Friction during Isothermal Turbulent Flow in Tubes with Twisted Tape.

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作者：
Donevski, Bozin
Kulesza, Jacek
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Zeszyty Naukowe Politechniki Lodzkiej Mechanika | 1980年 / 58期
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摘要：
An analytical study of fully developed turbulent flow through tubes with twisted swirl promoters gives a satisfactory result for the friction coefficient. Data were obtained for pitch-to-diameter ratios from 3. 62 to 50. 0 and for Reynold's numbers from 10,000 up to 200,000 under isothermal conditions. Friction losses may be predicted from the combined effects of the axial and tangential boundary-layer flows coupled with an additional vortex-mixing effect. The swirl intensity is indicated by a parameter.
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页码：5 / 25
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