Strain Measurement of Pure Titanium Covered With Soft Tissue Using X-Ray Diffraction
Measurement of the stress and strain applied to implants and bone tissue in the human body are important for fracture prediction and evaluations of implant adaptation. The strain of titanium (Ti) mate...
Measurement of the stress and strain applied to implants and bone tissue in the human body are important for fracture prediction and evaluations of implant adaptation. The strain of titanium (Ti) mate...
Mixed Experimental and Numerical Approach for Characterizing the Biomechanical Response of the Human Leg Under Elastic Compression
Elastic compression is the process of applying an elastic garment around the leg, supposedly for enhancing the venous flow. However, the response of internal tissues to the external pressure is still ...
Elastic compression is the process of applying an elastic garment around the leg, supposedly for enhancing the venous flow. However, the response of internal tissues to the external pressure is still ...
Visualizing Flow Partitioning in a Model of the Upper Human Lung Airways
J. Biomech. Eng. -- March 2010 -- Volume 132, Issue 3, 031005 (9 pages)
doi:10.1115/1.4000871
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The convective transport of fluid within the human upper airways is investigated in a transparent model of the tracheobronchial tree. Oscillatory flow through the branching network with six generations was studied at varying Reynolds numbers between 400 and 2600 and Womersley numbers from 5.5 to 12.3 in the trachea representing clinical conditions during high frequency oscillatory ventilation. The flow partitioning within the model was visualized using advection of neutrally buoyant tracer particles, which were illuminated by short light pulses and recorded by a high speed camera. Integration of the particle locations for a large number of cycles provides the probability distribution of particles passing certain branches within the bifurcating network, and thus, the dispersion of particles in the airways. The results show the different characteristics of flow partitioning at varying Womersley and Reynolds numbers.
©2010 American Society of Mechanical Engineers
| History: | Received 5 February 2009; revised 28 September 2009; accepted manuscript posted 22 December 2009; published 8 February 2010 | |
| doi: | http://dx.doi.org/10.1115/1.4000871 | |
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