Computational Modelling of Gas-Particle Flows with Different Particle Morphology in the Human Nasal Cavity
نویسندگان
چکیده
منابع مشابه
Unsteady Particle Deposition in a Human Nasal Cavity
The deposition efficiency of unsteady inhalation is investigated in present study by using computational fluid dynamics techniques. Comparison with steady inhalation is also discussed. The inspiratory cycle of a realistic unsteady inhalation profile was applied at the outlet of nasopharynx, which has the maximum flow rate of 40.3L/min. Aerodynamic particle sizes of 5μm and 20μm were studied in ...
متن کاملModelling Submicron and Micron Particle Deposition in a Human Nasal Cavity
The size of a particle determines the deposition efficiency, as well as its deposition site. In this paper, different modelling techniques are presented for submicron and micron particles in a human nasal cavity. In addition this paper highlights some deficiencies in the default models available in a commercially available CFD software.For submicron particles the default Fluent Brownian model a...
متن کاملModelling aerated flows with smoothed particle hydrodynamics
Modelling aerated flows is a complex application of computational fluid dynamics (CFD) since the interfaces between air and water change rapidly. In this work, the simulation of aerated flows with the smoothed particle hydrodynamics (SPH) method is investigated with a focus towards the application in engineering practice. To prove the accuracy of the method, the processes of air entrainment and...
متن کاملCFD Study of the Air Flow Field and Particle Deposition in the Human Nasal Cavity
The nasal cavity is a main part of the human upper airway, and it has the important functions of respiration, heating and humidifying the inhaled air. The properties of the air flow in the nasal cavity may contribute to the occurrence of respiratory disease. In addition, particles are filtered by the nasal cavity. This function prevents toxic particles to enter into the human body, but it also ...
متن کاملModelling free surface flows with smoothed particle hydrodynamics
In this paper the method of Smoothed Particle Hydrodynamics (SPH) is extended to include an adaptive density kernel estimation (ADKE) procedure. It is shown that for a van der Waals (vdW) fluid, this method can be used to deal with free-surface phenomena without difficulties. In particular, arbitrary moving boundaries can be easily handled because surface tension is effectively simulated by the...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Journal of Computational Multiphase Flows
سال: 2009
ISSN: 1757-482X,1757-4838
DOI: 10.1260/175748209787387061