| Recoil mechanism is an important part of gun recoil mechanism, it produces a certain law of resistance for consuming the recoil energy and limiting the recoil movement within the given rule during firing process, which can control the recoil movement. The main purpose of this paper is the study of gun recoil mechanism of turbulent flow velocity field movement and the temperance of the wear ring. This paper mainly consists of following parts:1.Based on the computational fluid mechanics, establishment of two dimensional model of recoil mechanism, simplifying the control rod size and speed regulating cylinder structure. Mesh partition block, in recoil mechanism of complex structure local using unstructured grid, the rest using the structured grid, it is convenient for numerical simulation.2.Established two models of diameter type recoil and variable diameter control rod type recoil, numerical simulation analysis of two models of internal flow field of recoil movement. According to the recoil mechanism in gun recoil experiment data compiling Profile file, using dynamic grid driving motion boundary motion, using computational fluid dynamics software FLUENT for numerical simulation. Calculation of brake hydraulic resistance coefficient.3.Using multi phase flow model of equal diameter control rod type recoil internal flow field of the study of cavitation phenomenon, get the recoil flow speed, pressure, flow chart and so on. Through data analysis, according to the recoil velocity distribution diagram can see the jet of recoil fluid in non working chamber, calculation of brake hydraulic resistance coefficient.4.Because the high speed jet of recoil mechanism and the cavitation of liquid flow cavitation cause the throttling ring wear, preliminary analysis of the throttling ring surface wear mechanism, some upholstery to the rear of the further research for throttling ring wear. |
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