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

ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2017, Vol. 38 ›› Issue (5): 420592-420592.doi: 10.7527/S1000-6893.2016.0250

• Material Engineering and Vehicle Conceptual Design • Previous Articles Next Articles

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)

Abstract

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

CLC Number:

V232.4

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

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