Journal of Applied Mechanical Engineering

Numerical model of inspiratory flow in an animal lung airway tree

4^th International Conference and Exhibition on Mechanical & Aerospace Engineering

October 03-04, 2016 Orlando, USA

Hansen A Mansy, Peshala P T Gamage, Fardin Khalili and Khurshidul Azad

University of Central Florida, USA

Scientific Tracks Abstracts: J Appl Mech Eng

Abstract:

Numerical modeling of inspiratory flow in a multi generation pig lung airways was performed for a constant flow rate of 19.2 liter/min (Reynolds number=1150 in the trachea). To validate the model, velocity distributions were compared with previous measurements and simulations in simplified airway geometries. Simulation provided the distribution of flow velocities in the axial direction as well as secondary flow patterns. The absolute helicity values were used to visualize vortex core regions in the airways. This analysis suggested the presence of secondary flow vortices in many bifurcations. The observed flow patterns in the pig airways were found to vary from that of simplified bifurcation airway models. Results of the flow simulations showed that secondary and axial flows were comparable in the laminar and turbulent cases. Turbulent kinetic energy in the smaller airways tended to be close to zero suggesting approaching laminar flow conditions.

Biography :

Hansen A Mansy is working as an Associate Professor in the University of Central Florida, USA. His research interest includes: Vibrational and acoustic phenomena in biological systems; Acoustic models of soft tissues; Flow induced vibrations; Vibro-acoustic sensors; Electromechanical systems; Digital signal processing; Biostatistics.

Email: hansen.mansy@ucf.edu