CEFIT - A NUMERICAL MODELING TOOL FOR AXISYMMETRIC WAVE PROPAGATION IN CYLINDRICAL MEDIA

机译：CEFIT-圆柱介质中轴对称波传播的数值建模工具

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The spatial and temporal staggered grid formulation of CEFIT produces a very stable and efficient numerical code. The implementation of boundary conditions at inner and outer boundaries of the model is much easier than in standard FD schemes using non-staggered grids. With CEFIT, axisymmetric three-dimensional problems can be treated in a two-dimensional rectangular grid in the (r,z)-halfplane. The good agreement between theory and numerical calculations demonstrates the accuracy of the numerical code. Further fields of application not presented here are waves in acoustic microscopes, simulation of impact-echo measurements in multi-layer systems and axisymmetric wave propagation in arbitrary bodies of revolution.

机译：CEFIT的时空交错网格公式产生了非常稳定和有效的数字代码。与使用非交错网格的标准FD方案相比，在模型的内部和外部边界处实现边界条件要容易得多。使用CEFIT，可以在（r，z）半平面的二维矩形网格中处理轴对称三维问题。理论与数值计算之间的良好一致性证明了数值编码的准确性。此处未介绍的其他应用领域是声学显微镜中的波，多层系统中冲击回波测量的模拟以及任意旋转体中的轴对称波传播。

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来源
《Annual Symposium on Quantitative Nondestructive Evaluation; 19980719-24; Snowbird,UT(US)》|1998年|P.95-102|共8页
会议地点 SnowbirdUT(US)
作者
F. Schubert; A. Peiffer; B. Koehler;
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Fraunhofer-IZFP, Branch Lab EADQ Kruegerstrasse 22 D-01326 Dresden (Germany);

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原文格式 PDF
正文语种 eng
中图分类无损探伤仪器;
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CEFIT - A NUMERICAL MODELING TOOL FOR AXISYMMETRIC WAVE PROPAGATION IN CYLINDRICAL MEDIA

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