| contributor author | C. C. Gutiérrez-Torres | |
| contributor author | Y. A. Hassan | |
| contributor author | J. A. Jimenez-Bernal | |
| date accessioned | 2017-05-09T00:28:17Z | |
| date available | 2017-05-09T00:28:17Z | |
| date copyright | November, 2008 | |
| date issued | 2008 | |
| identifier issn | 0098-2202 | |
| identifier other | JFEGA4-27345#111304_1.pdf | |
| identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/138142 | |
| description abstract | Turbulent boundary layer modification in a channel flow using injection of microbubbles as a means to achieve drag reduction was studied. The physical mechanism of this phenomenon is not yet fully understood. To obtain some information related to this phenomenon, single-phase (pure water) flow and two-phase (water and microbubbles) channel flow measurements are taken. The void fraction conditions were varied while maintaining a Reynolds number of 5128 based on the half channel height. The study indicates that the presence of microbubbles within the boundary layer modifies the turbulence structure such that variations in time and space turbulent scales are observed, as well as ejection and sweep phenomena. | |
| publisher | The American Society of Mechanical Engineers (ASME) | |
| title | Turbulence Structure Modification and Drag Reduction by Microbubble Injections in a Boundary Layer Channel Flow | |
| type | Journal Paper | |
| journal volume | 130 | |
| journal issue | 11 | |
| journal title | Journal of Fluids Engineering | |
| identifier doi | 10.1115/1.2969444 | |
| journal fristpage | 111304 | |
| identifier eissn | 1528-901X | |
| keywords | Microbubbles | |
| keywords | Boundary layers | |
| keywords | Channel flow | |
| keywords | Two-phase flow | |
| keywords | Vortices | |
| keywords | Drag reduction | |
| keywords | Flow (Dynamics) | |
| keywords | Turbulence | |
| keywords | Channels (Hydraulic engineering) | |
| keywords | Measurement | |
| keywords | Porosity | |
| keywords | Stress AND Water | |
| tree | Journal of Fluids Engineering:;2008:;volume( 130 ):;issue: 011 | |
| contenttype | Fulltext | |