Dual Spinner Vortex Cavity Apparatus for Plasma Compression
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Solution Overview
Problem
Existing plasma compression systems face issues with the formation of a smooth vortex cavity due to strong vertical shear layers and interaction with stationary walls, leading to destabilization and poor surface quality, along with challenges in controlling the fluid parameters in open systems.
Innovation Solution
The apparatus employs a vessel with two rotatable spinners and a fluid circulation system that injects and recirculates fluid to create a vortex cavity with controlled angular momentum, positioning the spinners to prevent shear layers and blockage, and using a motor to adjust rotational speeds for smooth interface formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a bath tub vortex pumping system is used to create a vortex cavity, then the cavity can be formed, but the liquid/gas interface becomes unstable with high-frequency surface ripples
Solution Approach 1:
The system divides the vortex cavity formation into two independent stages: first forming the vortex without a cavity (to establish stable rotation), then introducing gas to form the cavity. This segmentation prevents interface instability by separating the vortex generation from the cavity formation processes.
Solution Approach 2:
The system performs preliminary vortex formation by rotating the liquid before introducing gas to create the cavity. This preliminary action establishes a stable rotational flow pattern that prevents high-frequency surface ripples when the cavity is subsequently formed.
2Reliability
If the vortex cavity extends over the entire vessel height, then the cavity is formed, but the drainage area is blocked causing increased vertical velocity and shear
Solution Approach 1:
The system extracts the harmful effect by preventing the vortex cavity from extending to the drainage hole. The cavity is intentionally limited in height to maintain a safe distance from the drainage area, thereby eliminating blockage and the associated vertical shear and precession problems.
3Productivity
If an open system with decoupled fluid injection and drainage is used, then fluid circulation is achieved, but precise control of vortex cavity parameters becomes difficult
Solution Approach 1:
The system implements feedback control by measuring actual vortex cavity parameters (such as cavity height, radius, and rotation speed) and using this information to adjust fluid injection and drainage rates. This closed-loop control enables precise parameter control while maintaining continuous fluid circulation.
4Speed
If strong vertical shear layers are present near the interface, then vortex rotation is maintained, but the liquid/gas interface quality deteriorates
Solution Approach 1:
The system changes the rotational speed parameter by controlling the rotation rate of the liquid to an optimal value that maintains sufficient vortex rotation while minimizing vertical shear. This parameter optimization ensures both vortex maintenance and interface smoothness.
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 results in a stable, smooth vortex cavity that enhances plasma compression efficiency by eliminating high-frequency ripples and allowing precise control over fluid parameters, improving the quality of the liquid/gas or liquid/vacuum interface.
Implementation Method 1
inject the rotation fluid into the vessel such that the fluid rotates in the vessel with sufficient angular momentum to form a vortex cavity
Implementation Method 2
a first spinner with a rotatable face surface which is rotatably mounted inside the vessel and a second spinner with a rotatable face surface which is rotatably mounted inside the vessel
Data Source
AI summary
Examples of system for generating vortex cavity are disclosed. The system comprises a vessel into which a fluid is injected through one or more inlet ports and a fluid circulating system configured to circulate the fluid through the vessel such that the fluid is removed from the vessel through an outlet port and is returned back into the vessel through the one and more inlet ports. A first spinner is mounted at one wall of the vessel while a second spinner is mounted at the opposite wall of the vessel such that the second spinner is at some distance away from the first spinner and it faces the first spinner. When the fluid circulating system starts circulating the fluid within the vessel a vortex cavity is formed that extends between the first and the second spinners so that one end of the vortex cavity sits on the first spinner while the opposite end of the vortex cavity sits on the second spinner.