WO2021174440A1 - Procédé et système pour le calcul d'une force des vagues reçue par un objet subaquatique immergé - Google Patents

Procédé et système pour le calcul d'une force des vagues reçue par un objet subaquatique immergé Download PDF

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Publication number
WO2021174440A1
WO2021174440A1 PCT/CN2020/077760 CN2020077760W WO2021174440A1 WO 2021174440 A1 WO2021174440 A1 WO 2021174440A1 CN 2020077760 W CN2020077760 W CN 2020077760W WO 2021174440 A1 WO2021174440 A1 WO 2021174440A1
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Prior art keywords
wave
submerged object
force
submerged
wave force
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PCT/CN2020/077760
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English (en)
Chinese (zh)
Inventor
金瑞佳
张华庆
耿宝磊
阳志文
陈汉宝
张维
马隽
熊岩
Original Assignee
交通运输部天津水运工程科学研究所
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Application filed by 交通运输部天津水运工程科学研究所 filed Critical 交通运输部天津水运工程科学研究所
Priority to PCT/CN2020/077760 priority Critical patent/WO2021174440A1/fr
Priority to CN202080004931.2A priority patent/CN112639772B/zh
Publication of WO2021174440A1 publication Critical patent/WO2021174440A1/fr

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
    • G06F17/10—Complex mathematical operations
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
    • Y02A40/81—Aquaculture, e.g. of fish

