지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학위논문
- 저자정보
- 지도교수
- 강성원
- 발행연도
- 2014
- 저작권
- 서강대학교 논문은 저작권에 의해 보호받습니다.
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The objective of this study is to analyze flow characteristics and performance of a viscosity sensor based on the suspended microchannel resonator (SMR). The assumptions of Sader et al. (2010, JFM) for their analytic solution were verified using the approach of direct numerical simulation. It was found that the effect of the convection term increases with the Reynolds number but is negligible for practical examples of glycerol-water mixtures. From the energy balance based on the integrated energy equations, the energy transfer as well as correlation among different physical phenomena were analyzed, which explains variation of the quality factor around its critical points. In the on-axis cases, both the viscosity and relative velocity gradient correlate highly to energy dissipation. In the off-axis cases, the pumping effect produces additional dissipation which decreases the quality factor but increases the range of measurable viscosity. From the instantaneous velocity and vorticity fields, it was found that acceleration of the SMR movement has a strong effect on the change of the dissipation. Finally, the effects of geometric design parameters of the SMR on performance of the viscosity sensor were investigated based on the flow characteristics.
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