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人机交互智能骑行头盔设计

无线互联科技 2024年第5期21卷 39-41页

作者：胡文霞何宇丁小荣段文洋安徽三联学院电子电气工程学院安徽合肥230601

文章设计了一款人机交互智能安全头盔。该头盔主要由高性能BXC6332A芯片设计的蓝牙板块、语音控制模块、BDS/GPS双定位和MEMS压力传感器构成,实现骑行人员的安全监测和事故救援。该设计可实现利用语音来控制转向指示灯,使用压力传感器... 详细信息

文章设计了一款人机交互智能安全头盔。该头盔主要由高性能BXC6332A芯片设计的蓝牙板块、语音控制模块、BDS/GPS双定位和MEMS压力传感器构成,实现骑行人员的安全监测和事故救援。该设计可实现利用语音来控制转向指示灯,使用压力传感器检测自行车事故,并实时收集定位和生命体征数据,然后与警报信息一并发送到云端。救援队伍可以追踪骑行者的位置和健康状态,以便在发生意外时迅速响应,确保及时救援,增强骑行安全。

关键词： BXC6332A芯片 BDS/GPS双定位 MEMS压力传感器

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两层及三层流体间内波理论研究进展

国防科技大学学报 2023年第4期45卷 124-135页

作者：赵彬彬张天钰杜辉段文洋王战哈尔滨工程大学船舶工程学院黑龙江哈尔滨150001 国防科技大学气象海洋学院湖南长沙410005 哈尔滨工程大学青岛哈尔滨工程大学创新发展中心山东青岛266000

内波作为一种发生在层化海洋内部的波动,在世界海洋范围内普遍存在。深入研究内波生成、演化等特性,对我国的海洋开发有着重要意义。针对两层及三层流体间内波理论,选取目前国内外广泛应用的KdV (Korteweg-de Vries)内波理论、MCC (Miya... 详细信息

内波作为一种发生在层化海洋内部的波动,在世界海洋范围内普遍存在。深入研究内波生成、演化等特性,对我国的海洋开发有着重要意义。针对两层及三层流体间内波理论,选取目前国内外广泛应用的KdV (Korteweg-de Vries)内波理论、MCC (Miyata-Choi-Camassa)内波理论、层析内波理论以及DJL (Dubreil-Jacotin-Long)内波理论综述其研究进展。从数学模型、理论研究以及数值模拟等方面,讨论了不同内波理论的优势以及局限性。从数学推导的角度,证明了MCC内波理论与第一级别层析内波理论是一致的。

关键词：内波 KdV内波理论 MCC内波理论层析内波理论 DJL内波理论两层流体三层流体

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格子玻尔兹曼正则化碰撞模型的理论进展

空气动力学学报 2022年第3期40卷 46-64,I0001页

作者：李旭晖单肖文段文洋哈尔滨工程大学船舶工程学院哈尔滨150001 南方科技大学力学与航空航天工程系深圳518055

数值稳定性问题一直是困扰格子玻尔兹曼方法在高雷诺数高马赫数流动中广泛应用的瓶颈。在格子玻尔兹曼方法领域改良碰撞模型的数值稳定性和精度一直是近30年来的研究难点和热点。正则化碰撞模型作为众多碰撞模型的一个重要分支,近几年... 详细信息

数值稳定性问题一直是困扰格子玻尔兹曼方法在高雷诺数高马赫数流动中广泛应用的瓶颈。在格子玻尔兹曼方法领域改良碰撞模型的数值稳定性和精度一直是近30年来的研究难点和热点。正则化碰撞模型作为众多碰撞模型的一个重要分支,近几年来取得了重要理论进展,目前已在高雷诺数湍流模拟、高马赫数可压缩流动以及气动声学领域得到了广泛应用。本文系统地回顾了正则化碰撞模型的发展历史,并建立了一个系统的理论框架阐述不同正则化碰撞模型之间的理论联系。同时,揭示了正则化多松弛碰撞模型的理论本质,就是在与坐标无关且自相似的矩空间中将离散格子模型表达不了的高阶动理学矩进行快速松弛,以避免虚假模态对水动力学方程的影响。

关键词：格子玻尔兹曼方法正则化碰撞模型数值稳定性虚假模态

在不同吃水与水深比条件下活塞式主动消波装置水动力学性能解析与数值研究

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哈尔滨工程大学学报（英文版） 2023年第3期22卷 435-444页

作者：覃鑫朕王经博段文洋 College of Shipbuilding Engineering Harbin Engineering UniversityHarbin 150001China

