Low-Energy Dynamic Filter Using Dean Vortices
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Solution Overview
Problem
Current fluid-suspended particulate separation technologies in industrial applications require high energy and maintenance, and are limited by the distortion of Dean Vortices due to non-uniform density and viscosity effects, leading to inefficient separation of particles under gravitational influence.
Innovation Solution
The Low-Energy Dynamic Filter reorients the major axis of the spiral flow channel parallel to the gravity vector, minimizing gravitational effects and using elliptical flow channels with variable radii to optimize Dean Vortices formation and persistence, allowing for efficient separation of suspended and neutrally buoyant particles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional filter media and high-energy processes are used for particle separation, then separation effectiveness is improved, but energy consumption and maintenance requirements increase significantly
Solution Approach 1:
The patent replaces traditional mechanical filtration systems with high-energy consumption with a Dean Vortex-based separation system that utilizes fluid dynamics and centrifugal forces. The spiral flow channel geometry generates Dean Vortices that automatically separate particles from fluid without requiring additional mechanical energy input, thereby reducing energy consumption while maintaining separation effectiveness.
Solution Approach 2:
The Dean Vortex separation system is self-sustaining, using the kinetic energy already present in the flowing fluid to generate the separating forces. The spiral channel geometry converts the fluid's own flow energy into centrifugal and Dean Vortex forces that perform the separation function, eliminating the need for external energy input and reducing maintenance requirements.
2Use of energy by moving object
If Dean Vortices are used for particle separation, then energy consumption is reduced, but separation performance deteriorates when elements have gravitationally significant masses due to non-uniform density or viscosity
Solution Approach 1:
The patent applies different geometric parameters at different locations within the spiral flow channel to optimize separation for particles with varying density and viscosity characteristics. By varying the channel cross-section and curvature radius locally, the system creates optimized flow conditions at different radial positions, enabling effective separation of particles with gravitationally significant masses while maintaining low energy consumption.
Solution Approach 2:
The patent modifies the geometric parameters of the spiral flow channel, specifically the cross-sectional shape and curvature radius, to change the flow dynamics and Dean Vortex characteristics. These parameter changes enable the system to handle particles with non-uniform density and viscosity by creating flow conditions that maintain separation effectiveness across a broader range of particle properties.
3Speed
If rectangular flow channels with linearly increasing radius are used, then Dean Vortices can be generated, but gravitational force causes collapsing pressure that distorts the flow pattern
Solution Approach 1:
The patent employs an asymmetric spiral flow channel cross-section, specifically an elliptical or rectangular channel with different dimensions in the radial and axial directions. This asymmetry allows the channel to better accommodate the three-dimensional Dean Vortex structure and resist gravitational distortion, maintaining flow pattern stability while enabling effective particle separation.
Solution Approach 2:
The patent utilizes a spiral flow channel with continuously varying curvature radius, transitioning from a linearly increasing radius to a more smoothly curved profile. This curvature optimization reduces flow separation and maintains stable Dean Vortex formation throughout the channel, preventing gravitational collapse while preserving the separating flow pattern.
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
This approach significantly reduces energy consumption and maintenance, enabling continuous operation with high performance particle separation across a broader range of velocities and particle types, including those affected by gravity, while maintaining separation of particles unaffected by gravity.
Implementation Method 1
separating heterogeneous material flows into separate higher and lower concentrate streams using Dean Vortices
Implementation Method 2
the mechanism utilizing the opposing forces of hydrodynamic flow and centripetal force as a means of condensing and separating non-homogeneous particles in a fluid
Implementation Method 3
the mechanism utilizing the opposing forces of hydrodynamic flow and centripetal force
Implementation Method 4
the orthogonal gravitational force applies collapsing pressure to the Dean Vortices across the short axis of the Dean forces
Implementation Method 5
By constructing the major axis of the spiral implementation around which the Dean Vortices flow to be parallel to the gravity vector, the preferred embodiment nearly eliminates the effect of gravity on the suspended particles
Data Source
AI summary
A means to exploit the Dean Vortices for dynamic filtering on a macro scale intended for application in utility and industrial processes is disclosed. This method relies on an apparatus of computed construction to optimize the centripetal force and minimize the effect of gravity on the separation and effectiveness of the Dean Vortices. The method is also supported by an apparatus of construction which results in an optimized elliptical flow channel that enhances the formation and persistence of the Dean Vortices.