Fractal Orifice Plate for Enhanced Fluid Atomization
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Solution Overview
Problem
Standard single-hole orifice plates are inefficient in achieving high fluid atomization due to limited pressure drop and turbulence control, especially at high pressure-drop conditions, which restricts their effectiveness in industrial processes.
Innovation Solution
A fractal patterned orifice plate is introduced, featuring a self-similar multi-scale design that increases the perimeter-to-area ratio and induces multi-scale turbulent structures, enhancing pressure drop and turbulence control, thereby improving fluid atomization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a standard single-hole orifice plate is used, then the device complexity is low and manufacturing is simple, but the pressure drop is insufficient and atomization efficiency is limited
Solution Approach 1:
The orifice plate is divided into multiple holes arranged in a fractal pattern instead of using a single large hole. This segmentation increases the total perimeter-to-area ratio, enhancing boundary layer effects and pressure drop while maintaining a compact structure. The fractal arrangement of multiple holes at different scales creates more effective flow restriction and turbulence generation.
Solution Approach 2:
The orifice geometry transitions from a two-dimensional single hole to a multi-scale fractal pattern that incorporates spatial distribution across different dimensions. The fractal pattern creates a three-dimensional effective structure when viewed in terms of flow paths, increasing the effective perimeter and creating multi-scale turbulence structures that enhance pressure drop and atomization.
2Stress or pressure
If a fractal patterned orifice plate is used, then the pressure drop increases and atomization improves, but the manufacturing complexity increases
Solution Approach 1:
The fractal pattern parameters (such as the scaling factor, number of iterations, and hole size distribution) are optimized to achieve the desired pressure drop. By adjusting these parameters, the orifice plate can be tuned to provide specific pressure differentials while controlling manufacturing complexity. The self-similar fractal structure allows for systematic parameter variation without proportionally increasing manufacturing difficulty.
3Area of stationary object
If a fractal patterned orifice plate is used, then the perimeter-to-area ratio increases and boundary layer effects enhance, but the effective orifice area decreases
Solution Approach 1:
Different regions of the orifice plate have different local characteristics through the fractal pattern. Areas with smaller holes contribute more to boundary layer formation and pressure drop, while larger holes maintain overall flow capacity. This local variation in hole size creates optimized flow paths that enhance atomization without completely blocking the orifice.
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 fractal orifice plate achieves a larger pressure drop and more effective atomization, with a 15% increase in pressure differential corresponding to nearly twice the atomization efficiency, and reduces downstream pressure by up to 60%, allowing for efficient vaporization without additional energy input.
Implementation Method 1
This in turn, increases the cross-sectional area of what is referred to as the boundary layer (a phenomenon that exists in any confined viscous fluid flow) which decreases the effective area of the orifice while maintaining the same mean flow velocity. Thus a larger pressure drop is achieved for the same orifice area.
Implementation Method 2
the multi-scale design of the orifice will induce a multi-scale turbulent structure in the fluid flow. The increase in turbulent intensity further lowers the downstream pressure which produces a larger pressure differential.
Implementation Method 3
In order to atomize fluid flowing through a pipe one may utilize what is commonly referred to as the Venturi effect, that is, the reduction in fluid pressure that results when a fluid flows through a constricted section of pipe.
Data Source
AI summary
A conduit with a terminal end, wherein proximate to the terminal end is an orifice plate, wherein the orifice plate has at least one orifice with at least one perimeter, and the at least one perimeter is in a fractal pattern, wherein the conduit can be a nozzle assembly for a flow, wherein examples of a nozzle assembly include a fuel injector, a shower head, a faucet head, and a nozzle head, wherein proximate to the terminal end of each nozzle is the orifice plate with a fractal pattern that provides a downstream spray pattern.