Efficiency Calculation of a Bore Evacuator Based on FLUENT Simulation
The reliablity of gun evacuator directly affects the gunner′s working environment and per-sonal safety.In order to study the evacuator reliability of a 105 mm gun evacuator,a CFD method was proposed to calculate the venting efficiency of the gun evacuator.This paper adopted Fluent software with the standard k-ε turbulence model.The venting process of the three-dimensional evacuator consi-dering breech opening process was simulated.The pressure of the air storage chamber,the pumping speed and the pumping mass flow rate of the bore evacuator were monitored.The results show that con-tours can better display the jet development process of the venting process of the evacuator.The pres-sure curves of the air storage chamber obtained both from the simulation and the experiment are basi-cally the same during the venting process of the gas storage chamber.The simulation results conform to actual physical laws,which also illustrates the feasibility of the simulation model.The simulation result shows that the pumping efficiency meets design requirements and the gun evacuator is reliable.The simu-lation method can serve as a reference for the optimization design of bore evacuators and gun design.
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