Non-Zero-Mass-Flux Jet Device With Segmented Chamber
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Solution Overview
Problem
Conventional synthetic jet devices with zero-net-mass-flux flow suffer from insufficient discharge, low replacement rate, and poor cooling performance, limiting their effectiveness in flow field control, combustion, and heat management applications.
Innovation Solution
A jet device with a chamber, nozzle, and lateral channel connected via an arc and block, utilizing a reciprocating piston to create a non-zero-net-mass-flux jet flow, where the piston is activated by a piezoelectric or sonic-electric film, allowing fluid to flow out and back into the chamber, and an independent fluid source in the lateral channel enhances mass flux.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a conventional synthetic jet device with zero-net-mass-flux flow is used, then the device structure is simple and easy to manufacture, but the discharge efficiency and cooling performance are insufficient
Solution Approach 1:
The device is segmented into multiple functional components: a chamber divided into a first chamber and a second chamber by a partition, with separate nozzles (first nozzle and second nozzle) for different fluid paths. This segmentation allows independent control of fluid flow in each chamber, enabling non-zero-net-mass-flux operation while maintaining manufacturing feasibility through modular construction
Solution Approach 2:
The invention transitions from the conventional single-chamber zero-net-mass-flux design to a dual-chamber configuration with separate fluid paths. By adding the dimension of independent chamber control and separate nozzles, the system achieves non-zero-net-mass-flux flow while maintaining structural simplicity through the partition wall that naturally divides the space
2Device complexity
If a conventional synthetic jet device with zero-net-mass-flux flow is used, then the device structure is simple, but the replacement rate and cooling performance are poor
Solution Approach 1:
The partition wall segments the chamber into two independent chambers, each with its own nozzle and fluid path. This allows simultaneous operation of multiple fluid streams with different mass fluxes, dramatically increasing the overall fluid replacement rate while keeping each individual chamber structure simple and easy to manufacture
Solution Approach 2:
The invention changes the fundamental parameter of mass flux from zero-net-mass-flux to non-zero-net-mass-flux by allowing different fluid volumes to be expelled and injected through the separate nozzles. This parameter change enables higher fluid replacement rates while the partitioned structure maintains manufacturing simplicity
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 discharge efficiency and cooling performance by providing a non-zero-net-mass-flux jet, enhancing heat management and flow control capabilities compared to conventional synthetic jet devices.
Implementation Method 1
the piston is activated by a piezoelectric or sonic-electric film
Data Source
AI summary
A jet device is provided in the present invention. The jet device includes a chamber having a nozzle and a lateral channel, wherein the lateral channel is disposed along the outer side of a first side of the chamber, the nozzle is disposed at one end of the lateral channel and the chamber is connected with the lateral channel via the nozzle which is connected with the external space, wherein the fluid is filled in the chamber, the nozzle and the later channel and an arc and a block are disposed at the connection of the nozzle and the lateral channel; and a piston disposed at a second side of the chamber.