Název: Numerické simulace transportu a depozice vláken v zjednodušeném modelu dýchacích cest
Překlad názvu: Numerical investigation of transport and deposition of fibrous aerosol in simplified model of respiratory system
Autoři: Masood, Usman ; Bělka, Miloslav (oponent) ; Elcner, Jakub (vedoucí práce)
Typ dokumentu: Diplomové práce
Rok: 2023
Jazyk: eng
Nakladatel: Vysoké učení technické v Brně. Fakulta strojního inženýrství
Abstrakt: Rigid particles such as fiber particles, asbestos or MMMFs (man-made mineral fibers) are harmful to human health when inhaled because of their abundance in the atmosphere, composition, and ability to penetrate deep into human lungs. It can cause lung cancer and numerous other diseases according to the severity of the exposure. To address this inhalation phenomenon and complex maneuvers of these hazardous particles, it is vital to monitor their behaviour such as the nature of their transport, deposition, and trajectory which they attain during the inhalation conditions. Many previous studies regarding particle transport and deposition in human respiratory airways involved spherical particles, however, this research includes non-spherical thin and elongated particles in computational domain. Therefore, STAR CCM+ software is used to conduct this research and initial boundary conditions are taken from the preliminary experiments done by Lizal Frantisek and other researchers at Brno University of Technology, they assembled a test rig to visualize the motion of glass fibers through a replica of human airways. Fibers exhibit different aerodynamic behavior than spherical particles, causing different deposition patterns. To investigate this phenomenon, a computational fluid dynamics simulation setup is constructed in Simcenter STAR CCM+ using a model of the human airway. The discrete element method (DEM) is used because this is an extension of lagrangian approach (LA), which deals with discrete particle parcels and solves the equation of motion to determine the trajectory as they move through time and space as well as it deals with particle shape and collision behaviour. Based on the simulations, particle deposition in the respiratory tract model is studied and its results are analyzed.
Klíčová slova: Asbestos and MMMFs; Computational Fluid Dynamics (CFD); Discrete Element Method (DEM); Fibers; Non-Spherical Particles; Particle Transport and Deposition.; Asbestos and MMMFs; Computational Fluid Dynamics (CFD); Discrete Element Method (DEM); Fibers; Non-Spherical Particles; Particle Transport and Deposition.

Instituce: Vysoké učení technické v Brně (web)
Informace o dostupnosti dokumentu: Plný text je dostupný v Digitální knihovně VUT.
Původní záznam: http://hdl.handle.net/11012/212356

Trvalý odkaz NUŠL: http://www.nusl.cz/ntk/nusl-530605


Záznam je zařazen do těchto sbírek:
Školství > Veřejné vysoké školy > Vysoké učení technické v Brně
Vysokoškolské kvalifikační práce > Diplomové práce