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사각채널 내 주기적으로 배열된 반원 리브 영향의 유동해석Analysis of the turbulent flow on the periodically arranged semi-circular ribs in a rectangular channel
- Other Titles
- Analysis of the turbulent flow on the periodically arranged semi-circular ribs in a rectangular channel
- Issue Date
- 2011
- Publisher
- 한국동력기계공학회
- Keywords
- Turbulent kinetic energy; Adverse pressure gradient; RANS equations; SST k - ω model; v2 - f model; 난류 운동 에너지; 역압력 구배; RANS 방정식; SST k - ω 모델; v2 - f 모델
- Citation
- 동력시스템공학회지, v.15, no.2, pp 31 - 36
- Pages
- 6
- Indexed
- KCI
- Journal Title
- 동력시스템공학회지
- Volume
- 15
- Number
- 2
- Start Page
- 31
- End Page
- 36
- ISSN
- 2713-8429
2713-8437
- Abstract
- The flow characteristics on the periodically arranged semi-circular ribs in a rectangular channel for turbulent flow have been investigated numerically. The aspect ratio of the rectangular channel was AR=5, the rib height to hydraulic diameter ratio was 0.07 and rib height to channel height ratio was e/H=0.117. The v2-f turbulence model and SST k-ω turbulence model were used to find the flow characteristics of near the wall which are suited for realistic phenomena. The numerical analysis results show turbulent flow characteristics and pressure drop at the near the wall as observed experimentally. The results predict that turbulent kinetic energy(k) is closely relative to the diffusion of recirculation flow. and v2-f turbulence model simulation results have a good agreement with experimental.
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