Flow Resistance of Curved Pipes with Rough Surfaces
Friction coefficients have been measured for turbulent flows through curved circular pipes with rough surfaces. An experiment has been carried out under the conditions of equivalent relative roughness ke/d=3.59×10-3∼3.25×10-2, Reynolds number Re < 7×104 and curvature radius ratios Rc=15, 30 and 4...
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| Veröffentlicht in: | Nihon Kikai Gakkai rombunshuu. B hen 1990/01/25, Vol.56(521), pp.29-34 |
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| container_issue | 521 |
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| container_title | Nihon Kikai Gakkai rombunshuu. B hen |
| container_volume | 56 |
| creator | SUDOU, Kouzou TAKAMI, Toshihiro |
| description | Friction coefficients have been measured for turbulent flows through curved circular pipes with rough surfaces. An experiment has been carried out under the conditions of equivalent relative roughness ke/d=3.59×10-3∼3.25×10-2, Reynolds number Re < 7×104 and curvature radius ratios Rc=15, 30 and 45. An approximate expression, which expresses the experimental results well, has been derived using the boundary layer approximation. |
| doi_str_mv | 10.1299/kikaib.56.29 |
| format | Article |
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An experiment has been carried out under the conditions of equivalent relative roughness ke/d=3.59×10-3∼3.25×10-2, Reynolds number Re < 7×104 and curvature radius ratios Rc=15, 30 and 45. 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| identifier | ISSN: 0387-5016 |
| ispartof | Transactions of the Japan Society of Mechanical Engineers Series B, 1990/01/25, Vol.56(521), pp.29-34 |
| issn | 0387-5016 1884-8346 |
| language | jpn |
| recordid | cdi_proquest_miscellaneous_744565447 |
| source | J-STAGE Free; EZB-FREE-00999 freely available EZB journals |
| subjects | boundary layers Friction Coefficient pipes surface roughness turbulent flow |
| title | Flow Resistance of Curved Pipes with Rough Surfaces |
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