서지주요정보
입구유속이 시간에 따라 변하는 용기내의 혼합 대류 = Mixed convection in a container with a time-dependent inlet throughflow
서명 / 저자 입구유속이 시간에 따라 변하는 용기내의 혼합 대류 = Mixed convection in a container with a time-dependent inlet throughflow / 이호상.
저자명 이호상 ; Lee, Ho-Sang
발행사항 [대전 : 한국과학기술원, 2002].
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소장정보

등록번호

8012799

소장위치/청구기호

학술문화관(문화관) 보존서고

MME 02056

SMS전송

도서상태

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초록정보

A numerical study is made of mixed convection in a container with a time-dependent inlet throughflow. Numerical solutions are acquires to the governing two-dimensional Navier-Stokes equations for a Boussinesq fluid. Inertia force is imposed by pumping a vertically-upward throughflow and buoyancy force is generated as the difference in temperature between the wall and the throughflow. Inertia force dominant regime, comparable regime and buoyancy force dominant regime occur as to increasing $Gr/Re^2$. In practice, $v=v_{in}[1+\epsilonsin(ft)]$ could arise as a result of temporary non-uniformity embedded in the output from the mechanical device to pump the through flow. Where ε is small but non-zero. The effect of a small pulsating in three regimes is investigated. The numerical results show that in the inertia force dominant regime the resonance of heat flow rate at outlet occurs and depends on reynolds number. in the comparable regime if the forcing frequency is close to the characteristic system brunt-$v\ddot{a}s\ddot{a}ll\ddot{a}$ frequency the resonance of heat flow rate at outlet occurs. In the buoyancy force dominant regime the velocity fluctuations in the interior core are magnified due to internal gravity wave and this behavior is quite insenstitive to the magnitude of ε.

서지기타정보

서지기타정보
청구기호 {MME 02056
형태사항 iv, 46 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Ho-Sang Lee
지도교수의 한글표기 : 현재민
지도교수의 영문표기 : Jae-Min Huyn
학위논문 학위논문(석사) - 한국과학기술원 : 기계공학전공,
서지주기 참고문헌 : p. 22-23
주제 혼합대류
수직관류
진동
공진
mixed convection
vertical throughflow
pulsating
resonance
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