Non-planar Target Surface for Droplet Shockwave Intensification
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Solution Overview
Problem
Existing methods for generating high localized energies through inertial confinement fusion, such as sonoluminescence and high-speed droplet impacts, have not been validated or replicated effectively for practical application in fusion power generation.
Innovation Solution
A method and apparatus for impacting high-velocity liquid droplets onto a non-planar target surface, which is shaped to intensify the shockwave within the droplet, maintaining supersonic contact patch speed and focusing energy for longer, thereby enhancing peak energy densities and potential for inertial confinement fusion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stress or pressure
If a planar target surface is used for high-speed droplet impact, then the device complexity is low, but the peak energy density achieved is insufficient for effective inertial confinement fusion
Solution Approach 1:
The patent applies curvature to the target surface by using a concave spherical or hemispherical geometry instead of a planar surface. This curved surface focuses the shockwave generated by droplet impact toward the droplet center, intensifying the peak energy density and pressure at the focal point to achieve conditions suitable for inertial confinement fusion.
2Stress or pressure
If a non-planar target surface is used to intensify the shockwave, then the peak energy density increases, but the manufacturing precision requirements increase
Solution Approach 1:
The concave spherical or hemispherical shape provides a mathematically defined geometry that can be manufactured with standard precision techniques. The curvature radius is specifically chosen to match the droplet diameter, creating a predictable focal point for shockwave intensification while maintaining manufacturability through conventional precision machining or molding methods.
3Power
If high-speed droplet impact is used to generate shockwaves, then the energy concentration is achieved, but the reliability of fusion reaction generation is insufficient due to lack of validation and replication
Solution Approach 1:
The patent incorporates preliminary actions including: (1) Precise droplet velocity control through specialized launch mechanisms before impact; (2) Pre-positioning of bubbles within the droplet using controlled injection or nucleation methods; (3) Pre-shaping the target surface with specific curvature radius matched to droplet diameter. These preliminary preparations ensure consistent and reliable fusion reaction conditions upon impact.
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 solution achieves higher peak energy densities and increased success in generating inertial confinement fusion, with potential applications in nuclear fusion reactions and the production of tritium or fast neutron sources, even if the fusion efficiency is below net energy production levels.
Implementation Method 1
directing said liquid droplets at a non-planar target surface to cause a shockwave in the droplets upon impact
Implementation Method 2
maintaining supersonic contact patch speed and focusing energy for longer
Data Source
AI summary
A method of impacting liquid droplets onto a surface includes providing a series of liquid droplets, and directing the liquid droplets at a non-planar target surface to cause a shockwave in the droplets upon impact. An apparatus for impacting liquid droplets onto a surface includes a mechanism to produce a series of liquid droplets, and a mechanism to direct the liquid droplets at a non-planar target surface to cause a shockwave in the droplets upon impact. The non-planar target surface is shaped to intensify the shockwave in the droplets.