Enhanced Angled-Entry Boundary Layer Testing for Air Lubrication
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Solution Overview
Problem
Current methods for testing the efficiency of air lubrication systems on angulated surfaces of marine vessels are inadequate, as they lack the ability to simulate and forecast theoretical efficiency improvements without installing the system, leading to inefficient and costly real-world trials.
Innovation Solution
A boundary layer testing system with an enhanced angulated entry region that includes a closed loop configuration with modules for delivering fully developed water flow and gas injection, allowing for real-time testing of air lubrication systems on angulated surfaces, using interchangeable nozzles and sensors to collect and analyze performance data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If air lubrication systems are installed on angulated surfaces of marine vessels, then fuel efficiency may be improved, but the cost and complexity of installation and testing increases
Solution Approach 1:
The patent creates a scaled-down physical model of the ship hull with angulated surfaces in a controlled testing environment. This model allows researchers to replicate and study the hydrodynamic effects of air lubrication systems without installing them on the actual vessel, thereby reducing installation complexity and cost while still obtaining meaningful data on fuel efficiency improvements.
Solution Approach 2:
The patent introduces a controlled water tunnel or flume as an intermediary testing facility between theoretical calculations and full-scale ship trials. This intermediate environment provides a controlled setting where air lubrication systems can be tested on scaled models, allowing for optimization of system design and configuration before actual installation on marine vessels.
2Measurement precision
If air lubrication systems are tested on actual ships, then real-world performance data is obtained, but maintenance requirements increase and empirical benefits are uncertain
Solution Approach 1:
By creating physical models of the hull forms in a controlled testing environment, researchers can obtain precise measurement data on the hydrodynamic performance of air lubrication systems without exposing the actual systems to the harsh marine environment. This allows for thorough performance characterization and optimization before installation on real ships, reducing the need for maintenance and adjustment at sea.
3Reliability
If comprehensive testing of air lubrication systems is conducted, then theoretical efficiency improvements are validated, but time and resources for testing increase
Solution Approach 1:
The patent employs scaled-down physical models that can be quickly manufactured and tested in controlled environments. This allows for rapid iteration and validation of different hull forms and air lubrication configurations without the time-consuming process of installing and decommissioning systems on actual ships. The models enable comprehensive testing of theoretical efficiency improvements in a fraction of the time required for full-scale trials.
Solution Approach 2:
The patent allows for preliminary testing and optimization of air lubrication systems on scaled models before actual installation on ships. This preliminary action enables thorough validation of theoretical efficiency improvements and optimization of system parameters in advance, reducing the need for extensive testing and adjustment after installation on real vessels.
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
Enables accurate, real-time testing of air lubrication systems on angulated surfaces, providing empirical data to confirm or challenge theoretical efficiencies, reducing fuel consumption and maintenance costs by optimizing ship hull designs.
Implementation Method 1
a boundary layer testing system with enhanced entry region for angulated surfaces
Implementation Method 2
The means of providing the layer of gas into the flow of water of the boundary layer test system converts it to a multi-phase flow of gas and water
Implementation Method 3
the theory of use of air under a marine craft to provide a low frictional surface that reduces drag on the hull of the marine craft
Data Source
AI summary
The invention provides a solution for inadequate boundary layer testing methods. The invention includes a uniquely configured multi-module concentric loop cycling water past a testing module to obtain real-time values and variables to use in CFD calculations. The invention is comprised of various sections, specifically designed to support the entire system. The system includes: one or more water reservoirs/degassing tanks, high-capacity water pumps, water stream straightener(s), angulated entrance region including stable flow section, air induction ports, viewing ports, test modules containing test surfaces designed to measure friction and pressure of a passing water or air/water stream. The present invention includes one or more sensors on the test surface(s) that convey conditions to one or more computers that may receive, store, process and send interpretations to one or more visual monitors on or near the invention in real time.