Study on Hydrodynamics of Underwater Operation Device in Direct Navigation State
In order to study the effect of different Reynolds number on the hydrodynamic characteristics of underwater equipment,RANS governing equation and RNG k-ε turbulence model are used to simulate the underwater equipment.Firstly,the numerical simulation of SUBOFF submarine is carried out,and the validity and reliability of the numerical simulation are verified by comparing with the experimental values.The effects of different Reynolds number on the surface pressure,vorticity and turbulent kinetic energy under direct navigation are studied.The numerical simulation results show that with the increase of Reynolds number,the surface pressure of the underwater operating device at the oncoming flow increases,and the vorticity and turbulent kinetic energy of the robot arm increase.The research results can provide reference for the stability optimization of underwater operating equipment.