【作者】 杨琴；

【导师】 张志国；

【作者基本信息】 华中科技大学 ， 船舶与海洋工程， 2013， 硕士

【摘要】 采用数值模拟方法分析和研究潜艇的绕流场一直是计算流体力学领域的一个经典问题。本文采用基于CFD的方法对DTMB Non-BOR双尾双桨潜艇进行了阻力和自航性能分析。舰船，尤其是多桨舰船，其自航评估和研究是通常是由拖曳水池自航试验实现，实施周期长，耗资大。采用流体动力数值仿真分析技术，能够系统分析和研究各种水下航行器的航行性能，指导水下航行器设计，提出优化设计方案和改进航行性能的措施。本文首先利用数值方法分析和研究了INSEANE1619型螺旋桨的敞水特性和SUBOFF潜艇的阻力特性，掌握了进行螺旋桨和潜艇水动力特性数值分析的建模方法和求解技术，并将数值分析研究结果和试验数据进行了对比，两者吻合良好。在此基础上，以带INSEANE1619型七叶螺旋桨的全附体SUBOFF主艇体模型为研究对象，基于RANS方程，采用RNG k-ε两方程湍流模型，对带桨SUBOFF主艇体模型的艇+桨耦合的三维流场进行了数值模拟。对在给定航速下，建立了潜艇阻力和螺旋桨推力之间的耦合，通过变换螺旋桨转速得到潜艇在一定航速下的阻力和推力动态平衡的自航点。实现了水下航行器+螺旋桨三维流场的数值计算和全附体Suboff模型+螺旋桨的自航仿真分析和研究，。本文基于以上研究，采用上述数值计算方法求解DTMB Non-BOR潜艇+螺旋桨相互作用的三维流场。对Non-BOR潜艇的水动力航行性能进行了分析和研究，仿真分析结果清晰、形象地描述了DTMB Non-BOR潜艇与常规潜艇快速性能的区别和特性。更多还原

【Abstract】 The flow around an underwater vehicle is classical problem in CFD fields.Self-propulsion test of submarine is the key technique of prediction and evaluation aboutits performance. So using the effective means to forecast the resistance of submarine,location of self-propulsion and analysis of its hydrodynamic characteristics has become afocus with difficulty for Navy’s research. This paper mainly studies the three dimensionviscous flow over Non-BOR submarine with propeller INSEANE1619.Three-dimensional numerical simulations were conducted to observe the flowpatterns and to measure the thrust and torque coefficient of propeller. Furthermore, basedon the analysis of the flow characteristics of SUBOFF bare hull and appended SUBOFFwith highly-skewed propeller INSEANE1619, the research of this system underself-propulsion condition is put forward. Propeller thrust and submarine body resistanceare both the function of propeller rotating rate while the inflow velocity is fixed.Consequently, through altering the propeller rotating rate, self-propulsion point can belocated under a certain inflow velocity. The simulation result with RANS equations andRNG k-ε two-equation turbulence model presents the verification the feasibility of thisaccess of understanding the powering performance of submarine with7-bladedhighly-skewed propeller. Based on the above mentioned work, the author adopts thisnumerical implementation method to simulate the powering performance of Non-BORsubmarine with propeller INSEANE1619. The result not only provided people with theaccess of understanding the flow the flow pattern of full appendage Non-BOR submarinewith propeller INSEANE1619, but also was made to determine the methods which couldbe adopted to improve the performance of the propeller. Furthermore, the results of theanalysis can be used in the design of low noise and high efficiency propeller.更多还原