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http://dx.doi.org/10.3795/KSME-B.2002.26.6.842

A Numerical Study on the Similarity of Laminar Flows in Orthogonally Rotating Rectangular Ducts and Stationary Curved Rectangular Ducts of Arbitrary Aspect Ratio  

Lee, Gong-Hee (포항공과대학교 대학원 기계공학과)
Baek, Je-Hyun (포항공과대학교 기계공학과)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.26, no.6, 2002 , pp. 842-849 More about this Journal
Abstract
The present study showed that a quantitative analogy of the fully developed laminar flows inorthogonally rotating rectangular ducts and stationary curved rectangular ducts of arbitrary aspect ratio could be established. In order to clarify the similarity of the two flows, the dimensionless parameters $K_{LR}$ =Re/√Ro and Rossby number Ro= $w_{m}$/$\Omega$d in a rotating strait duct were used as a set corresponding to Dean number $K_{LC}$ =Re/√λand curvature ratio λ=R/d in a stationary curved duct. Under the condition that the value of Rossby number and curvature ratio was large enough, the flow field satisfied the ‘asymptotic invariance property’: there were strong quantitative similarities between the two flows such as friction factors, flow patterns, and maximum axial velocity magnitudes for the same values of $K_{LR}$ and $K_{LC}$ .
Keywords
Secondary Flow; Coriolis Force; Centrifugal Force; Duct Flow; Fully-Developed Laminar Flow; Aspect Ratio;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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