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.
논문 기본 정보
- 자료유형
- 학위논문
- 저자정보
- 지도교수
- 박노석
- 발행연도
- 2023
- 저작권
- 경상국립대학교 논문은 저작권에 의해 보호받습니다.
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초록· 키워드
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In this study, the degree of uniformity of the flow rate flowing into each module is measured for the external pressure typed low-pressure membrane (microfiltration) filtration process that has been actually applied to water treatment, and computational fluid dynamics (CFD) technique is used to clarify the cause and effect.
Mobile ultrasonic flow meter was used to measure the flow rate flowing from the membrane module pipe to each module, and the CFD technique was used to verify this.
From th results of the actual measurement using ultrasonic flowmeter and CFD simulation, it was confirmed that the outflow flow rate from the branch pipe located at the end of the header pipe was three times higher than that of the branch pipe near the inlet. The reason was that the differential pressure generated between each membrane module was higher toward the end of the header pipe.
When the ratio of the sum of the cross-sectional area of the branch pipe and the cross-sectional area of the header pipe was reduced by about 80 times, it was confirmed that the flow rate flowing from each branch pipe to the membrane module was almost equal. Also, If the flow in the header pipe is transitional or laminar (Reynolds No. is approximately 4,000 or less), the flowrate flowing from each branch pipe to the membrane module can be more even.
Mobile ultrasonic flow meter was used to measure the flow rate flowing from the membrane module pipe to each module, and the CFD technique was used to verify this.
From th results of the actual measurement using ultrasonic flowmeter and CFD simulation, it was confirmed that the outflow flow rate from the branch pipe located at the end of the header pipe was three times higher than that of the branch pipe near the inlet. The reason was that the differential pressure generated between each membrane module was higher toward the end of the header pipe.
When the ratio of the sum of the cross-sectional area of the branch pipe and the cross-sectional area of the header pipe was reduced by about 80 times, it was confirmed that the flow rate flowing from each branch pipe to the membrane module was almost equal. Also, If the flow in the header pipe is transitional or laminar (Reynolds No. is approximately 4,000 or less), the flowrate flowing from each branch pipe to the membrane module can be more even.
목차
Ⅰ. 서 론 11. 상수도의 변천 12. 막 여과 33. 연구 배경 및 목적 12Ⅱ. 이론적 배경 151. 다중유출수로 152. 이중배관원리 173. 전산유체역학 194. ANSYS CFX 26Ⅲ. 연구 방법 281. 대상 막 여과 시설 개요 282. 초음파 유량계를 이용한 유량 분배 실측 293. 실험데이터의 통계 처리 314. 전산유체역학 모사 방법론 32Ⅳ. 실험 결과 361. 유량 분배 실측 실험 결과 362. CFD 모사를 통한 원인 분석 383. 헤더 배관 확장을 통한 유량 균등화 제고 41V. 결 론 45참고문헌 47
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