Transformation of a polynomial for a contraction wall profile

被引：33

作者：

Brassard, D ^{[1
]}

Ferchichi, M ^{[1
]}

机构：

[1] Lakehead Univ, Dept Mech Engn, Thunder Bay, ON P7B 5E1, Canada

来源：

JOURNAL OF FLUIDS ENGINEERING-TRANSACTIONS OF THE ASME | 2005年 / 127卷 / 01期

关键词：

Fifth degree polynomials - Quadratic functions - Second-order derivatives;

D O I：

10.1115/1.1852492

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

A transformation of a low-speed, wind tunnel contraction profile was developed for allowing fifth-order polynomial to be fitted into a 'by-eye' curve. It was observed that the transformation for any continous, smooth function and the first and second order derivatives of the contraction wall profile vanish at the inlet and outlet. A smaller radius at the oulet while maintaining a longer transition of the outlet radius to the test section, linear functions can be choosen to generate a large radius at the inlet. The results show that the transformation generates a wide range of contraction wall profiles described by a convenient continuous function for a designer to chose form as opposed to the purely 'by-bye'design.

引用

页码：183 / 185

页数：3