Black M M, Hose D R, Lawford P V
Department of Medical Physics and Clinical Engineering, University of Sheffield, Royal Hallamshire Hospital, UK.
J Med Eng Technol. 1995 Nov-Dec;19(6):192-7. doi: 10.3109/03091909509030288.
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 magnetic resonance velocity mapping techniques. Some of their results are presented for comparison in this paper. Four difference parametric 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 analyse the effect of different configurations and orientations of artificial aortic valves on the resulting aortic arch flow patterns.
本文包含一项关于可在人体主动脉弓中形成的二次流模式的研究。Kilner等人利用磁共振速度成像技术获得了这些二次流的临床证据。本文展示了他们的部分结果以供比较。已使用计算流体动力学技术分析了四种不同的主动脉弓参数模型。研究考虑了稳定流和瞬态流条件，并使用了两个不同的商用软件包，即FIDAP和FLOTRAN。发现理论分析结果与Kilner等人针对其平面外入口模型在体内和体外所获得的结果进行比较时令人满意。现在可以扩展理论分析，以研究人工主动脉瓣的不同构型和取向对主动脉弓中生成的血流模式的影响。
