Constant-Area Nozzle Waterway for Laminar Blade Spray
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current hydraulic nozzles introduce turbulence and cavitation into the water stream, leading to undesirable fluid dynamics, including reduced spray distance, shape, and penetrating power, due to non-smooth transitions and varying cross-sectional areas between the nozzle entry and exit.
Innovation Solution
A nozzle with a specialized waterway featuring a smooth, continuous transition and constant cross-sectional area between the entry and exit apertures, combined with beveled edges to reduce turbulence, resulting in a laminar flow and improved spray pattern.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If current nozzle designs are used to convert circular hose flow to blade spray shape, then spray shape is improved, but turbulence and cavitation are introduced into the water stream
Solution Approach 1:
The nozzle employs curved transition surfaces instead of sharp angles or flat surfaces. The waterway transitions smoothly from circular to rectangular shape through rounded contours, eliminating abrupt geometric changes that cause turbulence and cavitation while maintaining the desired blade spray shape.
Solution Approach 2:
The nozzle maintains a constant cross-sectional area throughout the waterway, transitioning from a circular entry to a rectangular exit while preserving uniform flow parameters. This constant area design prevents velocity changes that would generate turbulence, while the shape transformation achieves the desired spray pattern.
2Shape
If non-smooth transitions are used between circular entry and blade-shaped exit, then spray shape is achieved, but fluid dynamics are degraded
Solution Approach 1:
The nozzle employs curved transition surfaces instead of sharp angles or flat surfaces. The waterway transitions smoothly from circular to rectangular shape through rounded contours, eliminating abrupt geometric changes that cause turbulence and cavitation while maintaining the desired blade spray shape.
Solution Approach 2:
The waterway is designed with continuous, smooth transitions without interruptions or abrupt changes. The constant cross-sectional area ensures continuous, uniform flow throughout the nozzle, eliminating disruptions that would degrade fluid dynamics while maintaining spray shape.
3Shape
If varying cross-sectional area is used in the waterway, then spray pattern is formed, but fluid velocity changes cause unwanted turbulence
Solution Approach 1:
The nozzle maintains a constant cross-sectional area throughout the waterway, transitioning from a circular entry to a rectangular exit while preserving uniform flow parameters. This constant area design prevents velocity changes that would generate turbulence, while the shape transformation achieves the desired spray pattern.
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 nozzle achieves enhanced water spray distance, penetrating power, and shape by minimizing turbulence, producing a desirable laminar spray pattern suitable for firefighting applications.
Implementation Method 1
the geometric transition of the waterway between the entry aperture and exit aperture is configured to be smooth, gradual, and continuous... the cross-sectional area of the waterway remains constant along the waterway... This is to say that the area of the nozzle entry aperture, the area of the nozzle exit aperture, and the cross-sectional area of the waterway at any point between the entry aperture and the exit aperture are equal
Data Source
AI summary
This disclosure concerns a liquid nozzle with a specialized waterway which produces a desirable water spray pattern. The nozzle can be applied to a variety of liquid conduits. The nozzle has a specialized waterway geometry wherein the area of the entry aperture, the area of the exit aperture, and the cross-sectional area of the waterway at every point between the entry aperture and the exit aperture are all equal to each other. Because the cross-sectional area of the waterway remains constant, the nozzle minimizes the amount of turbulence experienced by the flowing liquid. The spray pattern produced from the nozzle shows improved distance, penetrating power, and water spray shape.