Relaxation auto-oscillations in a fluidized bed / Tuponogov V.G., Ryzhkov A.F., Baskakov A.P., Obozhin O.A. // Thermophysics and Aeromechanics. - 2008. - V. 15, l. 4. - P. 603-616.

ISSN:
08698643
Type:
Article
Abstract:
Oscillations of nonuniform fluidized bed in the slugging regime are considered. A nonlinear one-dimensional model of bed oscillations is developed and investigated, including the equations of the bed surface motion and the oscillations of the pressure drop in the bed for the phase of the surface ascent and for the phase of its fall. A quasi-discrete process of the gas escape from the layer with large bubble and the relaxation (discontinuous) type of oscillations of the bed surface and of the pressure, which are related to the above process, are shown based on the model analysis, the obtained numerical solutions, and the comparison with experiment. © 2008 Pleiades Publishing, Ltd.
Author keywords:
Annular particle streak; Cavity on the surface; Cycle of oscillations; Ergun equation; Gas slugs; Surface velocity; Voidage variation
Index keywords:
нет данных
DOI:
10.1007/s11510-008-0009-z
Смотреть в Scopus:
https://www.scopus.com/inward/record.uri?eid=2-s2.0-65349159176&doi=10.1007%2fs11510-008-0009-z&partnerID=40&md5=7c26af27027b87fc03db6110c644424f
Соавторы в МНС:
Другие поля
Поле Значение
Link https://www.scopus.com/inward/record.uri?eid=2-s2.0-65349159176&doi=10.1007%2fs11510-008-0009-z&partnerID=40&md5=7c26af27027b87fc03db6110c644424f
Affiliations Ural State Technical University, Ekaterinburg, Russian Federation
Author Keywords Annular particle streak; Cavity on the surface; Cycle of oscillations; Ergun equation; Gas slugs; Surface velocity; Voidage variation
References Roy, R., Davidson, J.F., Tuponogov, V.G., The velocity of sound in fluidized beds (1990) Chem. Engng. Sci., 45 (1), pp. 323-324; Van Der Schaaf, J., Schouten, J.C., Van Den Bleek, C.M., Origin, propagation and attenuation of pressure waves in gas-solid fluidized beds (1998) Powder Technology, 95 (3), pp. 220-233. , DOI 10.1016/S0032-5910(97)03341-X, PII S003259109703341X; Ryzkov, A.F., Tuponogov, V.G., Putrik, B.A., Fluctuations and waves in powder and granular fluidized beds (2000) Proc. III Europ. Conf. on Fluidization, pp. 153-163. , Toulouse, France, May; Baskakov, A.P., Tuponogov, V.G., Filippovsky, N.F., STUDY of PRESSURE FLUCTUATIONS in A BUBBLING FLUIDIZED BED. (1986) Powder Technology, 45 (2), pp. 113-117. , DOI 10.1016/0032-5910(66)80003-7; Zhang, W., Johnsson, F., Lecner, B., Time-dependent behavior of particle flow in CFD boilers (2001) Proc. Tenth Engng. Found. Conf. on Fluidization, pp. 253-260. , Beijing, China, May 20-25; Borodulya, V.A., Buyevich, Yu.A., Zavyalov, V.V., The theory of relaxation autooscillations of a granular fluidized bed with gas (1976) J. Engng. Phys., 30 (3), pp. 424-433; Todes, O.M., Tsitovich, O.B., (1981) Apparatuses with Boiling Granular Bed, , Khimiya Leningrad; Kutateladze, S.S., (1979) Foundations of the Theory of Heat Exchange, , Atomizdat Moscow; Fan, L.T., Hiraoka, S., Shin, S.H., Analysis of pressure fluctuations in gas-solid fluidized bed (1984) AIChE J., 30 (2), pp. 346-349; Sasic, S., Leckner, B., Johnsson, F., Fluctuations and waves in fluidized bed systems: The influence of the air-supply system (2005) Powder Technology, 153 (3), pp. 176-195. , DOI 10.1016/j.powtec.2005.03.012, PII S0032591005001002; Matsen, J.M., Hovmand, S., Davidson, J.F., Expansion of fluidized beds in slug flow (1969) Chem. Engng. Sci., 24, pp. 1743-1754; Kehoe, P.W.K., Davidson, J.F., Pressure fluctuations in fluidized beds (1973) AIChE. Symp. Ser., 69 (128), pp. 34-40; Geldart, D., (1986) Gas Fluidization Technology, , J. Wiley & Sons New York; Fluidization, J.F. Davidson and D. Harrison (Eds.), Acad. Press, London, New York, 1971; Schaaf Der J.Van, Schouten, J.C., Johnsson, F., Bleek Den Van, C.M., Multiple modes of bed mass oscillation in gas-solids fluidized beds Proc. 15th Int. Conf. on Fluidized Bed Combustion, , R.B. Reuther (Ed.), May 16-19, Savannah (GA), USA, 1999. CD-Rom No. FBC99-0201; Tuponogov, V.G., Ryzhkov, A.F., Baskakov, A.P., Obozhin, O.A., Dubinin, A.M., Modelling of the fluidized bed oscillations (2006) Dispersed Flows and Porous Media. Heat Exchange Intensification, Proc. IV Russ. Nat. Conf. on Heat Exchange, Vol. 6, pp. 133-136. , Moscow Power Engng. Inst. Moscow
Correspondence Address Tuponogov, V. G.; Ural State Technical University, Ekaterinburg, Russian Federation; email: tuponogov@mail.ustu.ru
Language of Original Document English
Abbreviated Source Title Thermophys. Aeromech.
Source Scopus