Evaluation of Several Turbulence Models to Predict Flow in an Idealised Human Extra-thoracic Airway

摘要

The performance of several turbulence models(Stan- dard and RNG k -ε,Standard and SST k- ω,and the Reynolds’Stress Model)in predicting the flow in an idealised extra-thoracic airway(ETA)is eval- uated using multi-processor implementation of FLU- ENT.Veracity of the computational models is ascer- tained at physiologically accurate flow rates of 10,15, and 30 l/min by comparison of numerical results with hot-wire[6]and Particle Image Velocimetry(PIV)[4] mean velocity data for the central sagittal plane of the ETA.Furthermore,flow features generated by numer- ical models are compared to those from experimental flow-visualisation studies[6].