Definitions

  • the application relates to the technical field of hydrodynamic calculation of marine engineering structures, and in particular to a method and system for calculating the wave force of underwater submerged objects.
  • marine engineering structures such as horizontal pipes of jacket platforms, underwater cylindrical structures in aquaculture cages, and underwater structures in composite floating breakwaters, are subject to wave loads.
  • Related technologies are usually divided into field observation methods, physical model experiment methods and numerical calculation methods when studying the forces of underwater submerged marine engineering structures under the action of waves.
  • the underwater structure is usually scaled to a certain ratio, and the simulation experiment research carried out in the wave flume or pool, but the cost is relatively high.
  • Numerical calculation methods include empirical formulas based on Morrison's formula, numerical calculation methods based on potential flow theory, and numerical calculation methods based on viscous flow theory. Among them, calculations based on empirical formulas have large errors for underwater structures with large scales or irregular shapes; numerical calculations based on potential flow theory have large deviations when the wave heights or structural scales are large; adopt viscous flow theory The numerical calculation of, it takes a long time and the calculation efficiency is low.
  • This application aims to solve at least one of the above technical problems.
  • one purpose of this application is to propose a method for calculating the wave force of underwater submerged objects. This method can effectively improve the calculation accuracy of the wave force received, and has the advantages of short calculation time and high calculation efficiency.
  • the second purpose of this application is to propose a system for calculating the wave force of underwater submerged objects.
  • the third purpose of this application is to provide a computer-readable storage medium.
  • the first aspect of this application discloses a method for calculating the wave force of an underwater submerged object, including: obtaining size information of the submerged object and wave information of the wave; according to the size information of the submerged object, The wave information of the wave obtains the wave force force correction coefficient of the submerged object; the initial wave force of the submerged object calculated according to the size information of the submerged object and the wave information of the wave; the force correction according to the wave force of the submerged object The coefficient modifies the initial wave force received by the submerged object to obtain the final wave force received by the submerged object.
  • the calculation accuracy of the received wave force can be effectively improved, and it has the advantages of short calculation time and high calculation efficiency.
  • the size information of the submerged object includes the horizontal size and the vertical size of the submerged object
  • the wave information of the wave includes the incident wave amplitude and incident wavelength of the wave.
  • the wave force force correction coefficient of the submerged object includes the wave force correction coefficient of the submerged object in the horizontal direction and the wave force correction coefficient of the submerged object in the vertical direction, wherein,
  • the horizontal force correction coefficient of the wave force of the submerged object is:
  • the vertical force correction coefficient of the wave force of the submerged object is:
  • the A is the incident wave amplitude of the wave
  • the L is the incident wavelength of the wave
  • the D x is the horizontal dimension of the submerged object
  • the D z is the vertical dimension of the submerged object.
  • the method further includes: calculating the initial wave force received by the submerged object by a numerical calculation method based on the potential flow theory according to the size information of the submerged object and the wave information of the wave.
  • the correcting the initial wave force received by the submerged object according to the wave force force correction coefficient of the submerged object to obtain the final wave force received by the submerged object includes: submerging the submerged object.
  • the product of the wave force force correction coefficient of the object and the initial wave force received by the submerged object is used as the final wave force received by the submerged object.
  • the second aspect of the application discloses a wave force calculation system for underwater submerged objects, which includes: an acquisition module for obtaining size information of submerged objects and wave information of waves; The size information of the submerged object and the wave information of the wave are used to obtain the wave force correction coefficient of the submerged object; the calculation module is used to calculate the initial wave force received by the submerged object according to the size information of the submerged object and the wave information of the wave , And correct the initial wave force received by the submerged object according to the wave force force correction coefficient of the submerged object to obtain the final wave force received by the submerged object.
  • the calculation accuracy of the received wave force can be effectively improved, and it has the advantages of short calculation time and high calculation efficiency.
  • the size information of the submerged object includes the horizontal size and the vertical size of the submerged object
  • the wave information of the wave includes the incident wave height and incident wavelength of the wave
  • the wave force force correction coefficient of the submerged object includes the wave force correction coefficient of the submerged object in the horizontal direction and the wave force correction coefficient of the submerged object in the vertical direction, wherein,
  • the horizontal force correction coefficient of the wave force of the submerged object is:
  • the vertical force correction coefficient of the wave force of the submerged object is:
  • the A is the incident wave amplitude of the wave
  • the L is the incident wavelength of the wave
  • the D x is the horizontal dimension of the submerged object
  • the D z is the vertical dimension of the submerged object.
  • the calculation module is configured to calculate the initial wave force received by the submerged object by a numerical calculation method based on the potential flow theory according to the size information of the submerged object and the wave information of the wave.
  • the third aspect of the present application discloses a computer-readable storage medium on which is stored a wave force calculation program of an underwater submerged object, which is realized when the underwater submerged object's wave force calculation program is executed by a processor According to the method for calculating the wave force of underwater submerged objects described in the first aspect.
  • Fig. 1 is a flowchart of a method for calculating the wave force of an underwater submerged object according to an embodiment of the application
  • FIG. 2 is a schematic diagram of calculation parameters in the method for calculating the wave force of underwater submerged objects according to an embodiment of the application;
  • Figure 3 is a schematic diagram of placing a submerged square box in a water tank
  • 4a to 4b are comparison diagrams of the horizontal wave force received by the submerged square box at the submerged depth of 17.5cm using the potential flow theory, the method of the embodiment of the application, and the physical model test;
  • 4c to 4d are comparison diagrams of vertical wave forces received by the submerged square box at a submerged depth of 17.5cm using the potential flow theory, the method of the embodiment of the application, and the physical model test;
  • Figures 5a to 5b are comparison diagrams of the horizontal wave force received by the submerged square box at a submerged depth of 35.0cm using the potential flow theory, the method of the embodiment of this application, and the physical model test;
  • 5c to 5d are comparison diagrams of the vertical wave force received by the submerged square box at a submerged depth of 35.0 cm using the potential flow theory, the method of the embodiment of the application, and the physical model test;
  • Figure 6 is a schematic diagram of a cylinder submerged in water
  • Figures 7a to 7b are comparison diagrams of the horizontal and vertical wave forces received by the submerged cylinder at a submerged depth of 9.5 cm using the potential flow theory, the method of the embodiment of the application, and the physical model test;
  • Figures 7c to 7d are comparison diagrams of the horizontal and vertical wave forces received by the submerged cylinder at a submerged depth of 27.0cm using the potential flow theory, the method of the embodiment of the application, and the physical model test;
  • Fig. 8 is a structural block diagram of a system for calculating the wave force of an underwater submerged object according to an embodiment of the application.
  • Fig. 1 is a flowchart of a method for calculating the wave force of an underwater submerged object according to an embodiment of the present application. As shown in Figure 1, the method for calculating the wave force of an underwater submerged object according to an embodiment of the present application includes the following steps:
  • S101 Obtain size information of submerged objects and wave information of waves.
  • the parameters of the size information of the submerged object and the wave information of the wave are shown in FIG. 2.
  • the size information of the submerged object includes but is not limited to the horizontal size and the vertical size of the submerged object
