Numerical Simulation of Flow Field in Coaxial Gun Recoil System

Abstract

Knowing the hydraulic resistance of gun recoil brake is a major task to determine the gun recoil parameters during recoil. Generally, using one-dimensional analytical models simplify determination of the hydraulic resistance coefficient consequently the hydraulic resistance can be easily obtained. However, these models don't give information about the flow inside the recoil brake. For more explanations of the internal flow inside the recoil system, the two-dimensional flow simulation is carried out using CFD solver. Dynamic mesh technique is used with the CFD solver. A user defined function (UDF) is developed to feed the solver by the recoil velocity with time.