Enhanced-Surface Wall Patterning for Heat Transfer and Fluid Mixing
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Solution Overview
Problem
Existing enhanced-surface walls for heat transfer and fluid-mixing devices do not adequately increase surface area and turbulence, leading to suboptimal heat transfer and fluid mixing performance.
Innovation Solution
A method of forming enhanced-surface walls by impressing secondary and primary patterns onto material surfaces, which increases surface density and transverse dimensions without reducing the minimum dimension, using techniques like cold-working and pattern combinations such as interlocking paving blocks and step-like functions, to create enhanced-surface walls for heat transfer devices and fluid-mixing apparatus.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If existing enhanced-surface wall methods are used, then surface area is increased, but heat transfer and fluid mixing performance remain suboptimal
Solution Approach 1:
The enhanced-surface wall is segmented into multiple pattern types (first pattern, second pattern, third pattern) that are distributed across different regions. Each pattern type contributes differently to surface area enhancement and fluid interaction, creating a composite structure that optimizes both heat transfer and fluid mixing performance
Solution Approach 2:
Different regions of the enhanced-surface wall are assigned different pattern characteristics. Regions with higher heat transfer requirements have patterns optimized for thermal exchange, while regions requiring better fluid mixing have patterns that promote turbulence and circulation, achieving local optimization of performance
2Area of moving object
If existing enhanced-surface wall methods are used, then surface area is increased, but fluid mixing performance remains suboptimal
Solution Approach 1:
The wall surface is divided into multiple pattern zones that create varied flow paths and turbulence levels, enhancing fluid mixing effectiveness across different regions of the apparatus
Solution Approach 2:
The pattern design incorporates multi-dimensional surface features including protrusions, recesses, and varying pattern densities that create complex three-dimensional flow structures, significantly improving fluid mixing performance
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 method significantly enhances surface area and turbulence, improving heat transfer and fluid mixing performance by increasing surface density and transverse dimensions while maintaining structural integrity, thereby optimizing the performance of heat transfer and fluid-mixing devices.
Implementation Method 1
The step of impressing said secondary patterns onto each of said initial surfaces includes cold-working the material
Data Source
Figure 1A~2C
Figure 3A~3D
Figure 4
AI summary
A method of forming enhanced-surface walls for performing a process Is disclosed. The method broadly comprises the steps of: providing a length of material having opposite initial surfaces, said material having a longitudinal centeriine positioned substantially midway between the surfaces, each of said initial surfaces having a initial surface density; impressing secondary patterns having surface densities onto each of said initial surfaces to distort said material; and impressing primary patterns having surface densities onto each of such distorted surfaces to further distort said material and to further increase the surface densities on each of said surfaces.