Opening book details…
Can I read The Nature of the Flow Just Above the Perforated Plate Distributor of a Gas-fluidised Bed, as Imaged Using Magnetic Resonance on EtoBox?
The Nature of the Flow Just Above the Perforated Plate Distributor of a Gas-fluidised Bed, as Imaged Using Magnetic Resonance by A.C. Rees; J.F. Davidson; J.S. Dennis; P. S Fennell; L.F. Gladden; A.N. Hayhurst; M.D. Mantle; C.R. Müller; A.J. Sederman is a Engineering article available to read on EtoBox.
What is The Nature of the Flow Just Above the Perforated Plate Distributor of a Gas-fluidised Bed, as Imaged Using Magnetic Resonance about?
Flow patterns within a 3D bed of oil-containing seeds fluidised by nitrogen have been observed for the first time using magnetic resonance imaging (MRI). Attention was focused on the lower region of the bed, just above the multi-orifice distributor: the orifices were 1.0 or 1.5 mm in diameter with square or triangular layouts, of pitch 7-10 mm. Two sizes of seeds were used: 1.2 and 0.50 mm. Each MRI image was a timeaverage over ∼ 5 min and measured the local concentration of seeds. Values of U/U mf were in the range 0.0-3.6, where U is the superficial gas velocity and U = U mf at incipient fluidisation. The images revealed: (1) There was a substantial 'jet' above each orifice in the distributor, remarkably these 'jets' were found even when U U mf . The length of a 'jet' increased with U/U mf . Because of the time-averaged nature of the measurements, a 'jet' could be: (a) a permanent void, (b) a stream of bubbles, or (c) a 'jet' followed by bubbles. (2) When U/U mf 1.0, the upper parts of the 'jets' merged with each other forming a central dilute core. For the first time, a time-averaged velocity map over a horizontal plane was obtained; it demonstrated that the central core was r
Who reads The Nature of the Flow Just Above the Perforated Plate Distributor of a Gas-fluidised Bed, as Imaged Using Magnetic Resonance?
It is typically read by researchers, students, and practitioners in Engineering.
- Author
- A.C. Rees; J.F. Davidson; J.S. Dennis; P. S Fennell; L.F. Gladden; A.N. Hayhurst; M.D. Mantle; C.R. Müller; A.J. Sederman
- Publisher
- Elsevier Science; Elsevier ; Elsevier Ltd.; Elsevier BV (ISSN 0009-2509)
- Published
- 2006
- Language
- EN
- Field
- Engineering (Physical Sciences)