For active wave absorbers in force-control mode,the optimal feedback(control)force provided by the control system depends on the hydrodynamic *** work investigates a piston-type wave absorber with different draft-to-water depth ratios,focusing on the frequency-dependent hydrodynamic coefficients,wave absorption efficiency,wave absorber displacement and velocity,and control *** results were derived based on potential flow theory,confirming that regular incident waves can be fully absorbed by the piston-type active wave absorber at any draft ratio by optimizing the control *** results for the wave tank with a typical water depth of 3 m were studied in *** draft ratio has a strong influence on the hydrodynamic *** the maximum wave absorption efficiency,the displacement and velocity amplitudes are sensitive to the draft ratio in the low-frequency region,increase with decreasing draft ratio,and are independent of the mass of the wave *** control force required can be extremely large for a draft ratio greater than 1/*** control force increases significantly as the draft ratio *** mass of the wave absorber has a weak influence on the control force.A time-domain numerical method based on the boundary element method was developed to verify the analytical *** agreements between the analytical solutions and the numerical results were obtained.

关键词： Boundary element method Piston-type wave absorber Hydrodynamic coefficients Transfer function Wave absorption efficiency

在不同吃水与水深比条件下活塞式主动消波装置水动力学性能解析与数值研究（英文）

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Journal of Marine Science and Application 2023年第3期 435-444页

作者：覃鑫朕王经博段文洋 College of Shipbuilding Engineering Harbin Engineering University

For active wave absorbers in force-control mode, the optimal feedback(control) force provided by the control system depends on the hydrodynamic forces. This work investigates a piston-type wave absorber with different draft-to-water depth ratios, focusing on the frequencydependent hydrodynamic coefficients, wave absorption efficiency, wave absorber displacement and velocity, and control force. Analytical results were derived based on potential flow theory, confirming that regular incident waves can be fully absorbed by the piston-type active wave absorber at any draft ratio by optimizing the control force. The results for the wave tank with a typical water depth of 3 m were studied in detail. The draft ratio has a strong influence on the hydrodynamic coefficients. At the maximum wave absorption efficiency, the displacement and velocity amplitudes are sensitive to the draft ratio in the low-frequency region, increase with decreasing draft ratio, and are independent of the mass of the wave absorber. The control force required can be extremely large for a draft ratio greater than 1/3. The control force increases significantly as the draft ratio increases. The mass of the wave absorber has a weak influence on the control force. A time-domain numerical method based on the boundary element method was developed to verify the analytical solutions. Perfect agreements between the analytical solutions and the numerical results were obtained.

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基于人工神经网络的自航浮标测波方法可行性

上海交通大学学报 2022年第4期56卷 498-505页

作者：秦艺超黄礼敏王骁马学文段文洋郝伟哈尔滨工程大学船舶工程学院哈尔滨150001 海军大连舰艇学院航海系辽宁大连116018

海洋波浪会对船舶营运和安全产生不利影响,实时准确的随船海浪监测对绿色智能船舶及航行安全至关重要.利用船舶运动反演遭遇海浪信息是一种重要的随船海浪监测手段,具有成本低、时空分辨率高等诸多优点,受到广泛关注.针对现有船舶运动... 详细信息

海洋波浪会对船舶营运和安全产生不利影响,实时准确的随船海浪监测对绿色智能船舶及航行安全至关重要.利用船舶运动反演遭遇海浪信息是一种重要的随船海浪监测手段,具有成本低、时空分辨率高等诸多优点,受到广泛关注.针对现有船舶运动反演海浪模型存在的不足,提出了一种基于人工神经网络(Artificial Neural Network, ANN)的反演模型.以船舶摇荡运动时历作为输入,以波浪时历作为输出,利用人工神经网络进行船舶运动特征提取,输入线性函数进行波面时历反演.为验证反演模型的可行性和精度,开展了船模水池试验.结果表明,提出的基于人工神经网络的测波方法能够很好地实现规则波和不规则波浪时历反演,规则波反演统计误差大多小于10%,不规则波反演误差在10%左右.提出的方法为船舶运动反演海浪时域信息提供了一种有效可行的手段.

