Ship Hull Elevation for Propeller Flow Optimization
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Solution Overview
Problem
Container ships face challenges in efficient operation due to high fuel costs and environmental concerns related to energy consumption, as they transport heavy loads and generate significant greenhouse gas emissions.
Innovation Solution
A hull design with an elevation in the outer contour of the hull, specifically configured for container ships, bulk carriers, or tankers, which optimizes water flow by incorporating a unique shape with turning points and depressions to enhance the efficiency of the ship propeller's operation, reducing hydrodynamic resistances and improving fuel efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a conventional hull design is used, then the ship can transport heavy loads, but fuel consumption is high and hydrodynamic resistance is increased
Solution Approach 1:
The patent applies local quality by introducing an elevation (local structural modification) in the bottom region of the hull between the middle and stern. This localized change in hull geometry optimizes water flow characteristics in the propeller region without altering the overall hull form or cargo capacity, thereby reducing hydrodynamic resistance and fuel consumption while maintaining transport capability
Solution Approach 2:
The patent changes the geometric parameters of the hull bottom by creating an elevation with specific dimensions (extending longitudinally between body plans and vertically from the hull bottom). This parameter modification alters the water flow pattern and pressure distribution, leading to reduced wake losses and improved propeller efficiency, thus decreasing fuel consumption
2Productivity
If a conventional hull design is used, then the ship structure is simple, but hydrodynamic resistance is high and propulsion efficiency is low
Solution Approach 1:
The elevation is a localized structural feature confined to the bottom region between the middle and stern, affecting only a specific portion of the hull. This local modification improves propulsion efficiency by optimizing water flow to the propeller while adding minimal structural complexity compared to a complete hull redesign
Solution Approach 2:
The hull is effectively segmented into regions with different functional characteristics: the elevation region optimizes for hydrodynamic performance while other hull regions maintain their conventional structures for cargo capacity and structural integrity. This segmentation allows targeted optimization without comprehensive redesign
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 design results in a fuel savings of up to 10% and significant reductions in greenhouse gas emissions, contributing to environmental protection and cost savings by optimizing the use of water flow for propulsion.
Implementation Method 1
a water flow in the region of the elevation can be more efficiently utilized with respect to a drive of the ship than previous hulls
Data Source
AI summary
The present invention relates to a hull in particular for a container ship, a bulk carrier and a tanker. The hull includes an elevation of an outer contour of the hull with respect to an upwards directed vertical direction of the hull in the region of a first body plan and a second body plan in relation to a surface section immediately adjoining to the elevation. Therein, the elevation is arranged in a region between a middle and a stern of the hull.