서지주요정보
자기장 하에서 원통용기 내부 공기의 비정상 냉각 특성 = Transient air cool-down characteristics in a closed cylindrical cavity under magnetizing force
서명 / 저자 자기장 하에서 원통용기 내부 공기의 비정상 냉각 특성 = Transient air cool-down characteristics in a closed cylindrical cavity under magnetizing force / 이승호.
저자명 이승호 ; Lee, Seung-Ho
발행사항 [대전 : 한국과학기술원, 2004].
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소장정보

등록번호

8014946

소장위치/청구기호

학술문화관(문화관) 보존서고

MME 04048

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초록정보

A numerical study is made of transient natural convective cool-down process of air under gravity and magnetizing force in a closed cylindrical cavity. An inhomogeneous magnetic field calculated by Biot-Savart's law exerts a magnetizing force on material of high magnetic susceptibility, like a oxygen gas(paramagnetic) in a temperature gradient field. Cooling is accomplished by abruptly lowering the sidewall temperature under strong magnetic field. Computation results without gravity reveal that transient characteristics of stream functions and isotherms change by varying the radius and axial position of a coil. When magnetizing force is parallel to gravity, the maximum of stream function is increased and cooling time is decreased. When magnetizing force is opposed to gravity, as magnetizing force is increased, the maximum of stream function is decreased and cooling time is increased in gravity is dominant, whereas the maximum of stream function is increased and cooling time is decreased in magnetizing force is dominant. The analysis of transient characteristics of cool-down process suggests that magnetizing force can enhance or suppress thermal convection and heat transfer.

서지기타정보

서지기타정보
청구기호 {MME 04048
형태사항 v, 56 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Seung-Ho Lee
지도교수의 한글표기 : 현재민
지도교수의 영문표기 : Jae-Min Hyun
학위논문 학위논문(석사) - 한국과학기술원 : 기계공학전공,
서지주기 참고문헌 : p. 24-26
주제 자기장
자화율
상자성체
magnetizing force
magnetic susceptibility
paramagnetic
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