재순환 유동 공기 자가흡입에 의한 마이크로버블 발생 오리피스 노즐 시스템에 대한 실험적 연구An Experimental Study on the Orifice Nozzle System that Generates Micro-bubbles by Self-suction of Air with a Recirculating Flow
- Other Titles
- An Experimental Study on the Orifice Nozzle System that Generates Micro-bubbles by Self-suction of Air with a Recirculating Flow
- Authors
- 오신일; 박상희
- Issue Date
- 2018
- Publisher
- 한국기계가공학회
- Keywords
- Micro-bubble(마이크로버블); Orifice Nozzle(오리피스 노즐); Perforated Plate Nozzle(다공판 노즐); Air Self-suction(공기자가흡입); Bubble Size Distribution(버블크기분포)
- Citation
- 한국기계가공학회지, v.17, no.1, pp.82 - 88
- Journal Title
- 한국기계가공학회지
- Volume
- 17
- Number
- 1
- Start Page
- 82
- End Page
- 88
- URI
- https://scholarworks.bwise.kr/kumoh/handle/2020.sw.kumoh/20097
- DOI
- 10.14775/ksmpe.2018.17.1.082
- ISSN
- 1598-6721
- Abstract
- An experimental study was performed on the orifice nozzle system that generates micro-bubbles by air self-suction using a venturi nozzle. This study experimentally investigates the amount of air sucked into the venturi nozzle and the number of micro-bubbles generated by the orifice nozzle system in Cases 1 and 2. The experimental conditions were varied by changing the diameter of the orifice nozzle (d=2∼7 mm) and the number of holes of the perforated plate nozzle (n = 2-12). In Case 1, the air self-suction was more than 2 LPM at d ≤ 4 mm. When d = 4 mm, the total number of bubbles was 29,777, and it was confirmed that micro-bubbles occupied approximately 65% of the total number of bubbles. In Case 2, the air self-suction was maintained constant at approximately 2.5 LPM regardless of the number (n) of holes. The total amount of bubbles increased when n increased but remained constant at approximately 44,000 when n ≥ 7 EA. It was also confirmed that more than 80% of all bubbles were micro-bubbles when n ≥ 10 EA. Thus, the number of micro-bubbles increased by approximately 15% compared to the experimental result of Case 1, which was optimized with d = 4 mm.
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Collections - Department of Mechanical Engineering > 1. Journal Articles
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