三维流场测定中五孔测针标定曲线的数学模型

The Mathematical Model of Demarcated Curve of Measuring Needle with Five Holes in Measuring Three-dimensional Flow Field

分析了五孔测针标定曲线存在的问题 ,在最小二乘法基础上 ,建立了标定曲线的数学模型 ,完成了标定曲线的最优拟合 ,为三维流场的准确、自动测试奠定了理论基础。

The mathematical model on a series of demarcated curves of measuring needle with five holes which is one kind of pressure inducing elements is builded by using the method called minimal error square summation,which offers possibility for effectively using sensor technology and computer technology in axautomatic test of three dimensional flow field.