개선된 PANS 난류 모델을 이용한 둥근 모서리가 있는 사각 실린더 주위 난류 유동에 대한 수치 모사COMPUTATIONAL SIMULATIONS OF TURBULENT FLOWS AROUND A SQUARE CYLINDER WITH ROUNDED CORNERS USING AN IMPROVED PANS MODEL
- Other Titles
- COMPUTATIONAL SIMULATIONS OF TURBULENT FLOWS AROUND A SQUARE CYLINDER WITH ROUNDED CORNERS USING AN IMPROVED PANS MODEL
- Authors
- 강민재; 정재환; 조석규; 이상봉
- Issue Date
- 6월-2021
- Publisher
- 한국전산유체공학회
- Keywords
- 둥근 모서리가 있는 사각 실린더(Square Cylinder with Rounded Corners); 임계 영역(Critical Regime); 하이브리드 PANS(hybridPANS); 오픈폼(OpenFOAM); 항력 계수(Drag Coefficient); 스트롤 수(Strouhal Number)
- Citation
- 한국전산유체공학회지, v.26, no.2, pp 101 - 108
- Pages
- 8
- Journal Title
- 한국전산유체공학회지
- Volume
- 26
- Number
- 2
- Start Page
- 101
- End Page
- 108
- URI
- https://www.kriso.re.kr/sciwatch/handle/2021.sw.kriso/9645
- DOI
- 10.6112/kscfe.2021.26.2.101
- ISSN
- 1598-6071
- Abstract
- Computational simulations of turbulent flows around a square cylinder with rounded corners were performed to investigate turbulent characteristics at sub-critical and critical Reynolds numbers. A hybrid combination of unresolved turbulence viscosity in PANS and sub-grid scale turbulence viscosity in LES provided a good agreement of drag coefficient and vortex shedding frequency with previous results whereas k-ω SST model in RANS simulation failed to describe a transitional behavior of drag coefficient and vortex shedding frequency at sub-critical and critical Reynolds numbers.
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