The invention relates to a navigation body motion calculation method under continuous change of seawater density, which comprises the following mutually combined parts: a navigation body motion calculation module which carries out numerical wave generation by adopting an internal solitary wave theory based on an RANS method and realizes free motion calculation of an underwater navigation body under the action of an internal solitary wave in combination with a model motion control equation; and the intervention module acts on the navigation body motion calculation module, intervenes the navigation body motion calculation module, and obtains more accurate motion characteristics of the underwater navigation body under the action of the internal waves when the underwater navigation body passes through the wave surface. According to the method, the motion calculation of the underwater navigation body under the action of the internal solitary waves is carried out by combining a navigation body motion calculation module and an intervention module, and the core of the method is the intervention module. By starting the intervention module, errors caused by the fact that a density spring layer is artificially assumed to be two layers of fluid in numerical calculation are greatly reduced, and motion calculation of the underwater navigation body under the action of the solitary waves is more consistent with the actual situation.

    本发明涉及一种海水密度连续变化下的航行体运动计算方法,包括相互结合的:航行体运动计算模块,其基于RANS方法,采用内孤立波理论开展数值造波,结合模型运动控制方程实现内孤立波作用下的水下航行体自由运动计算;干预模块,其作用于航行体运动计算模块上,对航行体运动计算模块进行干预,在水下航行体穿越波面时,获得更加准确的内波作用下水下航行体运动特征。本发明将航行体运动计算模块与干预模块相结合的方法来进行内孤立波作用下水下航行体运动计算,本发明的核心是干预模块。通过干预模块的启动,大大减小数值计算中由于人为假定密度跃层为两层流体造成的误差,使得孤立波作用下水下航行体运动计算与实际情况更加相符。


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    Title :

    Method for calculating motion of navigation body under continuous change of seawater density


    Additional title:

    一种海水密度连续变化下的航行体运动计算方法


    Contributors:
    HUANG MIAOMIAO (author) / ZHANG NAN (author)

    Publication date :

    2024-04-12


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    G06F ELECTRIC DIGITAL DATA PROCESSING , Elektrische digitale Datenverarbeitung / B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS



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