Indexed by:
期刊论文
First Author:
Yang, J.
Correspondence Author:
Liu, Y (reprint author), Dalian Univ Technol, Sch Energy & Power Engn, Dalian, Peoples R China.
Co-author:
Liu, Y.,Wang, X.,Wu, H.
Date of Publication:
2017-05-04
Journal:
INVERSE PROBLEMS IN SCIENCE AND ENGINEERING
Included Journals:
SCIE、EI
Document Type:
J
Volume:
25
Issue:
5
Page Number:
633-651
ISSN No.:
1741-5977
Key Words:
Inverse method; turbomachinery; design; pressure loading; computational
fluid dynamics
Abstract:
An improved inverse method for turbomachinery design is developed in this paper. A strict 'no-slip' boundary condition is imposed during the flow time marching process, and a virtual movement velocity is computed based on characteristics boundary conditions according to the difference of specified and calculated pressure loading, then the camber line of the blade is moved accordingly. A new 'inverse' time step calculation method is proposed to make the value of the 'inverse' time step case-independent, and a coupled non-uniform rational B-spline (NURBS) smoothing technique is used to improve the robustness of the solver, also guarantee the manufacturability of the obtained blade. Two-dimensional test cases, including compressor and turbine cascades, are adopted to validate the method. Then, the method is extended to three dimensions, and a high-loaded rotor of a fan stage is redesigned by the method in a stage environment. The final results indicate a fairly large performance gain, which demonstrates the effectiveness of the improved method.
Translation or Not:
no
