Double-Sided Fluidic Oscillator Jet for Biaxial Sweeping
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Solution Overview
Problem
Conventional fluidic oscillators have limitations in achieving biaxial sweeping jet patterns and efficient heat transfer due to their uniaxial sweeping jet outlets and lack of secondary feedback loops.
Innovation Solution
A double-sided fluidic oscillator jet is designed with primary and secondary feedback loop units, two outlets, and a common mixing chamber, producing perpendicular and bi-stable pulsating flow oscillations, and featuring a chevron-shaped design nozzle for enhanced heat transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If conventional fluidic oscillators with uniaxial sweeping jet outlets are used, then the device structure is simple, but the cooling area coverage is limited
Solution Approach 1:
The patent transitions from uniaxial (single-direction) sweeping jet outlets to biaxial (two-direction) sweeping jet outlets by adding a second outlet perpendicular to the first. This dimensional expansion allows the coolant to sweep across both horizontal and vertical planes, dramatically increasing the cooling area coverage without requiring a completely different device architecture.
Solution Approach 2:
The fluidic oscillator is segmented into multiple outlet channels (at least two perpendicular outlets) that operate simultaneously. Each outlet generates its own sweeping jet pattern in a different direction, and the combined effect covers a broader area. This segmentation allows the system to maintain relative structural simplicity while achieving enhanced cooling coverage.
2Power
If conventional fluidic oscillators with single feedback loop are used, then the device complexity is low, but the heat transfer efficiency is insufficient
Solution Approach 1:
The patent combines multiple feedback loops (primary and secondary) within a unified fluidic oscillator structure. The primary feedback loop controls the main oscillation, while the secondary feedback loop introduces additional control mechanisms. These loops are merged into a single integrated device that produces perpendicular bi-stable pulsating flow oscillations, enhancing heat transfer efficiency through more complex flow patterns without requiring separate devices.
3Area of stationary object
If uniaxial sweeping jet pattern is used, then the flow structure is simple, but the cooling area coverage is limited
Solution Approach 1:
The flow pattern evolves from uniaxial (one-dimensional sweeping) to biaxial (two-dimensional sweeping) by introducing perpendicular oscillation components. The coolant jet now sweeps in both horizontal and vertical directions simultaneously, creating a cross-shaped or radial cooling pattern that covers significantly more area. This dimensional transition in flow pattern directly addresses the limited cooling coverage issue.
Solution Approach 2:
The system introduces dynamic, multi-directional flow oscillations that adapt and sweep across different areas of the target surface. Rather than a static or single-direction jet, the biaxial sweeping pattern dynamically covers expanding areas through coordinated oscillations in perpendicular directions, maximizing cooling area coverage through dynamic flow behavior.
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 double-sided fluidic oscillator achieves biaxial sweeping jet patterns, significantly increasing cooling area coverage and heat transfer efficiency over a target surface compared to conventional fluidic oscillators.
Implementation Method 1
The sweeping pattern produced by a fluidic oscillator is based on the principle of Coanda effect (the action in fluid mechanics whereby a flow along a solid surface tends to follow the curvature of the surface rather than separating)
Data Source
AI summary
A double-sided fluidic oscillator, includes a primary feedback loop unit, a secondary feedback loop unit with two outlet and one inlet, and a common mixing chamber. Two perpendicular oscillator jets operating at different oscillation frequencies produce perpendicular and bi-stable pulsating flow oscillations, simultaneously. The proposed design of the fluidic oscillator is a double-sided fluidic oscillator. Also, disclosed is a method of achieving an enhanced heat and mass transfer by better mixing due to the wide sweeping pattern over a target surface using the double-sided fluidic oscillator.