A method for constructing a propeller tip vortex contraction model
By performing dimensionless processing and stretching exponential model fitting on the propeller wake field data, the shortcomings of existing models in predicting under multiple propeller types and multiple parameters are solved, achieving high-precision tip vortex contraction prediction and cost reduction.
CN122333643APending Publication Date: 2026-07-03DALIAN MARITIME UNIVERSITY
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- DALIAN MARITIME UNIVERSITY
- Filing Date
- 2026-04-30
- Publication Date
- 2026-07-03
Smart Images
Figure CN122333643A_ABST
Abstract
This invention discloses a method for constructing a propeller wake tip vortex contraction model, comprising: acquiring propeller wake field data under given operating conditions and performing dimensionless processing on the spatial coordinates; identifying and locating tip vortex structures in the dimensionless wake field, and obtaining a tip vortex contraction trajectory dataset through axial tracking; fitting the trajectory data using a stretched exponential wake vortex contraction model to extract a set of contraction characteristic parameters; establishing a mapping relationship between the input characteristic parameters of the novel propeller and the set of novel propeller contraction characteristic parameters through a regression optimization method to obtain a coefficient matrix; and, for the novel propeller, combining its geometric data, operating parameters, and the coefficient matrix, outputting the tip vortex contraction curve using the stretched exponential wake vortex contraction model. This invention can accurately predict the tip vortex contraction law of different propellers, providing reliable model support for propeller wake field analysis, noise assessment, and optimization design.
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