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首页> 外文期刊>Ocean Engineering >Kriging-based shape optimization framework for blended-wing-body underwater glider with NURBS-based parametrization
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Kriging-based shape optimization framework for blended-wing-body underwater glider with NURBS-based parametrization

机译：基于Kriging的基于Kriging-Wing-Band水下滑翔机与NURBS为基础血管型参数化的形状优化框架

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摘要

Lift-drag ratio has an important impact on the horizontal range of Blended-Wing-Body Underwater Glider (BWBUG). It is significant to increase the lift-drag ratio of BWBUG for a longer horizontal range. In this paper, a Kriging-based shape optimization framework for the BWBUG with NURBS-based parametrization is proposed to maximize the lift-drag ratio and to improve the optimization efficiency. In this framework, a shape parameterization method of BWBUG is presented based on the NLJRBS method, to precisely calculate the geometric constraints and their gradient information. The CFD method is applied to accurately compute the hydrodynamic parameters of BWBUG in the whole optimization design. A Kriging-based optimization framework is built with dynamically infilling sample points to update the Kriging model by the aid of the gradient information of geometric constraints, which further improves the optimization efficiency Finally, the effectiveness of the proposed optimization framework is verified by performing the shape optimization of a BWBUG.
机译：举起率对混合 - 翼式水下滑翔机（BWBUG）的水平范围产生了重要影响。增加BWBUG的升力比对于较长的水平范围是显着的。本文提出了一种基于BWbug的基于Kriging的形状优化框架，其基于NURBS的参数化，以最大化提升 - 阻力比并提高优化效率。在该框架中，基于NLJRB方法呈现BWBUG的形状参数化方法，精确地计算几何约束及其梯度信息。应用CFD方法以精确计算整个优化设计中BWBUG的流体动力学参数。基于Kriging的优化框架，采用动态infizing采样点，通过几何约束的梯度信息来更新克里格模型，这进一步提高了优化效率，通过执行形状来验证所提出的优化框架的有效性优化BWBUG。

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  • 来源
    《Ocean Engineering》 |2021年第1期|108212.1-108212.9|共9页
  • 作者

    Zhang Daiyu; Wang Zhidong; Ling Hongjie; Zhu Xinyao;

  • 作者单位

    Jiangsu Univ Sci & Technol Sch Naval Architecture & Ocean Engn Zhenjiang 212003 Jiangsu Peoples R China;

    Jiangsu Univ Sci & Technol Sch Naval Architecture & Ocean Engn Zhenjiang 212003 Jiangsu Peoples R China;

    Jiangsu Univ Sci & Technol Sch Naval Architecture & Ocean Engn Zhenjiang 212003 Jiangsu Peoples R China;

    Jiangsu Univ Sci & Technol Sch Naval Architecture & Ocean Engn Zhenjiang 212003 Jiangsu Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Underwater glider; Optimization design; Shape parameterization; Hydrodynamic analysis; Kriging model;

    机译：水下滑翔机;优化设计;形状参数化;流体动力学分析;Kriging模型;

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