The origin and significance of secondary flows in the aortic arch
| Autor: | M. M. Black, Patricia V. Lawford, D. R. Hose |
|---|---|
| Rok vydání: | 1995 |
| Předmět: |
Aortic arch
Blood Volume Models Cardiovascular Biomedical Engineering Aorta Thoracic General Medicine Anatomy Mechanics Flow pattern Blood Viscosity Secondary flow Magnetic Resonance Imaging Transient flow Regional Blood Flow Velocity mapping Clinical evidence Pulsatile Flow medicine.artery Hemorheology medicine Humans Blood Flow Velocity Geology |
| Zdroj: | Journal of Medical Engineering & Technology. 19:192-197 |
| ISSN: | 1464-522X 0309-1902 |
| DOI: | 10.3109/03091909509030288 |
| Popis: | This paper comprises a study of the secondary flow patterns that can develop in the human aortic arch. Clinical evidence of these secondary flows has been obtained by Kilner et al. using magnatic resonance velocity mapping techniques. Some of their results are presented for comparison in this present paper. Four different Parametrk models of the aortic arch have been analysed using computational fluid dynamic techniques. Both steady and transient flow conditions have been considered and two different commercially available software packages were used, namely FIDAP and FLOTRAN. A satisfactory comparison of the theoretical analysis with the results, both in vivo and in vitro, obtained by Kilner et al. for their out-of-plane inlet model was found. The theoretical analysis can now be extended to anulyse the effect of different configurations and orientations of artificial aortic valves on the resulting aortic arch flow patterns. |
| Databáze: | OpenAIRE |
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