径流叶轮直纹叶片的参数化型线自动提取算法

doi:10.7527/S1000-6893.2016.0250

材料工程与机械制造

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径流叶轮直纹叶片的参数化型线自动提取算法

周煜^1,2, 陈思莲^1,2, 杜发荣³, 丁水汀³

1. 北京航空航天大学交通科学与工程学院, 北京 100083;
2. 新能源汽车高效动力传动与系统控制北京市重点实验室, 北京 100083;
3. 北京航空航天大学能源与动力工程学院, 北京 100083

收稿日期:2016-07-07 修回日期:2016-09-05 出版日期:2017-05-15 发布日期:2016-10-19
通讯作者: 杜发荣 E-mail:dufrong@hotmail.com
基金资助:
国家自然科学基金（51205015）

Automatic extraction algorithm of parameterized streamlines from a radial-inflow turbomachinery ruled blade

ZHOU Yu^1,2, CHEN Silian^1,2, DU Farong³, DING Shuiting³

1. School of Transportation Science and Engineering, Beihang University, Beijing 100083, China;
2. Beijing Key Laboratory for High-efficient Power Transmission and System Control of New Energy Resource Vehicle, Beijing 100083, China;
3. School of Energy and Power Engineering, Beihang University, Beijing 100083, China

Received:2016-07-07 Revised:2016-09-05 Online:2017-05-15 Published:2016-10-19
Supported by:
National Natural Science Foundation of China (51205015)

摘要/Abstract

摘要：

流线族（SSL）作为复杂高精度径流式叶轮（RIT）的关键几何元素，对于RIT的建模和气动优化有着非常重要的作用。以RIT的多学科耦合设计为目标，研究了面向型面和特征的联合采集方法以获取RIT表面信息；基于线几何理论，提出了RIT直纹叶片子午流道几何（MS）及直母线矢量（SGVs）的提取方法；探讨了直纹母线矢量的等分算法；研究了可同时控制光顺和逼近程度的叶片型面流线族的拟合方法；建立起以SSL和子午流道几何为参数的径流式叶轮参数化模型，实现对任意RIT样件的SSL自动提取及叶轮的自动参数化建模，通过实例验证了该方法的有效性和可行性。

关键词: 径流叶轮, 直纹叶片, 直纹母线矢量, 流线族, 逆向工程

Abstract:

A set of streamlines (SSL), as a significant geometric element in complex radial-inflow turbomachinery (RIT) with high precision, plays a vital role in modeling and aerodynamic optimization of RIT. Aimed at multidisciplinary design of RIT, we develop an integrated acquisition method oriented towards the profile and characteristics of RIT to obtain the surface information of RIT. An extraction method of the meridional section (MS) and straight generatrix vectors (SGVs) of the RIT with the ruled surface is proposed based on line geometry theory. The division algorithm of SGVs is anlayzed. A method for SSL fitting is presented to control both the smoothing and approximation degree of the blade surface. A parametric model of RIT is established by using SSL and MS as parameters to realize automatic extraction of SSL from arbitrary RIT prototype and automatic parametric modeling of the impeller. A case example is given to demonstrate the effectiveness of the proposed strategy.

Key words: radial-inflow turbomachinery (RIT), ruled blade, straight generatrix vector, set of streamlines (SSL), reverse engineering

中图分类号:

V232.4

周煜, 陈思莲, 杜发荣, 丁水汀. 径流叶轮直纹叶片的参数化型线自动提取算法[J]. 航空学报, 2017, 38(5): 420592-420592.

ZHOU Yu, CHEN Silian, DU Farong, DING Shuiting. Automatic extraction algorithm of parameterized streamlines from a radial-inflow turbomachinery ruled blade[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2017, 38(5): 420592-420592.

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E-mail：hkxb@buaa.edu.cn

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主管单位：中国科学技术协会主办单位：中国航空学会北京航空航天大学

径流叶轮直纹叶片的参数化型线自动提取算法

Automatic extraction algorithm of parameterized streamlines from a radial-inflow turbomachinery ruled blade

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