Abstract: Based on the FLUENT fluid simulation software,the design and simulation analysis of the exterior shape of the pneumatic control gliding underwater robot is carried out,and the design of the underwater robot in the flow field is more efficient.Firstly,the pneumatic control gliding underwater robot is introduced,and then th7e design and simulation analysis of the main carrier shape and the gliding airfoil is carried out on the basis of its internal structure,from which to select a relatively optimal scheme.FLUENT software simulation analysis can provide important theoretical basis for the optimization of underwater robot shape,better underwater experiments,and shortening the design cycle.

Key words: FLUENT software, pneumatic control, fluid simulation, shape optimization