1 copyright © 2011, elsevier inc. all rights reserved. computational fluid dynamics of particle...
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Copyright © 2011, Elsevier Inc. All rights Reserved. 1
Computational Fluid Dynamicsof Particle Transport and
Deposition
Chapter 2
Goodarz Ahmadi
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FIGURE 2.1 Comparison of computer simulations of He and Ahmadi [19] for deposition of spherical particles in duct flows with experimental data collected by Papavergos and Hedley [49] and earlier simulation as well as model predictions of Fan and Ahmadi [10,11] and Wood [47,48].
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FIGURE 2.2 Comparison of computer simulations of He and Ahmadi [19] and Soltani and Ahmadi [50] for deposition of charged particles in duct flows with the empirical model predictions of Fan and Ahmadi [10,11] and Wood [47,48].
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FIGURE 2.3 A sample mesh that was used in the computation and a sample velocity vector field near carina.
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FIGURE 2.4 Mean velocity contours across the upper airways.
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FIGURE 2.5 Deposition pattern for different size particles.
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FIGURE 2.6 Comparison of the capture efficiencies versus Stokes numbers.
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FIGURE 2.7 Cross-sections of the nose of a human male obtained from MRI and used in developing the computational model. The contours are velocity magnitudes.
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FIGURE 2.8 The computational model of the nasal airway with various nose regions.
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FIGURE 2.9 Sample surface mesh used in the simulations [93].
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FIGURE 2.10 Sample velocity vector field in different section of the nasal airways.
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FIGURE 2.11 Comparison of the simulation results for the nose capture efficiency with the experimental data for particles of different sizes.
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FIGURE 2.12 Variations of nose capture efficiency with inverse Peclet number for particles smaller than 100 nm.
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FIGURE 2.13 Simulation results for the nose capture efficiency for particle of different sizes at different breathing rate.