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http://dx.doi.org/10.3795/KSME-B.2011.35.3.245

Numerical Study of Flow Characteristics in Elementary Paths of Velocity-Control Trim  

Kim, Dae-Kwon (Dept. of Mechanical Engineering, Sejong Univ.)
Sohn, Chae-Hoon (Dept. of Mechanical Engineering, Sejong Univ.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.35, no.3, 2011 , pp. 245-253 More about this Journal
Abstract
We investigate the flow characteristics of elementary-flow paths with $90^{\circ}$ bends; a velocity-control trim consists of such paths. For geometric similarity, the width and length of each path are selected, and the number of bends is 0, 4, or 8. The flow tests are conducted with the same flow-path elements. The numerical results are in good agreement with the experimental data. In elements without bends, the volume flow rate decreases with the length of the flow path, with a constant pressure drop between the inlet and the outlet. However, in flow paths with $90^{\circ}$ bends, it increases and then decreases with the length of the flow path. For a fixed number of $90^{\circ}$ bends, better pressure-drop characteristics are observed as the length of the flow path increases. For a fixed flow-path length, a flow-path element with more bends has a smoother pressure drop along the path.
Keywords
Velocity-Control Trim; Similarity; Pressure Drop; Cavitation;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
Times Cited By SCOPUS : 0
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