Figures & data
FIG. 1 Streamlines (a) and particle trajectories (b) for the aspiration into the tube.
FIG. 2 The scheme of calculation domain in plane (X,R): dashed line is the limiting streamline.
FIG. 3 The dependencies of aspiration efficiency on R a for various values of St.
FIG. 4 Streamlines at R a = 0.02 for potential (a) and viscous (b) flow models.
FIG. 5 Limiting particle trajectory at R a = 0.02 and St = 0.1.
FIG. 6 The comparison of the dependencies A i (R a ) and A e (R a ) with experimental data from CitationGibson and Ogden (1977) and CitationDavies and Subari (1982).
TABLE 1
FIG. 7 The comparison of the dependencies A i (R a ) and A e (R a ) with the aspiration efficiencies, obtained by the formulas from , for various values of St.
FIG. 8 The cross-sectional area of the limiting particle trajectory surface far from the sampler at St = 1 and various R a .
FIG. 9 The particle trajectories at St = 1 for R a = 0.1. Dashed lines are the trajectories of particles deposited on the sampler surface.
FIG. 10 The dependencies of the aspiration efficiency on R a with and without gravity influence for various St and fixed Fr (a) and for fixed St and various R c (b).
FIG. 11 The comparison of the numerical and approximate dependencies A(R a ) for calm air sampling.
FIG. 12 The comparison of A(R a ), obtained from numerical model and approximate formula (8) for fixed Fr and various St (a) and for fixed St and various R c (b)
