Numerical modelling of physical processes in a ballistic laboratory setup with a tapered adapter and plastic piston used for obtaining high muzzle velocities

16th Russian Youth Conference on Physics and Astronomy

物理学;天文学

Bykov, N.V.^1

Bauman Moscow State Technical University, Dorodnicyn Computing Centre of RAS, Russia^1

关键词: Calculation results;    Laboratory set-up;    Mass coordinates;    Muzzle velocity;    Numerical solution;    Physical process;    Quasi-one dimensional;    Specific equations;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/572/1/012055/pdf
DOI  :  10.1088/1742-6596/572/1/012055

学科分类：天文学(综合)

来源: IOP

【 摘 要 】

Numerical modelling of a ballistic setup with a tapered adapter and plastic piston is considered. The processes in the firing chamber are described within the framework of quasi- one-dimensional gas dynamics and a geometrical law of propellant burn by means of Lagrangian mass coordinates. The deformable piston is considered to be an ideal liquid with specific equations of state. The numerical solution is obtained by means of a modified explicit von Neumann scheme. The calculation results given show that the ballistic setup with a tapered adapter and plastic piston produces increased shell muzzle velocities by a factor of more than 1.5-2.