Hydraulic Losses of Tubular Pipe Coiled Continuously in an 8-Shape
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概要
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When a fluid flows through a curved pipe, there exists a secondary flow, and the frictional resistance increases considerably compared to that of a straight pipe. Though the friction factor of curved pipes has been studied by many investigators theoretically and experimentally, few studies on three-dimensional coiled pipe flows have been conducted and the flow nature and the friction factors on these flows are yet unexplored. The purpose of this paper is to present the measured results on the hydraulic losses for the flow through tubular pipes coiled continuously in an 8-shape. It is confirmed that the friction factor in coils λ_n decreases with the increase in the number of turns of a coil n, and the flow in pipes reaches a saturated state in the first seven turns of the coils.
- 一般社団法人日本機械学会の論文
- 1995-02-15