A Modeling Method of Compressor Blade Suction Surface Based on Streamline Field Theory

A modeling method and suction surface technology, applied in electrical digital data processing, special data processing applications, instruments, etc., can solve problems such as inability to obtain well-solved curves, high complexity, complex differential equations, etc. More scientific, reduced number of parameters, high smoothness effect

Active Publication Date: 2019-01-01
BEIHANG UNIV
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Problems solved by technology

The forms of these differential equations are relatively complex, such as the NS equation describing the momentum conservation of viscous incompressible fluids. The complexity of the problem itself is also very high, and its solution curve (ie streamline) cannot be obtained well.

Method used

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  • A Modeling Method of Compressor Blade Suction Surface Based on Streamline Field Theory
  • A Modeling Method of Compressor Blade Suction Surface Based on Streamline Field Theory
  • A Modeling Method of Compressor Blade Suction Surface Based on Streamline Field Theory

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Embodiment Construction

[0034] The present invention will be further described in detail with reference to the accompanying drawings and embodiments.

[0035] A method for modeling the suction surface of a compressor blade based on the streamline field theory provided by the present invention, such as figure 1 shown, including the following steps:

[0036] Step 1: Acquisition and preprocessing of data points.

[0037] The invention processes the data obtained from the preliminary design of the compressor blades, obtains the suction surface data set of the compressor blades and imports them.

[0038] The compressor blade is a rotor67 rotor, which is a compressor rotor blade that has been fully tested abroad, the geometry is disclosed, and it is used to provide various research institutions for research. Detailed data, geometric characterization and aerodynamic performance of compressor blades are provided in the following literature.

[0039] Strazisar A J, et al.Laser Anemometer Measurements in a ...

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Abstract

The invention provides a method for modeling a suction surface of a press blade based on a streamline field theory, and relates to a power system, a streamline field technique and a curve and surface shaping technique. The method comprises the following steps of pretreating a data set of the suction surface of the press blade, selecting a nonlinear cutoff system which is approximated and simplified by an NS (Navier-Stokes) equation, and fitting the primitive blade shape of the suction surface, so as to obtain a primitive curve; constructing a surface streamline field of the suction surface, obtaining an intermediate streamline field of the primitive curve by linear interpolation, and obtaining a nonlinear system of the middle part of the blade by a nonlinear homotopy method. The method has the advantages that based on the streamline field, a new modeling type is applied, the dynamics properties of the curve surface are considered, the number of parameters of the original modeling method is reduced, the higher smoothness is obtained, and the certain assistance and enlightenment are realized on the design optimizing and processing.

Description

technical field [0001] The invention relates to a power system, a streamline field technology and a curved surface modeling technology, and belongs to the field of computer-aided geometric design, in particular to a modeling method for the suction surface of a compressor blade based on the streamline field theory. Background technique [0002] The manufacturing industry has always been the foundation of the national economy and plays a vital role in the country's economic development. With the continuous improvement of advanced manufacturing industries such as modern automobiles, ships, and aerospace for the shape, processing accuracy, surface quality and processing efficiency of complex curved surface parts, the high-efficiency and high-precision CNC machining of complex curved surface workpieces has become a national strategy. The urgent needs of equipment and high-tech industries and the commanding heights of manufacturing technology. [0003] The main factors affecting ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
CPCG06F30/15Y02T90/00
Inventor 郑志明姜鑫董暄雨苏澄霍冠英
Owner BEIHANG UNIV
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