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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
강민재정재환조석규이상봉
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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Jung, Jae Hwan
친환경해양개발연구본부 (심해공학연구센터)
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