대한기계학회논문집B (Transactions of the Korean Society of Mechanical Engineers B)
- 제21권10호
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- Pages.1371-1379
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- 1997
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- 1226-4881(pISSN)
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- 2288-5324(eISSN)
DOI QR Code
원추형 오리피스의 유출계수와 캐비테이션에 관한 실험적 연구
Experimental study on the discharge coefficients and cavitation of conical orifices
- 김병찬 (전북대학교 기계설계과) ;
- 윤병옥 (대구효성카톨릭대학교) ;
- 박복춘 (전북대학교 기계설계과) ;
- 조남오 (Hitrol주식회사) ;
- 지대성 (Hitrol주식회사) ;
- 정백순 (전력연구원 원자력발전연구실) ;
- 박경암 (한국표준과학연구원)
- Kim, Byeong-Chan ;
- Yun, Byeong-Ok ;
- Park, Bok-Chun ;
- Jo, Nam-O ;
- Ji, Dae-seong ;
- Jeong, Baek-Sun ;
- Park, Gyeong-Am
- 발행 : 1997.10.01
초록
The high pressure drop is frequently required in the by-pass line of the pump or of the heat exchanger in power plants. However, cavitation produced by a high pressure drop could damage the pipe and pump blades. Conical orifices are adopted to reduce cavitation due to high pressure drop. The discharge coefficients of conical orifice plates were measured by weighing method in the standard water flow system. The discharge coefficients were larger when the ratios of thickness of orifice edge to throat diameter were larger. The noise generated from a conical orifice due to cavitation was measured with a sound level meter and a hydrophone. With increasing the bore diameter of the orifice, the sound pressure level or the noise level due to cavitation became higher. The noise level was suddenly increased at the inception of cavitation.