Swirl Generator System for Uniform Axial Flow with Low Pressure Drop
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Solution Overview
Problem
Conventional fluid hydraulic systems fail to produce uniform and axi-symmetric swirling flows, leading to inconsistent mixing and significant pressure drops, as they rely on tangential injection methods and swirl vane devices that require extensive calibration and introduce substantial pressure losses.
Innovation Solution
A swirl generator system comprising a central chamber, upstream and downstream nozzles, and a plenum with injectors that radially tangentially discharge fluid into a main flow, allowing for controlled axi-symmetric swirling flow generation with minimal pressure drop, using spacers to adjust the hydraulic diameter of the discharge gap and incorporating chemical reactants for enhanced mixing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional tangential injection methods or swirl vane devices are used to induce swirl into main flow, then swirling flow is generated, but the flow field is non-uniform and non-axi-symmetric, and mixing characteristics cannot be predictably controlled
Solution Approach 1:
The injection system is segmented into multiple separate injection ports arranged tangentially around the plenum, each contributing to the overall swirl pattern. This segmentation allows precise control over flow distribution and enables predictable, uniform axi-symmetric swirling flow generation
Solution Approach 2:
The invention controls swirl characteristics by changing flow parameters (flow rates, pressures) to specific values that produce desired swirl intensities. By adjusting these parameters, the system achieves predictable and uniform flow fields with controllable mixing characteristics
2Reliability
If conventional swirl generators are used to produce desired swirl characteristics, then swirl flow is generated, but extensive calibration is required for each test configuration
Solution Approach 1:
The injection ports and plenum are pre-configured with specific geometries and flow distribution characteristics that inherently produce uniform axi-symmetric swirl. This preliminary design eliminates the need for extensive calibration during each test configuration change
Solution Approach 2:
The swirl generator design is universal and can be applied to different test configurations without requiring recalibration. The standardized plenum and injection port arrangement provides consistent performance across various applications
3Reliability
If conventional swirl vane devices are used to induce swirl, then rotational flow is created, but substantial pressure drops are introduced to the fluid system
Solution Approach 1:
The invention uses hydraulic principles with a plenum chamber to distribute flow evenly to multiple tangential injection ports. This hydraulic approach generates swirl with minimal pressure loss compared to mechanical swirl vane devices, as it utilizes fluid pressure distribution rather than mechanical resistance
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 system achieves predictable and uniform axi-symmetric swirling flows with reduced pressure loss, enabling effective mixing and stirring while allowing for precise control of swirl intensity and direction, outperforming conventional methods in terms of consistency and efficiency.
Implementation Method 1
a plenum feed connecting with the plenum inlet
Implementation Method 2
a slot connecting at a first end with the plenum discharge and connecting radially tangentially at a second end with the central chamber
Implementation Method 3
combining at least two miscible fluids through a controlled uniform and axi-symmetric mixing of such fluids
Data Source
AI summary
An apparatus and method for generating a swirl is disclosed that is used to induce an axi-symmetric swirling flow to an incoming flow. The disclosed subject matter induces a uniform and axi-symmetric swirl, circumferentially around a discharge location, thus imparting a more accurate, repeatable, continuous, and controllable swirl and mixing condition of interest. Moreover, the disclosed subject matter performs the swirl injection at a lower pressure drop in comparison to a more traditional methods and devices.