Analysis of shock-wave loads on a missile, launcher and container during launches

This article presents the results of numerical simulations using software complex ANSYS FLUENT shock-wave loads on the missile, launch container and silo launcher during the opening of the container under missile space when the missile leaves the bottom edge of the launch container. On the basis of test calculations was chosen combination schemes, allowing obtaining fast enough stable convergent solution. In the article issued recommendations to build grid model, choosing a method of rebuilding the grid, setting the physical model of gas, including turbulence models, the choice of sampling scheme in space. To reduce the time-consuming and computing resources used two-dimensional hexahedral mesh, symmetrical about the axis of the missile, built tools grid generator ANSYS ICEM CFD. Using this type of grid, allowed to build it in accordance with the spread of the shock front. The article notes that various approaches to solving problems with moving boundaries, namely, the use of dynamic and sliding grids. The law of motion is determined by a special custom function Motion UDF / Profile. This function is written in the language C++ and compiled into a binary file. Calculations of shock-wave on the given research algorithm revealed a number of features in the launch container loading associated with the propagation of vacuum-compression waves in channels launcher. An assessment of the influence parameters of combustion products powder pressure accumulator on the distribution and magnitude of shock waves in channels launcher and missiles in the vicinity not only qualitatively but also quantitatively.