水下滑翔器整体外形设计及水动力性能分析

对水下滑翔器的整体外形设计与水动力性能进行研究。在Slocum等几种典型水下滑翔器样机的基础上,对滑翔器的主体和附体进行一体化设计,得到阻力最小的新型水下滑翔器构型设计。利用CFD方法对水下滑翔器进行模拟仿真,通过分析对比五种主体构型,得到了比较合理的主体线型,然后用正交设计方法和曲线拟合法对附体进行了优选工作,最后得到了性能更优的整体载体外形。模拟仿真实验表明,滑翔器在8°左右攻角航行时,具有最大的升阻比;和Slocum等经典样机相比,新的载体具有更好的水动力性能。通过上述研究工作,也可以缩短水下滑翔器研制周期,降低设计成本,并为水下滑翔器的更优设计提供了有力的技术指导和参考。

Shape design for autonomous underwater glider based on hydraulic characteristics

The method for shape optimal design of autonomous underwater vehicles or gliders (AUV/AUG) is studied in this paper. Based on the classical AUVs, e.g. Spray, Slocum and Seaglider, etc., the integrated main body and appendix system have been designed to achieve the minimal drag force. Simulation has been done through computing fluid dynamics (CFD) for five typical design types. Based on the comparison, the main stream of the body shape has been obtained, and the appendix system designed with orthogonal method, thus the optimal structural shape has been derived. Based on the simulation results, the maximum lift to drag ratio can be obtained with the attack angle at 8 degrees; compared with classical shape designs, the obtained shape has better hydraulic performances. Through the proposed study method, the design period can also be decreased.