Article citationsMore>>
Poland, C.A., Duffin, R., Kinloch, I. Maynard, A., Wallace, W.A.H., Seaton, A., Stone, V., Brown, S., Macnee, W. and Donaldson, K. (2008) Carbon nanotubes introduced into the abdominal cavity of mice show asbestos-like pathogenicity in a pilot study. Nature nanotechnology, 3, 423-428. doi:10.1038/nnano.2008.111
has been cited by the following article:
-
TITLE:
Deposition of charged nano-particles in the human airways including effects from cartilaginous rings
AUTHORS:
Hans O. Akerstedt
KEYWORDS:
Charged Particles; Nanoparticles; Convection; Brownian motion; Deposition; Respiratory Airways; Cartilaginous Rings
JOURNAL NAME:
Natural Science,
Vol.3 No.10,
October
21,
2011
ABSTRACT: This paper presents a numerical study of the deposition of spherical charged nano-particles caused by convection, Brownian diffusion and electrostatics in a pipe with a cartilaginous ring structure. The model describes the deposition of charged particles in the different generations of the tracheobronchial tree of the human lung. The upper airways are characterized by a certain wall structure called cartilaginous rings which modify the particle deposition when compared to an airway with a smooth wall. The problem is defined by solving Naver-Stokes equations in combination with a convective-diffusion equation and Gauss law for electrostatics. Three non- dimensional parameters describe the problem, the Peclet number Pe = 2ūa/D , the Reynolds number Re = ūa/v and an electrostatic parameter α=α2c0q2/(4ε0κT) . Here U is the mean velocity, a the pipe radius and D the diffusion coefficient due to Brownian motion given by D=κTCu/3πμd , where Cu is the Cunningham-factor Cu=1+λ/d(2.34+1.05exp(-0.39d/λ)) Here d is the particle diameter and λ the mean free path of the air molecules. Results are provided for generations G4-G16 of the human airways. The electrostatic parameter is varied to model different concentrations and charge numbers.
Related Articles:
-
José Moral-De La Rubia
-
Igor Bychko, Yevhen Kalishyn, Peter Strizhak
-
Sevda H. Abdullayeva, Asger B. Huseynov, Nahida N. Musayeva, Rasim B. Jabbarov, Chingiz A. Sultanov, Rovshan F. Hasanov
-
Md. Sahab Uddin, Abdullah Al Mamun, Mohammed Ashraful Iqbal, Md. Nasrullah, Md. Asaduzzaman, Md. Shahid Sarwar, Md. Shah Amran
-
Adriana Medina Ramírez, Prócoro Gamero Melo, José Manuel Almanza Robles, María Esther Sánchez Castro, Sasirot Khamkure, Roberto García de León