Application of V Shape Riblets to Pipe FlowsSource: Journal of Fluids Engineering:;1991:;volume( 113 ):;issue: 004::page 587Author:Shin-ichi Nakao
DOI: 10.1115/1.2926519Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Pipes with V shape riblets were tested at Reynolds numbers between 5×103 and 4×104 . All riblet pipes indicated some drag reduction. The model with h = 0.55 mm and h/S = 0.483 showed the maximum drag reduction of 8 percent and the widest range of Reynolds number over which the riblet reduces drag. The riblet shape desirable for drag reduction in pipe flows was almost the same as that in flat plate boundary layers, but the value of S+ which provided the maximum drag reduction was quite different; S+ = 23 for pipe flows and S+ = 12 for flat plate boundary layers.
keyword(s): Pipe flow , Shapes , Drag reduction , Flat plates , Pipes , Reynolds number , Boundary layers AND Drag (Fluid dynamics) ,
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| contributor author | Shin-ichi Nakao | |
| date accessioned | 2017-05-08T23:35:45Z | |
| date available | 2017-05-08T23:35:45Z | |
| date copyright | December, 1991 | |
| date issued | 1991 | |
| identifier issn | 0098-2202 | |
| identifier other | JFEGA4-27062#587_1.pdf | |
| identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/108673 | |
| description abstract | Pipes with V shape riblets were tested at Reynolds numbers between 5×103 and 4×104 . All riblet pipes indicated some drag reduction. The model with h = 0.55 mm and h/S = 0.483 showed the maximum drag reduction of 8 percent and the widest range of Reynolds number over which the riblet reduces drag. The riblet shape desirable for drag reduction in pipe flows was almost the same as that in flat plate boundary layers, but the value of S+ which provided the maximum drag reduction was quite different; S+ = 23 for pipe flows and S+ = 12 for flat plate boundary layers. | |
| publisher | The American Society of Mechanical Engineers (ASME) | |
| title | Application of V Shape Riblets to Pipe Flows | |
| type | Journal Paper | |
| journal volume | 113 | |
| journal issue | 4 | |
| journal title | Journal of Fluids Engineering | |
| identifier doi | 10.1115/1.2926519 | |
| journal fristpage | 587 | |
| journal lastpage | 590 | |
| identifier eissn | 1528-901X | |
| keywords | Pipe flow | |
| keywords | Shapes | |
| keywords | Drag reduction | |
| keywords | Flat plates | |
| keywords | Pipes | |
| keywords | Reynolds number | |
| keywords | Boundary layers AND Drag (Fluid dynamics) | |
| tree | Journal of Fluids Engineering:;1991:;volume( 113 ):;issue: 004 | |
| contenttype | Fulltext |