정량펌프에서의 cavitation발생 억제를 위한 수치해석적 연구Numerical Analysis for control the cavitation in metering pump
- Other Titles
- Numerical Analysis for control the cavitation in metering pump
- Authors
- 김상우; 김진욱; 김도연; 이도형
- Issue Date
- Dec-2009
- Publisher
- 한국유체기계학회
- Keywords
- Pressure drop(압력강하); Dynamics-mesh(가변 격자); Metering pump(정량펌프); cavitation(공동현상)
- Citation
- 유체기계 연구개발 발표회 논문집, pp.137 - 142
- Indexed
- OTHER
- Journal Title
- 유체기계 연구개발 발표회 논문집
- Start Page
- 137
- End Page
- 142
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/40622
- Abstract
- Diaphragm metering pump has been known to allow exact amount of flow rate by combining two sets of the pumps and superposing the two different phase of flow rate. However, contrary to the direct plunge type metering pump, the diaphragm type of metering pump is known to yield pulsation due to indirect pushing mechanism via working fluid between piston & diaphragm. The working fluid could get easily involved with cavitation because of rapid change of piston movement and abrupt fluid passage area change. The research was devoted to reducing pulsation in diaphragm metering pump by the use of numerical analysis. The numerical study was conducted by considering unsteady, incompressible, turbulent (k-ε model) flow with moving boundary. Pressure drop at peculiar point of the flow field is focal point of research in order to reduce cavitation. Successful pulsation reduction through geometry modification, is validated by the actual experiments that revealed overall performance of the system with & without modification.
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Collections - COLLEGE OF ENGINEERING SCIENCES > DEPARTMENT OF MECHANICAL ENGINEERING > 1. Journal Articles
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