인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록·키워드
Micro shock tubes are miniature devices used for various applications in micro scale technology. Flow characteristics in micro shock tubes are different compared with conventional macro shock tube owing to influence of the smaller diameter. Hence, it generates flow with higher Knudsen number and boundary layer effect. In this paper, the flow characteristics and unsteady wave motions in micro shock tube of different tube diameters, 3mm and 6mm, are investigated by experimental studies. Each shock and expansion propagation at different pressure ratios and diaphragm conditions are also investigated. Driver section pressure was adjusted using compressor and the driven section pressure was maintained at atmospheric condition. The diaphragm was ruptured using a hand operated needle system and was used on two different materials. Time dependent static pressures at 8 different locations were measured using pressure transducers. The results obtained show that as the diameter and initial pressure ratio decrease the shock wave velocity and expansion wave velocity also decrease. The changed diaphragm material also influence to unsteady wave motion.
본문·목차
인공지능 문자 인식 모델을 통해 추출된 텍스트로, 일부 오타나 오류가 포함될 수 있으나 지속적으로 개선 중입니다.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.