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| Content Provider | The American Society of Mechanical Engineers (ASME) Digital Collection |
|---|---|
| Author | Daniel, A. Khalitov Ellen, K. Longmire |
| Copyright Year | 2003 |
| Abstract | The response of glass beads was examined in a fully developed turbulent channel flow of air with Reynolds number Reh = 4500 where h is the channel half width. Five sets of monodisperse particles were tested with integral Stokes numbers in the range 0.2–10 at the channel centerplane. Particle-to-air mass loadings were of order 10%. Laser sheets were aligned in streamwise-spanwise flow planes, and seeded, particle-laden flow was imaged with a dual-frame camera. A separation algorithm was used to obtain simultaneous gas and particle velocity measurements of homogeneous flow planes over a range of wall-normal distances. Profiles of single-point velocity statistics including mean and rms slip velocity, particle drift velocity, and gas-particle correlation were computed. In addition, two-point gas-particle and particle-particle velocity correlations were obtained. Near the wall, the gas-gas correlations yielded long, narrow patterns related to near-wall low-speed streaks. At the centerplane, the correlations were broader in the spanwise direction. Gas-particle and particle-particle correlations resembled the gas correlations in shape and size, but the values were smaller. The gas-particle covariance tended toward zero for St = 10. Particle-particle correlations were still significant for St = 4. |
| Sponsorship | Fluids Engineering Division |
| Starting Page | 445 |
| Ending Page | 453 |
| Page Count | 9 |
| File Format | |
| ISBN | 0791836967 |
| DOI | 10.1115/FEDSM2003-45730 |
| e-ISBN | 0791836738 |
| Volume Number | Volume 1: Fora, Parts A, B, C, and D |
| Conference Proceedings | ASME/JSME 2003 4th Joint Fluids Summer Engineering Conference |
| Language | English |
| Publisher Date | 2003-07-06 |
| Publisher Place | Honolulu, Hawaii, USA |
| Access Restriction | Subscribed |
| Subject Keyword | Particle size Turbulence Reynolds number Statistics as topic Separation (technology) Flow (dynamics) Algorithms Glass beads Lasers Particulate matter Shapes Channel flow Velocity measurement |
| Content Type | Text |
| Resource Type | Article |
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