Geodesic
Study of singular points of motion equations of aerosol particles for problem of aspiration into cylindrical sampler
Učënye zapiski Kazanskogo universiteta. Seriâ Fiziko-matematičeskie nauki, Kazanskii Gosudarstvennyi Universitet. Uchenye Zapiski. Seriya Fiziko-Matematichaskie Nauki, Tome 148 (2006) no. 2, pp. 23-30
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The results of the study of singular points of motion equation of aerosol particles in the vicinity of cylindrical sampler at the aspiration from calm and moving air are presented. The coordinates of singular points as a function of settling velocity, relative size of input orifice and angle of sampler orientation relatively to wind and gravity force directions are investigated analytically and numerically. The criterions of existence of one or two singular points in the solution region are obtained. It is shown that the number of singular points doesn't depend on the wind flow. 
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M. V. Vanyunina; Sh. Kh. Zaripov; È. V. Skvortsov. Study of singular points of motion equations of aerosol particles for problem of aspiration into cylindrical sampler. Učënye zapiski Kazanskogo universiteta. Seriâ Fiziko-matematičeskie nauki, Kazanskii Gosudarstvennyi Universitet. Uchenye Zapiski. Seriya Fiziko-Matematichaskie Nauki, Tome 148 (2006) no. 2, pp. 23-30. http://geodesic.mathdoc.fr/item/UZKU_2006_148_2_a2/

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