Vortex Flow Control Device With Inclined Terminal Portion
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Solution Overview
Problem
Existing vortex flow control devices do not effectively manage flow rates under varying pressure conditions, leading to inefficient vortex formation and turbulence, which affects the reliability and adaptability of storm water management systems.
Innovation Solution
A vortex flow control device with a housing design featuring a curved outer wall, a planar portion, and a terminal portion inclined at an angle between 85° and 95°, inducing turbulence and optimizing flow characteristics by creating a circulating flow that enhances pressure handling and turbulence intensity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the inlet is configured to induce circulating flow, then vortex formation is improved, but turbulence increases causing inefficient flow control
Solution Approach 1:
The outer wall is designed with different geometric characteristics at different locations: a curved portion for smooth flow guidance, a planar portion for flow direction control, and a terminal portion with specific inclination (85°-95°) for turbulence management. This local differentiation of geometric properties enables the device to generate reliable vortex flow while controlling turbulence in specific regions.
Solution Approach 2:
The curved portion of the outer wall is designed with a specific radius of curvature to guide the fluid flow smoothly into the vortex chamber. The curvature transition from the curved portion to the planar portion creates optimal flow conditions for vortex formation while minimizing unwanted turbulence through careful geometric design.
2Reliability
If the terminal portion is inclined at 85°-95°, then turbulence is induced for better flow control, but pressure loss increases
Solution Approach 1:
The terminal portion of the outer wall is inclined at a specific angle range (85°-95°) relative to the planar portion. This parameter optimization creates sufficient turbulence for effective flow control while minimizing excessive pressure loss by avoiding perpendicular (90°) or overly shallow angles.
Solution Approach 2:
The terminal portion is designed to extend only partially into the vortex chamber, creating just enough turbulence to maintain effective flow control without excessive energy dissipation. The inclination angle and extension length are optimized to provide sufficient flow management while avoiding over-turbulization that would cause unnecessary pressure loss.
3Reliability
If the curved portion extends around the axis over 270°, then vortex formation is enhanced, but device complexity increases
Solution Approach 1:
The curved portion of the outer wall extends circumferentially around the axis over an angle of not less than 270°, creating an effective vortex-generating geometry while maintaining a relatively simple housing structure. This curved configuration provides sufficient vortex stability without requiring complex multi-component assemblies.
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 device achieves improved flow control by maintaining lower flow rates over a broader pressure range, supporting higher pressure differences, and reducing the likelihood of blockages, while allowing for manufacturing flexibility through adjustable template units and one-piece molding processes.
Implementation Method 1
the inflowing water generates a vortex within the housing so restricting outflow through the outlet
Implementation Method 2
fluid entering the vortex chamber through the inlet induces a circulating flow within the vortex chamber about the axis
Implementation Method 3
whereby turbulence is induced in the region of the inlet by fluid entering the vortex chamber through the inlet
Data Source
AI summary
A vortex flow control device is manufactured by forming a template unit having end walls of which the wall has an outlet opening, and a partial outer wall. The partial outer wall has an opening. A plate is subsequently secured to the template unit to partially close the opening, to leave an inlet. The size of the plate is selected so as to result in an inlet 30 sized to achieve required flow characteristics for the finished device. The plate his inclined to a planar portion on the opposite side of the inlet at an angle in the range 85° to 95°, so as to induce turbulence in the region of the inlet.