畸变图谱的绘制

本文介绍了一种用绘图仪绘制畸变图谱的技术,並讨论了数值逼近方法及边界条件对图谱的影响。文中建议用二元三次样条逼近压力分布来求得密网格节点上的压力值。文中的绘图技术也可用来绘制温度畸变图谱和其他类型的等值图。

The Drawing of Distortion Contour Maps

In the investigation of inlet/engine compatibility, the effects of the distorted pressure distortion on engine stability are considered not only by distortion indices but also by distortion contour maps. So distortion maps of given pressure data must be afforded.In this paper, the technique of drawing distortion contour maps with a plotter are described. The effects of the digital approaching and its boundary conditions on the drawing of the map are discussed. It is suggested that a two dimensional third order spline approach can be used to obtain the values of pressure at the node points of the fine mesh. The drawing technique described can be used as well to draw temperature or other contour maps.