KR-20260063403-A - SYSTEM AND METHOD FOR DESIGNING HULL-FORM OF LOW-SPEED FULLSHIPS

KR20260063403AKR 20260063403 AKR20260063403 AKR 20260063403AKR-20260063403-A

Abstract

The method for designing a low-speed, large-sized vessel according to the present invention comprises: a step of setting a first variable corresponding to a parameter defining a simplified plate of the low-speed, large-sized vessel and a second variable corresponding to a parameter defining a lower hull surface considering the hydrodynamics of the low-speed, large-sized vessel; a step of implementing a first shape corresponding to a simplified plate of the low-speed, large-sized vessel and a second shape corresponding to a lower hull surface based on the first variable and the second variable; a step of applying the first shape to a first objective function to calculate a first objective value and applying the second shape to a second objective function to calculate a second objective value; a step of analyzing the first objective value and the second objective value calculated by applying an optimization algorithm; and an optimization step of deriving the first variable and the second variable from which the optimal values of the first objective value and the second objective value are calculated.

Inventors

차명찬
김관훈

Assignees

에이치디현대중공업 주식회사
에이치디현대삼호 주식회사

Dates

Publication Date: 20260507
Application Date: 20241030

Claims (14)

A step of setting a first variable corresponding to a parameter defining a simplified plate of a low-speed, large-sized vessel and a second variable corresponding to a parameter defining a lower hull surface considering the hydrodynamics of the low-speed, large-sized vessel; A step of implementing a first shape corresponding to a simplified plate of the low-speed large-scale vessel and a second shape corresponding to the lower hull surface based on the first and second variables; A step of applying the first shape to a first objective function to calculate a first objective value, and applying the second shape to a second objective function to calculate a second objective value; A step of analyzing the first objective value and the second objective value calculated by applying an optimization algorithm; and An optimization step for deriving the first variable and the second variable, wherein the optimal values of the first objective value and the second objective value are calculated Low-speed, large-scale vessel design method.
In Article 1, The step of setting the first variable above A step of setting a function that determines the vertical line shape of the above-mentioned simplified plate; Step of setting a function that determines the upper line shape of the above-mentioned simplified plate; and A step comprising setting a function that determines the lower line shape of the simplified plate above. Low-speed, large-scale vessel design method.
In Paragraph 2, The step of setting the second variable mentioned above A step of setting a function that determines the stem profile shape of the lower hull surface; Step of establishing a function that determines the flat bottom shape of the lower hull surface; and The step of setting a function that determines the flat side shape of the lower hull surface described above Low-speed, large-scale vessel design method.
In Paragraph 3, The step of implementing a first shape corresponding to a simplified plate of the low-speed large-scale line based on the first and second variables is A step comprising combining a function determining a flat side shape among the first variable and the second variable to form a first shape corresponding to the simplified plate. Low-speed, large-scale vessel design method.
In Paragraph 4, The step of implementing a second shape corresponding to the lower hull surface based on the first and second variables is A step comprising combining a function determining the lower line shape among the second variable and the first variable to form a second shape corresponding to the lower hull surface. Low-speed, large-scale vessel design method.
In Paragraph 5, The step of applying the first shape to the first objective function to calculate a first objective value and applying the second shape to the second objective function to calculate a second objective value A step of calculating the area of the simplified plate of the above low-speed large-scale line as the first objective value; and A step comprising calculating the ship fuel efficiency performance of the above low-speed large vessel as the above second objective value Low-speed, large-scale vessel design method.
In Paragraph 6, The optimization step for deriving the first variable and the second variable, wherein the optimal values of the first objective value and the second objective value are calculated A step of deriving the first variable and the second variable such that the first objective value is maximized and the second objective value is minimized. Low-speed, large-scale vessel design method.
A variable setting unit for setting a first variable corresponding to a parameter defining a simplified plate of a low-speed, large-sized vessel and a second variable corresponding to a parameter defining a lower hull surface considering the fluid dynamics of the container; A shape implementation unit that implements a first shape corresponding to a simplified plate of the low-speed large-scale vessel and a second shape corresponding to the lower hull surface based on the first and second variables; A shape evaluation unit that applies the above-mentioned first shape to a first objective function to calculate a first objective value and applies the above-mentioned second shape to a second objective function to calculate a second objective value; and An optimal shape implementation unit that derives the first variable and the second variable, wherein the optimal values of the first objective value and the second objective value are calculated by applying an optimization algorithm. Low-speed, large-scale vessel design system.
In paragraph 8, The above variable setting part A function is established to determine the vertical line shape of the above-mentioned simplified plate, and A function is established to determine the upper line shape of the above simplified plate, and Characterized by setting the first variable by setting a function that determines the lower line shape of the simplified plate. Low-speed, large-scale vessel design system.
In Paragraph 9, The above variable setting part A function is set to determine the stem profile shape of the lower hull surface, and A function is established to determine the flat bottom shape of the lower hull surface, and Characterized by setting the second variable by setting a function that determines the flat side shape of the lower hull surface. Low-speed, large-scale vessel design system.
In Paragraph 10, The above shape implementation part Characterized by configuring a first shape corresponding to the simplified plate by combining a function that determines a flat side shape among the first variable and the second variable. Low-speed, large-scale vessel design system.
In Paragraph 11, The above shape implementation part Characterized by combining the above-mentioned second variable and a function determining the lower line shape among the above-mentioned first variable to form a second shape corresponding to the lower hull surface. Low-speed, large-scale vessel design system.
In Paragraph 12, The above shape evaluation unit The area of the simplified plate of the above low-speed large-scale line is calculated as the first objective value, and Characterized by calculating the ship fuel efficiency performance of the above low-speed large vessel as the above second objective value. Low-speed, large-scale vessel design system.
In Paragraph 13, The above optimal shape implementation part Characterized by deriving the first variable and the second variable such that the first objective value is maximized and the second objective value is minimized. Low-speed, large-scale vessel design system.

