국내 최대 기계 및 로봇 연구정보

기술보고서

기술보고서 게시판 내용
타이틀	Interactive Flow Phenomena with Thermal Convection and Rotational Flow
저자	Shoichi YOSHIWARA, Hisao AZUMA, Mitsuo OONISHI
Keyword	oscillatory flow; thermal convection; rotational flow; chaotic flow; ultrasonic technique(UVP); Czochralski method
URL	http://send.nal.go.jp/send/jpn/dlpdf.php3/naltr0001343.pdf?id=NALTR0001343
보고서번호	NAL TR-1343
발행년도	1997.12
출처	NAL (National Aerospace Laboratory of Japan)
ABSTRACT	Flow velocity in a Czochralski crystal puller model was measured by an ultrasonic technique. Silicone oil and mercury were used as model liquids and the experiments covered a wide range of Reynolds number Re??02??05. From the velocity measurements, oscillatory characteristics of the flow were obtained. Six groups of different frequencies of the oscillation were found to exist in the experiments without applying temperature differences. The influence of thermal convection on frequencies of the oscillation was clarified in the case o