关键词：波浪反演人工神经网络自航波浪浮标水池试验

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液舱横荡非结构网格高阶格式数值模拟

计算物理 2011年第4期28卷 507-514页

作者：明平剑段文洋哈尔滨工程大学动力与能源工程学院黑龙江哈尔滨150001 哈尔滨工程大学船舶工程学院黑龙江哈尔滨150001

提出一种液舱横荡数值模拟的方法,将气液两相交界面视为物理间断,通过高阶精度离散格式捕捉间断.根据NVD(Normalized Variable Diagram)实现非结构化网格上高精度离散格式,建立固定网格上自由表面运动模拟方法.在开发的非结构网格有限... 详细信息

提出一种液舱横荡数值模拟的方法,将气液两相交界面视为物理间断,通过高阶精度离散格式捕捉间断.根据NVD(Normalized Variable Diagram)实现非结构化网格上高精度离散格式,建立固定网格上自由表面运动模拟方法.在开发的非结构网格有限体积法求解器GTEA(General Transport Equation Analyzer)基础上,实现上述方法.首先对经典的溃坝过程进行模拟,并与文献结果对比验证方法和程序的可信度.对二维矩形液舱在不同激振频率时的横荡进行数值计算,并与实验以及商业软件CFX计算结果进行比较.结果表明方法和软件可以模拟自由面的翻卷、破碎运动现象,对距自由面较深点处流体载荷的计算结果与实验值符合较好,与商业软件CFX相比,在相同计算网格下,算法可以更好的计算次峰值,验证方法正确可行.

关键词：晃荡数值模拟非结构网格 VOF

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强非线性规则波中内倾船的甲板上浪数值研究

哈尔滨工程大学学报（英文版） 2023年第1期22卷 102-114页

作者：孙柏康赵彬彬徐杨马山段文洋 College of Shipbuilding Engineering Harbin Engineering UniversityHarbin 150001China School of Ocean Engineering and Technology Sun Yat-sen UniversityZhuhai 519082China

Owing to the large amplitude and nonlinearity of extreme sea waves,sailing ships exhibit obvious large-amplitude motion and green *** a tumblehome vessel,a low-tumblehome freeboard and wave-piercing bow make green water more *** study the green water of a wave-facing sailing tumblehome vessel in strong nonlinear regular waves,the computational fluid dynamics software STAR-CCM+was *** Reynolds-averaged Navier–Stokes method was used for the numerical simulation,and the k-epsilon model was adopted to deal with viscous *** volume of the fluid method was used to capture the free surface,and overset grids were utilized to simulate the large-amplitude ship *** study delves into the influence of wave height on the ship motion response and a tumblehome vessel green water under a large wave steepness(0.033≤H/λ≤0.067)at Fr=*** addition,the dynamic process of green water and the“wave run-up”phenomenon were *** results suggest that when the wavelength is equal to the ship length and the wave steepness increases to 0.056,the increase in the water height on the deck is ***,the wave height had little effect on the green water *** wave steepness and“backwater”have a great impact on the value and number of the peak of the water height on the *** the wave steepness exceeded 0.056,the water climbed up,and the plunging-type water body was formed at the top of the wave baffle,resulting in a large water area on the deck.

关键词： Tumblehome vessel Green water Impact loads Wave run-up Strong nonlinear regular waves

强非线性规则波中内倾船的甲板上浪数值研究（英文）

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Journal of Marine Science and Application 2023年第1期 102-114页

作者：孙柏康赵彬彬徐杨马山段文洋 College of Shipbuilding Engineering Harbin Engineering University School of Ocean Engineering and Technology Sun Yat-sen University

Owing to the large amplitude and nonlinearity of extreme sea waves, sailing ships exhibit obvious large-amplitude motion and green water. For a tumblehome vessel, a low-tumblehome freeboard and wave-piercing bow make green water more likely. To study the green water of a wave-facing sailing tumblehome vessel in strong nonlinear regular waves, the computational fluid dynamics software STAR-CCM+ was used. The Reynolds-averaged Navier–Stokes method was used for the numerical simulation, and the k-epsilon model was adopted to deal with viscous turbulence. The volume of the fluid method was used to capture the free surface, and overset grids were utilized to simulate the large-amplitude ship motion. This study delves into the influence of wave height on the ship motion response and a tumblehome vessel green water under a large wave steepness(0.033 ≤ H/λ ≤ 0.067) at Fr = 0.22. In addition, the dynamic process of green water and the “wave run-up” phenomenon were evaluated. The results suggest that when the wavelength is equal to the ship length and the wave steepness increases to 0.056, the increase in the water height on the deck is obvious. However, the wave height had little effect on the green water duration. The wave steepness and “backwater” have a great impact on the value and number of the peak of the water height on the deck. When the wave steepness exceeded 0.056, the water climbed up,and the plunging-type water body was formed at the top of the wave baffle, resulting in a large water area on the deck.

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