Description

System and Method for Designing Hull-Form of Low-Speed Fullships The present embodiments relate to a low-speed, large-sized ship design system and method, and more specifically, to a low-speed, large-sized ship design system and method that designs and optimizes the ship shape by distinguishing between sections where the ship shape can be simplified and sections where fluid dynamics are important. A low-speed, large-capacity vessel is a ship enlarged to sail at a low, economical speed in order to lower cargo transportation costs. Conventionally, when designing the hull shape (external profile) of low-speed, large-sized vessels using design programs, the design was carried out solely from the perspective of optimizing hydrodynamic performance to improve the ship's fuel efficiency. Conventionally, while optimizing fuel efficiency requires a hull shape optimized for both the design draft and the light draft, the design speed (contract speed) is generally determined based on the speed at the design draft; therefore, hull shape optimization has mostly been carried out to match the design draft. According to such conventional technology, if the shape of the hull is modified with the sole priority of fuel efficiency, the curved section of the hull increases, which leads to problems such as reduced production efficiency in ship block manufacturing or increased ship construction costs. FIG. 1 is a block diagram showing a low-speed, large-scale design system according to embodiments. FIG. 2 is a flowchart illustrating a low-speed, large-scale ship design method according to embodiments. FIG. 3 is a table for explaining the principles of a low-speed large-scale design system or a low-speed large-scale design method according to embodiments. FIG. 4 shows a perspective view illustrating the first and second shapes of the low-speed hypertrophy line according to the embodiments. Hereinafter, embodiments disclosed in this specification will be described in detail with reference to the attached drawings. Identical or similar components regardless of drawing symbols are assigned the same reference number, and redundant descriptions thereof will be omitted. The suffixes "module" and "part" used for components in the following description are assigned or used interchangeably solely for the ease of drafting the specification and do not inherently possess distinct meanings or roles. Furthermore, in describing the embodiments disclosed in this specification, if it is determined that a detailed description of related prior art could obscure the essence of the embodiments disclosed in this specification, such detailed description will be omitted. Additionally, the attached drawings are intended only to facilitate understanding of the embodiments disclosed in this specification; the technical concept disclosed in this specification is not limited by the attached drawings, and it should be understood that they include all modifications, equivalents, and substitutions that fall within the spirit and technical scope of the invention. The following embodiments of the present invention are intended merely to embody the invention and do not limit or restrict the scope of the rights thereof. Anything that can be easily inferred by a person skilled in the art from the detailed description and embodiments of the present invention is interpreted as falling within the scope of the rights thereof. The foregoing detailed description should not be interpreted restrictively in all respects and should be considered exemplary. The scope of the invention should be determined by a reasonable interpretation of the appended claims, and all modifications within the equivalent scope of the invention are included within the scope of the invention. FIG. 1 is a block diagram showing a low-speed, large-scale design system according to embodiments. Referring to FIG. 1, a low-speed large-scale design system (1000) according to embodiments may include a variable setting unit (100), a shape implementation unit (200), a shape evaluation unit (300), and an optimal shape implementation unit (400). The variable setting unit (100) can set a first variable corresponding to a parameter that defines a section that can be simplified in the shape of a low-speed, large-sized ship as a simplified plate, and a second variable corresponding to a parameter that defines a section that considers hydrodynamics in the shape of a low-speed, large-sized ship as a lower hull surface. That is, the variable setting unit (100) can set a parameter that can define or configure a simplified plate of a low-speed, large-sized vessel as a first variable, and the factor constituting the first variable may be at least one. Likewise, the variable setting unit (100) can set a parameter that can define or configure a lower hull surface that considers the hydrodynamics of a low-speed, large-sized vessel as a second variable, and the factor constituting the second variable may be at least one. The va