  • the wave information of the wave includes, but is not limited to, the incident wave amplitude and incident wavelength of the wave.
  • S102 Obtain the wave force correction coefficient of the submerged object according to the size information of the submerged object and the wave information of the wave.
  • the wave force correction coefficient of the submerged object can include the wave force of the submerged object, the horizontal force correction coefficient and the wave force of the submerged object. Correction coefficient of force in the vertical direction.
  • the horizontal force correction coefficient of the wave force of the submerged object is, for example:
  • the vertical force correction coefficient of the wave force of the submerged object is, for example:
  • A is the incident wave amplitude of the wave
  • L is the incident wavelength of the wave
  • D x is the horizontal dimension of the submerged object
  • D z is the vertical dimension of the submerged object.
  • S103 The initial wave force received by the submerged object calculated according to the size information of the submerged object and the wave information of the wave.
  • the calculation of the initial wave force received by the submerged object can be obtained by a numerical calculation method based on the potential flow theory. For example, the water depth of the submerged object, the amplitude and period of the wave, etc. are detected, and then the size information of the submerged object and the wave of the wave are detected. Information, the initial wave force on the submerged object can be calculated based on the numerical calculation method of the potential flow theory.
  • S104 Correct the initial wave force received by the submerged object according to the wave force correction coefficient of the submerged object to obtain the final wave force received by the submerged object. For example: take the product of the wave force correction coefficient of the submerged object and the initial wave force received by the submerged object as the final wave force received by the submerged object.
  • the initial wave force received by the submerged object obtained by numerical calculation based on the potential flow theory can be corrected by the wave force correction coefficient of the submerged object.
  • the specific fitting formula is as follows:
  • F NDx and F NDz are the initial wave forces (ie: the wave force received in the horizontal direction and the wave force received in the vertical direction) calculated by the numerical calculation method of the potential flow theory respectively;
  • F EDx and F EDz is the wave force in the horizontal direction and the wave force in the vertical direction obtained through experimental measurements.
  • the wave force received in the horizontal direction and the wave force received in the vertical direction obtained through experimental measurements are relatively accurate, it can be used as the initial wave force received by the submerged object after the correction coefficient is corrected.
  • the final wave force comparison standard because the wave force received in the horizontal direction and the wave force received in the vertical direction obtained through experimental measurements are relatively accurate, it can be used as the initial wave force received by the submerged object after the correction coefficient is corrected. The final wave force comparison standard.
  • the square (ie: ⁇ ) is the result of the potential flow settlement
  • the diamond (ie: ⁇ ) is the test result
  • the corrected result is represented by the triangle (ie: ⁇ ).
  • FIG. 7a to FIG. 7d it can be seen from FIG. 7a to FIG. 7d that the application of the method of the embodiment of the present application can improve the calculation accuracy, and the calculation time is short, and the calculation efficiency is high.
  • the calculation accuracy of the received wave force can be effectively improved, and it has the advantages of short calculation time and high calculation efficiency.
  • Fig. 8 is a structural block diagram of a system for calculating the wave force of underwater submerged objects according to an embodiment of the present application.
  • the wave force calculation system 700 of underwater submerged objects according to an embodiment of the present application includes: an acquisition module 710, a correction coefficient determination module 720, and a calculation module 730.
  • the obtaining module 710 is used to obtain size information of submerged objects and wave information of waves.
  • the correction coefficient determination module 720 is used to obtain the wave force correction coefficient of the submerged object according to the size information of the submerged object and the wave information of the wave.
  • the calculation module 730 is used to calculate the initial wave force received by the submerged object according to the size information of the submerged object and the wave information of the wave, and to correct the initial wave force received by the submerged object according to the wave force correction coefficient of the submerged object. Get the final wave force on the submerged object.
  • the size information of the submerged object includes the horizontal size and the vertical size of the submerged object
  • the wave information of the wave includes the incident wave amplitude and the incident wavelength of the wave
  • the wave force force correction coefficient of the submerged object includes the wave force correction coefficient of the submerged object in the horizontal direction and the wave force correction coefficient of the submerged object in the vertical direction, wherein,
  • the horizontal force correction coefficient of the wave force of the submerged object is:
  • the vertical force correction coefficient of the wave force of the submerged object is:
  • the A is the incident wave amplitude of the wave
  • the L is the incident wavelength of the wave
  • the D x is the horizontal dimension of the submerged object
  • the D z is the vertical dimension of the submerged object.
  • the calculation module 730 is configured to calculate the initial wave force received by the submerged object by a numerical calculation method based on the potential flow theory according to the size information of the submerged object and the wave information of the wave.
  • the calculation accuracy of the received wave force can be effectively improved, and it has the advantages of short calculation time and high calculation efficiency.
  • the computer-readable storage medium of the embodiment of the present application has stored therein a wave force calculation program of an underwater submerged object.
  • the underwater submerged object's wave force calculation program is executed by a processor, it can be implemented as any of the foregoing in this application.
  • An embodiment of the method for calculating the wave force of underwater submerged objects is described in detail below.
  • the foregoing computer-readable storage medium may adopt any combination of one or more computer-readable media.
  • the computer-readable medium may be a computer-readable signal medium or a computer-readable storage medium.
  • the computer-readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or device, or a combination of any of the above.
  • computer-readable storage media include: electrical connections with one or more wires, portable computer disks, hard disks, random access memory (RAM), read only memory (Read Only Memory) ; Hereinafter referred to as: ROM), Erasable Programmable Read Only Memory; hereinafter referred to as: EPROM) or flash memory, optical fiber, portable compact disk read-only memory (CD-ROM), optical storage device, magnetic memory Pieces, or any suitable combination of the above.
  • the computer-readable storage medium can be any tangible medium that contains or stores a program, and the program can be used by or in combination with an instruction execution system, apparatus, or device.
  • the computer-readable signal medium may include a data signal propagated in baseband or as a part of a carrier wave, and computer-readable program code is carried therein. This propagated data signal can take many forms, including, but not limited to, electromagnetic signals, optical signals, or any suitable combination of the foregoing.
  • the computer-readable signal medium may also be any computer-readable medium other than the computer-readable storage medium.
  • the computer-readable medium may send, propagate, or transmit the program for use by or in combination with the instruction execution system, apparatus, or device .
  • the program code contained on the computer-readable medium can be transmitted by any suitable medium, including, but not limited to, wireless, wire, optical cable, RF, etc., or any suitable combination of the above.
  • the computer program code used to perform the operations of this application can be written in one or more programming languages or a combination thereof.
  • the programming languages include object-oriented programming languages—such as Java, Smalltalk, C++, and also conventional Procedural programming language-such as "C" language or similar programming language.
  • the program code can be executed entirely on the user's computer, partly on the user's computer, executed as an independent software package, partly on the user's computer and partly executed on a remote computer, or entirely executed on the remote computer or server.
  • the remote computer can be connected to the user's computer through any kind of network, including local area network (Local Area Network; hereinafter referred to as: LAN) or Wide Area Network (hereinafter referred to as: WAN), or Connect to an external computer (for example, use an Internet service provider to connect via the Internet).
  • LAN Local Area Network
  • WAN Wide Area Network
  • an external computer for example, use an Internet service provider to connect via the Internet.

