Shape Optimization And Simulation Analysis Of Autonomous Underwater Vehicle (AUV)

Small autonomous underwater vehicle (AUV), because of its low cost, high speed, hidden features, gradually attracting people’s attention, plays an important role in both civilian and military aspects. Because AUV can only carry limit energy, so in order to improve energy efficiency, how it can reduce the resistance in the water movement is a very important issue. It is very important to carry out the AUV shape optimization, reducing its resistance in water to improve the energy efficiency. In this paper, a small underwater robot shape optimization for the research objectives, and explore an effective way to reduce the AUV water resistance. Around the target, the following aspects will be researched.Firstly, according to the technical specifications of the design task book and determine the AUV’s main design parameters based on the modular design, the AUV from the propulsion module, the control module, the energy moduleand user‐defined several parts of the module, and the establishment of its kinematics and dynamics equations.Secondly, the AUV mathematical model based on the shape of the AUV parametric modeling to determine the need to optimize the shape parameters, and then in the VC language environment to perform the whole process on the the AUV shape optimization,. Calculate the water resistance of this article is the use of Computational Fluid Dynamics (CFD) methods in the commercial software ANSYS CFX module to calculate the water resistance, the genetic algorithm to select the optimal set of parameters, namely the minimum parameters to meet the water resistance of the assembly volume for AUV. And then through the simulation of the hydrodynamic characteristics of the AUV optimized for AUV and optimization before simulation in order to compare the analysis to optimize the the AUV shape before and after the water resistance characteristics.Finally, in order to research AUV running resistance and mobility, to continue the overall shape of the AUV in the turbulence model, numerical simulation, a series of hydrodynamic analysis work. Three‐dimensional hydrodynamic simulation of AUV design is completed and simulation AUV viscous flow around the field. AUV surface of a variety of pressure distribution and flow field pressure and velocity distribution of a number of water dynamic characteristics, the results show that the computer simulation AUV hydrodynamic characteristics of the value of the data from these studies can provide a reference for further research and experimental analysis of the AUV.