교 일반대학원
- 지도교수 손기헌
- 발행년도 2019
- 학위수여년월 2019. 2
- 학위명 석사
- 학과 및 전공 일반대학원 기계공학과
- 실제URI http://www.dcollection.net/handler/sogang/000000063959
- UCI I804:11029-000000063959
- 본문언어 한국어
- 저작권 서강대학교 논문은 저작권보호를 받습니다.
초록/요약
Film condensation in vertical channel is studied numerically using sharp-interface level-set method which has its advantage in tracking the condensate film surface and calculating the phase-change mass flux accurately under the saturation temperature condition at the interface. For validation of the present numerical results, an analytical model of steady laminar film condensation is also developed for different flow configuration. As the vapor velocity increases, the condensation rate is observed to decrease in upward vapor flows whereas it increases in downward vapor flows. The effects of vapor velocity and wall temperature on laminar film condensation in upward and downward vapor flows are investigated. Water recovery behavior is also studied considering effect of non-condensable gas.
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