Radial Wave Rotor Offset Passageways Power Density
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Solution Overview
Problem
Conventional wave rotors are limited by size, sensitivity to engine speed changes, and inefficiencies in fluid flow, making them less viable for commercial applications and requiring improvements in performance and geometry.
Innovation Solution
A radial wave rotor design with offset fluid passageways, stacked layers of radial channels, and internal/external turbomachinery, which enhances power density, efficiency, and flow scavenging, while reducing pressure losses and manufacturing costs, and allows for easier modeling and analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If axial wave rotor design is used, then traditional design is simpler to manufacture, but power density is lower and size is larger
Solution Approach 1:
The patent transitions from an axial wave rotor design to a radial wave rotor design, changing the dimensional orientation of fluid passageways from axial to radial. This dimensional change enables higher power density while maintaining manufacturability through the systematic arrangement of radial channels that can be integrated into the rotor structure.
Solution Approach 2:
The radial wave rotor employs stacked layers of generally radial channels, segmenting the fluid passage system into multiple discrete radial channels arranged in concentric layers. This segmentation allows for improved power density through parallel flow paths while maintaining manufacturing simplicity through standardized channel geometries that can be produced using conventional machining techniques.
2Loss of energy
If traditional wave rotor design is used, then manufacturing is straightforward, but efficiency is lower and pressure losses are higher
Solution Approach 1:
By reorienting fluid passageways from axial to radial configuration, the patent reduces pressure losses through more direct flow paths and improved centrifugal force utilization. The radial arrangement allows fluid to move more efficiently from inlet to outlet, reducing energy losses while remaining manufacturable through standard machining processes.
Solution Approach 2:
The patent incorporates local variations in channel geometry and stacking arrangements to optimize flow characteristics at specific locations. Different radial channels can have varying cross-sectional areas and lengths tailored to local flow requirements, improving overall efficiency while maintaining manufacturing feasibility through localized geometric modifications rather than complete design complexity.
3Adaptability or versatility
If axial wave rotor is used, then traditional geometry is simpler, but sensitivity to engine speed changes is reduced
Solution Approach 1:
The radial wave rotor geometry provides enhanced sensitivity to engine speed changes through its inherent radial flow characteristics. The radial arrangement of channels and the associated centrifugal forces create more responsive flow patterns that adapt more sharply to speed variations, improving adaptability while maintaining manageable geometric complexity through systematic channel arrangement.
Solution Approach 2:
The radial wave rotor design incorporates dynamic flow characteristics where centrifugal forces and radial pressure gradients create more responsive flow patterns that adapt to changing engine speeds. The stacked layered configuration allows for dynamic adjustment of flow paths and pressure distributions, enhancing sensitivity to speed changes while maintaining geometric systematicity for ease of manufacture.
4Loss of energy
If conventional collectors and diffusers are used, then traditional design is simpler, but pressure losses increase
Solution Approach 1:
The patent eliminates conventional collectors and diffusers from the design by integrating flow collection and distribution functions directly into the radial channel arrangement. The radial channels themselves serve as the flow paths, removing the need for separate collecting components that would increase pressure losses. This extraction of unnecessary components reduces energy losses while maintaining design simplicity through integrated geometry.
Solution Approach 2:
The patent merges the functions of collectors, diffusers, and flow paths into a single integrated radial channel system. The radial channels simultaneously serve as flow paths, collection channels, and distribution networks, eliminating the need for separate components. This merging reduces pressure losses by eliminating additional flow paths and components while maintaining manufacturing simplicity through unified geometric design.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The radial wave rotor achieves higher power density, improved efficiency, and smaller size compared to axial wave rotors, with simplified design analysis and reduced pressure losses, along with enhanced flow scavenging and aerodynamic control, making it more commercially viable.
Implementation Method 1
The centrifugal forces of the fluid, created by the present invention, advantageously improve flow scavenging and compression.
Data Source
AI summary
A wave rotor apparatus is provided. In another aspect of the present invention, a radial wave rotor includes fluid passageways oriented in a direction offset from its rotational axis. A further aspect of the present invention employs stacked layers of generally radial channels in a wave rotor. Moreover, turbomachinery is located internal to a wave rotor in yet another aspect of the present invention. In yet another aspect of the present invention, a radial wave rotor has an igniter and fuel injector. Correctional passages are employed in still another aspect of the present invention wave rotor.