12500

Source: D. Leith, 1984, Cyclones, in Handbook of powder science and technology, edited by M.A. Fayed and L. Otten (Van Nostrand Reinhold Co.). Notes: aStairmand, C.J. 1951. The design and performance of cyclone separators. Trans. Instn. Chem. Engrs. 29:356. bSwift, P. 1969. Dust controls in industry. Steam and Heating Engineer 38:453. cLapple, C. 1951. Processes use many collector types. Chemical Engineering 58:144.

dStern, A.C., K.J. Kaplan, and P.D. Bush. 1956. Cyclone dust collectors. New York: American Petroleum Institute.

Source: D. Leith, 1984, Cyclones, in Handbook of powder science and technology, edited by M.A. Fayed and L. Otten (Van Nostrand Reinhold Co.). Notes: aStairmand, C.J. 1951. The design and performance of cyclone separators. Trans. Instn. Chem. Engrs. 29:356. bSwift, P. 1969. Dust controls in industry. Steam and Heating Engineer 38:453. cLapple, C. 1951. Processes use many collector types. Chemical Engineering 58:144.

dStern, A.C., K.J. Kaplan, and P.D. Bush. 1956. Cyclone dust collectors. New York: American Petroleum Institute.

coupled, nonlinear, partial differential equations of the conservation of mass and momentum. Boysan, Ayers, and Swithenbank (1982) have developed a mathematical model of gas flow based on the continuity and momentum conservation principles, accounting for the anisotropic nature of turbulence and its dissipation rate. The velocity and pressure profiles of their model agree remarkably with the experimental measurements of Ter Linden (1949). However, as they suggest, the information obtained from such modeling is more detailed than that required by a process design engineer.

FIG. 5.16.3 Tangential gas velocity in a reverse-flow cyclone. The figure is a vertical cross section of half the cyclone. Each of the nodes represents tangential gas velocity. (Reprinted, with permission, from D.L. Iozia and D. Leith, 1989, Effect of cyclone dimensions on gas flow pattern and collection efficiency, Aerosol Sci. and Technol. 10:491.)

FIG. 5.16.3 Tangential gas velocity in a reverse-flow cyclone. The figure is a vertical cross section of half the cyclone. Each of the nodes represents tangential gas velocity. (Reprinted, with permission, from D.L. Iozia and D. Leith, 1989, Effect of cyclone dimensions on gas flow pattern and collection efficiency, Aerosol Sci. and Technol. 10:491.)

FIG. 5.16.4 Radial gas velocity in a reverse-flow cyclone. (Reprinted, with permission, from M. Kessler and D. Leith, 1991, Flow measurement and efficiency modeling of cyclones for particle collection, Aerosol Sci. and Technol. 15.)
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