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为了提高叶轮机械设计工作的效率，将ＣＡＤ技术与三元流计算结合起来，开发适合叶轮机械的ＣＡＤ软件。以ＡｕｔｏＣＡＤＲ１３／ｆｏｒＷｉｎｄｏｗｓ９５为基础，用Ｃ语言开发了６条用于叶轮机械ＣＡＤ的实用扩展命令，能够显示叶片形状，生成和显示用于三元流计算的网格及将三元流计算结果图形化处理，包括绘制流场矢量图和等值线图。全部扩展命令集成到ＡｕｔｏＣＡＤ中运行。生成图形与ＡｕｔｏＣＡＤ完全兼容。是叶轮机械三元流动计算有力的辅助工具。
In order to improve the efficiency of the impeller mechanical design work, CAD technology and ternary flow calculation combine to develop CAD software suitable for impeller machinery. Based on AutoCADR13 / forWindows95, six practical extension commands for the mechanical design of the impeller were developed in C language to display the shape of the blades, generate and display a grid for the calculation of ternary flows, and graphically map the results of the ternary flows Processing, including drawing flow field vector and contour maps. All extended commands are integrated into AutoCAD. Generated graphics and AutoCAD fully compatible. Impeller mechanical ternary flow calculation is a powerful tool.