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Abstract

L'invention concerne un procédé pour le calcul d'une force des vagues reçue par un objet subaquatique immergé. Le procédé consiste à : acquérir des informations de taille d'un objet immergé et des informations de vague de vagues (S101) ; obtenir un coefficient de correction de force des vagues reçue de l'objet immergé selon les informations de taille de l'objet immergé et les informations de vague des vagues (S102) ; selon les informations de taille de l'objet immergé et les informations de vague des vagues, obtenir une force des vagues initiale reçue par l'objet immergé (S103) ; et corriger, selon le coefficient de correction de force des vagues reçue de l'objet immergé, la force des vagues initiale reçue par l'objet immergé pour obtenir la force des vagues finale reçue par l'objet immergé (S104). Le procédé pour le calcul de la force des vagues reçue par un objet subaquatique immergé peut efficacement améliorer la précision de calcul d'une force des vagues reçue, et possède les avantages d'un temps de calcul court et d'une efficacité de calcul élevée. L'invention concerne en outre un système pour le calcul de la force des vagues reçue par un objet subaquatique immergé.
PCT/CN2020/077760 2020-03-04 2020-03-04 Procédé et système pour le calcul d'une force des vagues reçue par un objet subaquatique immergé WO2021174440A1 (fr)

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PCT/CN2020/077760 WO2021174440A1 (fr) 2020-03-04 2020-03-04 Procédé et système pour le calcul d'une force des vagues reçue par un objet subaquatique immergé
CN202080004931.2A CN112639772B (zh) 2020-03-04 2020-03-04 水下淹没物的波浪力受力计算方法及系统

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CN114880893A (zh) * 2021-10-08 2022-08-09 东南大学 一种基于不同波浪非线性的柔性植被运动模拟方法
CN114792075A (zh) * 2022-04-29 2022-07-26 东南大学 一种波流共同作用下的淹没柔性植被动力与消浪模拟方法

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