Ebook: Numerical Solution For Determinining Piston Velocity In Two Stage Gas Guns And Validation Through Simulation In Ansys

(Джитенда Джейн, Сони С.Л., Шарма Дилип. Численная оценка скорости поршня в двухфазном газовом орудии и ее валидация посредством моделирования в Ansys).Journal of Electrical and Mechanical Engineering Issue 1. 2010.A design of automated system or any other system needs it to be studied well & understood in all respect before it is manufactured to make system cost effective. It is also essential to understand behavior of system wherein it is impractical to verify through experimental results. Simulation is a technique wherein a system is simulated on a computer or a scaled model is prepared. Results of experiment of scaled models are extrapolated to understand the system as such. Methodology is more so pronounced in field of Gunnery, Aviation, Spacecraft, Atomic explosion studies. Simulation technique is a very cost effective tool in commercial markets but it is an essential procedure in fields such as e.g. Gunnery, Aviation, Spacecraft, Atomic explosion studies due to inherent nature of application irrespective of cost effectiveness. Since know how and complete system experimental results are secrets of respective countries, simulations are only answer for any Nation before proceeding ahead for installation of hardware. One such system is Simulation of Hyper Velocity Gas Guns. These guns are used as laboratory tools to create hyper velocities of magnitude of 7-8 KMs/Sec under laboratory conditions to study Projectiles-Armor Impact Phenomena, Meteoroids Collisions, and Blast Effects of Atomic Explosion on Structures etc. Manufacture of such a system involves millions of dollars and needs careful examination before commencement of project. It is a study of continuous dynamic simulation. Study involves complex system of burning of propellants, dynamic Heat transfer, rapid changes in pressure and temperatures of propellant gasses, movement of pistons, rapid compression of low molecular wt gas e.g. H2 or He, study of gasses through bursting of diaphragm, movement of projectile under hypervelocity conditions. Each sub system is validated to an extent possible by analytical methods and experimental results of respective sub systems existing in other systems.Contents:
Introduction
Description of Model
Problem Description
Governing Equations[2], [8], [9], [10] for main solution
Discussion on Methodology of Solution and Results
Conclusion