스파이럴 케이싱 설부의 누설벽이 프란시스 수차의 수력학적 성능에 미치는 영향

다국어 초록 (Multilingual Abstract)

This paper presents the effect of a leakage wall on the hydraulic performance and internal flow characteristics of spiral casing tongue in a Francis hydro turbine. For hydraulic performance analysis of the Francis hydro turbine, three-dimensional steady state Reynolds-averaged Navier-Stokes calculation was conducted with a shear stress transport turbulence model. The validation of the numerical results was performed by comparing with the experimental results for power and efficiency. The total pressure distributions of each component for the real scale Francis hydro turbine and its scaled model, respectively, were investigated to understand effect of a leakage wall on the spiral casing for the internal flow characteristics at each component. The effect of a leakage wall indicated that it can be applied to design of spiral casing for providing good performance and lower loss in a Francis hydro turbine.

참고문헌 (Reference)

1 김진혁, "주거환기용 시로코홴의 공력 및 소음 특성 연구" 한국유체기계학회 13 (13): 19-24, 2010

2 전진현, "유출각 변화에 따른 프란시스 수차 성능해석" 한국유체기계학회 16 (16): 10-14, 2013

3 김진우, "실험계획법(2k 요인시험)을 활용한 날개각의 변화가 엇회전 펌프수차의 효율에 미치는 영향에 관한 연구" 한국신·재생에너지학회 13 (13): 17-26, 2017

4 Zhenmu Chen, "Internal Flow Characteristics of a Francis Hydro Turbine Model by Internal Flow Passage Shapes" 한국유체기계학회 18 (18): 19-25, 2015

5 "IEC 60193 Ed. 2.0 b: 1999, Hydraulic Turbines, Storage Pumps and Pump-Turbines Model Acceptance Tests"

6 Chen, Z., "Francis Turbine Blade Design on the Basis of Port Area and Loss Analysis" 9 (9): 164-175, 2016

7 Heo, M. W., "Aerodynamic and Aeroacoustic Optimization for Design of a Forward-curved Blades Centrifugal Fan" 230 (230): 154-174, 2016

8 "ANSYS CFX-17.1 Solver Theory"