Compressor Rotor Blade Airfoil Shape Optimization
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Solution Overview
Problem
Conventional airfoil designs in compressor rotor blades of gas turbines suffer from aerodynamic inefficiencies, leading to performance losses and reduced system efficiency due to suboptimal energy transfer and fluid interaction.
Innovation Solution
The airfoil shape is defined by specific Cartesian coordinate values in Tables I-IV, which when scaled, form smooth continuing arcs and surfaces, creating a nominal profile that enhances aerodynamic efficiency by optimizing the suction-side and pressure-side surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If conventional airfoil designs are used in compressor rotor blades, then manufacturing and design simplicity are maintained, but aerodynamic efficiency is reduced due to suboptimal energy transfer and fluid interaction losses
Solution Approach 1:
The patent applies parameter changes by precisely modifying the geometric parameters of the airfoil based on Cartesian coordinate data. The suction-side and pressure-side surfaces are defined by specific coordinate points that optimize the airfoil shape for enhanced aerodynamic performance, energy transfer, and fluid interaction characteristics while maintaining manufacturability through systematic parameter definition
2Productivity
If optimized airfoil shapes with specific Cartesian coordinate values are implemented, then aerodynamic efficiency and energy transfer are improved, but manufacturing precision requirements increase
Solution Approach 1:
The airfoil is segmented into multiple coordinate points along its surface, with specific Cartesian coordinate values provided for the suction-side and pressure-side. This segmentation allows for precise definition of the airfoil geometry while enabling systematic manufacturing approaches where each coordinate point can be targeted individually during the manufacturing process
Solution Approach 2:
The patent replaces traditional empirical or simplified geometric definitions with a comprehensive Cartesian coordinate system that mathematically defines the airfoil shape. This substitution enables more accurate control of the airfoil geometry through computational methods and precision machining, reducing reliance on approximate manufacturing techniques
Data Source
AI summary
A rotor blade includes an airfoil having an airfoil shape. The airfoil shape has a nominal profile substantially in accordance with Cartesian coordinate values of X, Y and Z set forth in one of Table I, Table II, Table III, or Table IV. The Cartesian coordinate values of X, Y and Z are non-dimensional values from 0% to 100% convertible to dimensional distances expressed in a unit of distance by multiplying the Cartesian coordinate values of X, Y and Z by a scaling factor of the airfoil in the unit of distance. The X and Y values, when connected by smooth continuing arcs, define airfoil profile sections at each Z value. The airfoil profile sections at Z values are joined smoothly with one another to form a complete airfoil shape.