Greenfield H, Au A
Scand J Thorac Cardiovasc Surg. 1976;10(3):197-204. doi: 10.3109/14017437609167793.
Flow patterns for commonly used aortic valve prostheses were formed with the aid of fluid dynamics equations, numerical analysis techniques and computer graphics. Simulations of velocities, vorticity, pressure and certain stress values were developed by a computer and displayed for man-machine interaction. The ball, disc and tilting-disc occluders were of interest. The displays comprised both contour and perspective patterns; the latter permitting semi-quantitative evaluation of particular parameters. Comparisons between the computer simulations and those flow visualizations formed by Björk and co-workers were assessed. Although the methodology was of prime concern for presentation, the capability of the tilting-disc prosthesis for presenting a more natural flow regime was shown. Thoughts of future studies were entertained.
借助流体动力学方程、数值分析技术和计算机图形学，形成了常用主动脉瓣假体的流动模式。计算机对速度、涡度、压力和某些应力值进行了模拟，并显示出来用于人机交互。研究对象包括球瓣、盘瓣和倾斜盘瓣封堵器。显示内容包括等高线图和透视图；后者允许对特定参数进行半定量评估。对计算机模拟结果与比约克及其同事所做的流动可视化结果进行了比较评估。尽管方法是报告的主要关注点，但结果表明倾斜盘瓣假体能够呈现更自然的流动状态。文中还探讨了未来研究的思路。
