| 摘要: |
| 跨介质航行器是一种既可以在空中飞行又可以在水下潜航的新概念航行器，基于仿生学原理，提出一种通过改变外形实现水空介质跨越的航行器模型，通过入水试验装置和计算流体动力学方法,对航行器带攻角从空气到水的介质跨越过程进行了试验和数值仿真研究，得到了跨介质入水过程航行器的运动姿态和入水空泡形态，并通过数值仿真得到了航行器的升力、阻力、速度和加速度演化规律。同时基于数值模拟方法对有波浪情况和静水情况下航行器入水过程空泡演变以及运动特性进行对比。结果表明：提出的航行器构型在水中具有较好的姿态调整能力，波浪的有无和波高的不同都会对航行体入水运动特性造成影响。 |
| 关键词: 跨介质航行器 入水 流场演变 运动特性 |
| DOI： |
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| 基金项目:国家自然科学基金（51709042）;辽宁省自然科学基金（20180550619）;中国博士后科学基金（2018M631791，2019T120211）;辽宁省“兴辽英才计划”项目资助（XLYC1908027） |
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| Study on the Flow Field Evolution and Motion Characteristics of Trans-Media Vehicle under Wave Conditions |
| SHI Chongbin,ZHANG Guiyong,SUN Tiezhi,ZONG Zhi |
| (School of Naval Architecture, Dalian University of Technology, Dalian 116024, China;School of Naval Architecture, Dalian University of Technology, Dalian 116024, China; State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian 116024, China; Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration, Shanghai 200240, China) |
| Abstract: |
| Transmedia vehicle is a new concept aircraft that can fly both in the air and underwater. Based on the principle of bionics, this paper proposes a vehicle model that can enter the water by changing its shape. Experiment and computational fluid dynamics methods are used to conduct studies on the process of the vehicle with an angle of attack from air to water. The evolution features of the lift, drag, velocity and acceleration of the vehicle is discussed. At the same time, based on the numerical simulation method, the cavitation evolution and motion characteristics of the vehicle entering the water under wave conditions and still water conditions are compared. The results show that the vehicle configuration proposed in this paper has good attitude adjustment ability in water. |
| Key words: Trans-media vehicle Water-entry Flow field evolution Motion characteristics |