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971.
Andrzej Nowak 《Journal of Electrostatics》2012,70(3):327-332
The paper presents a numerical model for simulating the vibration of collecting electrodes in an electrostatic precipitator. The method of finite elements (FEM) was used to describe the shell elements of the collecting electrodes. The remaining elements of the system were modelled with the application of the rigid finite elements method (RFEM). The results of measuring validation and testing calculations are discussed. 相似文献
972.
Pseudo-BL-algebras are a noncommutative extention of BL-algebras. In this paper we consider polars in pseudo-BL-algebras and the class of complete pseudo-BL-algebras. In the final section, a version of the Cantor-Bernstein theorem will be proved. 相似文献
973.
974.
975.
976.
977.
The contour of a family of filters along a filter is a set-theoretic lower limit. Topologicity and regularity of convergences can be characterized with the aid of the contour operation. Contour inversion is studied, in particular, for iterated contours of sequential cascades. A related problem of continuous extension of maps between maximal elements of sequential cascades to full subcascades is solved in full generality. 相似文献
978.
A model assuming that the formation of dimers determines the acoustic properties of liquid mixtures, in the inert solvent cyclohexane, was applied to describe the observed dependences of sound speed on composition. The dimerization constants were estimated. The results allow one to propose that the solutes tend to form associates larger than dimers in concentrated solutions, while in dilute systems solute–solvent interactions play an important role. 相似文献
979.
Andrzej Walendziak 《Mathematica Slovaca》2014,64(5):1075-1082
Some connections between BM-algebras and its related topics are studied. It is proved that the class of medial BH-algebras coincides with the class of BM-algebras. Moreover, the congruence lattice of a BM-algebra is investigated. 相似文献
980.
The results of experimental investigations of bed flow hydrodynamics in spouted beds are compared with CFD simulations (Eulerian–Eulerian
approach) for two different column geometries. The experimental results of bed porosity and fluctuation frequency of mass
flow rate of grain in the fountain region are compared with the corresponding results of simulations. The simulation results
confirmed the observations of Muir et al. (1990, Chem. Eng. Comm. 88: 153–171) and Yang and Keairns (1978, AlchE Symp. Ser. No. 176 74: 218) that fluctuations of bed flow in DTSB are caused by particle cluster formation in the loading region at the bottom
of column. The solids cross into the jet and cover the column inlet and are carried upward periodically through a draft tube.
Subsequent figures obtained from simulations, which show stages of particle cluster formation at the entrance of column, exactly
match visual observations. The frequency of fluctuations of grain mass flow rate predicted in simulations (~5–6 Hz) is in
the range of that experimentally determined. The fluctuating inflow of solids results in slug formation and explains the vertical
variations of height and porosity of the fountain. 相似文献