Effects of spray angle on three-dimensional isothermal solid–gas flow in a confined deposition chamber |
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| Affiliation: | 1. Technical Physics Division, Bhabha Atomic Research Center, Mumbai 400 085, India;2. National Physical Laboratory, Dr. K.S. Krishnan Road, New Delhi 110012, India;1. School of Mechanical and Manufacturing Engineering, The University of New South Wales (UNSW), Kensington, New South Wales 2052, Australia;2. Commonwealth Scientific and Industrial Research Organization (CSIRO) Energy Centre, Newcastle, New South Wales 2304, Australia;1. Fraunhofer Chile Research, Av. Vicuña Mackenna 4860, Santiago, Chile;2. Escuela de Ingeniería, Pontificia Universidad Católica de Chile, Av. Vicuña Mackenna 4860, Santiago, Chile;3. EDMANS Group, Department of Mechanical Engineering, University of La Rioja, San José de Calasanz 31, Logroño, Spain |
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| Abstract: | The effects of spray angle (β) on the three-dimensional isothermal solid–gas flow and deposition process in a confined deposition chamber are numerically investigated in the present study. The investigated cases include substrate spray angles equal to 90-, 75-and 45-deg. In the three spray-angle cases, β = 75-deg case has the highest deposition efficiency, lowest distribution non-uniformity and comparative average impact velocity. Accordingly, β = 75-deg is concluded as the optimal spray angle for the deposition chamber under the isothermal flow conditions. However, the relatively large amount of particles impact on the chamber wall, which is possible to block up the flow pass of the chamber, requires special cautions in practical applications. |
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