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
- 학술저널
- 저자정보
- 발행연도
- 2023.10
- 수록면
- 7 - 19 (13page)
- DOI
- 10.5293/kfma.2023.26.5.007
이용수
초록· 키워드
오류제보하기
Recently single-channel pumps are widely applied for wastewater treatment in Korea. To be able to apply this type of pump in the world, which is different in power frequency, this study uses the affinity law to redesign the impeller geometry of the single-channel pump optimized from the previous work. Meanwhile, the volute is designed by two methods which are the affinity law and the cutting diameter method. The numerical approach is performed by using steady and unsteady Reynolds-averaged Navier-Stokes equations and a shear stress transport reattachment modification (SST k-ω) turbulence model. The hydraulic efficiency curves and internal flow field including contours and streamlines are investigated and evaluated thoroughly. The numerical result is verified by the experimental test based on the 11<SUP>th</SUP>API610 standard. At the design flow rate condition, the novel pump models meet the design requirement with a minimum total head coefficient. The efficiency of the novel models remains almost unchanged compared to the base model. The sweep area of the unsteady radial force distribution in the novel models is smaller than that of the base model at low flow rate and design flow rate conditions while at high flow rate conditions show the opposite. In addition, the distance between the center of the radial force and the origin of the novel models is also reduced compared to the base model. The pressure amplitudes of the novel models are also decreased significantly. These improvements in the novel models mostly result in the reduction in noise and vibration in pump operation.
목차
ABSTRACT
1. Introduction
2. Methodology
3. Numerical modeling and boundary condition
4. Results and discussions
5. Conclusion
References
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