Numerical analysis of micro-particle deposition in turbulent flows in a realistic model of human upper airway
سال انتشار: 1392
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 102
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شناسه ملی سند علمی:
ISME21_607
تاریخ نمایه سازی: 17 آبان 1401
چکیده مقاله:
Turbulent flow field and particle deposition in a realistic model of human upper airway system including: nasal cavity, nasopharynx, oropharynx, larynx and trachea were analyzed numerically. The Lagrangian approach was used to find the trajectories of micron-size particles for the breathing rates between ۱۵-۶۰ lit/min. The continuous phase flow was solved using a RANS (Reynolds Average Navier-Stokes) turbulence model and the effect of turbulent fluctuations on particle trajectories was modeled using a continuous random walk (CRW) stochastic model, which is based on the normalized Langevin equation. The total and regional deposition fractions of micro particles were evaluated and the effect of turbulence fluctuations on the particle deposition rate was investigated.
کلیدواژه ها:
نویسندگان
Ebrahim Ghahramani
School of Mechanical Engineering, Shiraz University, Shiraz, Iran
Omid Abouali
School of Mechanical Engineering, Shiraz University, Shiraz, Iran
Homayoun Emdad
School of Mechanical Engineering, Shiraz University, Shiraz, Iran
Goodarz Ahmadi
Department of Aeronautical and Mechanical Engineering, Clarkson University, NY, USA