Axial flow impeller airfoil design method based on singular point distribution method

Abstract

The invention discloses a method for designing the wing form of an axial impeller based on a singularity distribution method. The method comprises the following steps: S1, calculating the basic geometric and flowing parameters of a whole and each stream surface; S2, calculating the component velocities of basic wing form spine nodes on each stream surface and the positions of the spine nodes; S3, circularly finishing operation on spines on each stream surface and terminating procedures. The density function for a vortex on each wing form spine is shown in the specification, and an addition item is shown in the specification. The method is suitable for designing the wing form of the axial impeller, the vortex density function and the addition item which are suitable for designing the wing form of the axial impeller are given, calculation steps are simple, and calculation amount is small. The wing form spines of which the geometric shapes and the hydraulic performance are satisfactory can be formed by the addition item. The vortex density function can ensure that the wing form which is in uniform stream meets expected boundary conditions. A large calculation amount required by the singularity distribution method is realized by a software algorithm, the design is convenient and high in speed, and the method can effectively improve design and manufacture accuracy and adapt to industrial design and production.

Description

technical field [0001] The invention relates to an axial flow impeller airfoil design method, in particular to an axial flow impeller airfoil design method based on a singular point distribution method. Background technique [0002] Due to its unique external characteristics, the high-lift, high-flow axial flow pump plays an irreplaceable role in many sectors of the national economy. It is a key equipment in the production lines of chemical, petroleum, mining, and metallurgical industries. In recent years, under the strong impetus of market demand, the domestic axial flow pump manufacturing industry has developed rapidly, the product structure has become increasingly diversified, and the applicable flow and lift ranges have been continuously extended. There are more than hundreds of domestic axial flow pump manufacturers specializing in and part-time. The output reached tens of thousands of units. [0003] Design is the basic guarantee of excellent products, and product per...

AI Technical Summary

Problems solved by technology

Perhaps it is for this reason that the vortex density of the airfoil bone line introduced in all the literatures is the refinement of the runner airfoil design experience, and can only be used for the design of the runner airfoil

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