Study on the Similarity of Laminar Flows between in Orthogonally Rotating Square Duct and Stationary Curved Squared Duct

Title & Authors
Study on the Similarity of Laminar Flows between in Orthogonally Rotating Square Duct and Stationary Curved Squared Duct
Lee, Gong-Hui; Baek, Je-Hyeon;

Abstract
In this study, it is numerically revealed that the secondary flow due to the Coriolls force in a straight duct rotating about an axis perpendicular to that of the duct is analogous to that caused by the centrifugal force in a stationary curved duct. Dimensionless parameters $\small{K_{LR}=Re/\sqrt{Ro}}$ and Rossby number in a rotating straight duct were used as a set corresponding to Dean number and curvature ratio in a stationary curved duct. When the value of Rossby number and curvature ratio is large, it is shown that the flow field satisfies the asymptotic invariance property, that is, there are strong quantitative similarities between the two flows such as friction factors, flow patterns, and maximum axial velocity magnitudes for the same values of $\small{K_{LR}}$ and Dean number.
Keywords
Secondary Flow;Coriolis Force;Centrifugal Force;Duct Flow;Fully-Developed Laminar Flow;
Language
Korean
Cited by
1.
임의의 종횡비를 가지는 수직축을 중심으로 회전하는 직관과 정지한 고고간 내부의 층류 유동의 유사성에 관한 수치적 연구,이공희;백제현;

대한기계학회논문집B, 2002. vol.26. 6, pp.842-849
2.
회전하는 정사각 단면 U자형 곡관 내부의 유동 발달에 관한 수치적 연구(II) -난류 유동-,이공희;백제현;

대한기계학회논문집B, 2002. vol.26. 6, pp.850-858
3.
수직축을 중심으로 회전하는 직관과 정지한 곡관 내에서의 완전 발달된 난류 유동의 유사성에 관한 수치적 연구,이공희;백제현;

대한기계학회논문집B, 2001. vol.25. 5, pp.731-740
4.
회전하는 정사각 단면 U자형 곡관 내부의 유동 발달에 관한 수치적 연구 (I) - 층류 유동,이공희;백제현;

대한기계학회논문집B, 2002. vol.26. 1, pp.159-169
5.
사각 단면 관 내부의 발달하는 층류 유동 유사성에 종횡비가 미치는 영향,이공희;백제현;

대한기계학회논문집B, 2004. vol.28. 4, pp.441-448
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