Open AccessEnergy of One-Dimensional Diatomic Elastic Granular Gas:Theory and Molecular Dynamics Simulation
Author(s) -
Siti Nurul Khotimah,
Sparısoma Viridi,
_ Widayani,
Abdul Waris
Publication year - 2016
Publication title -
kontribusi fisika indonesia
Language(s) - English
Resource type - Journals
ISSN - 0854-6878
DOI - 10.5614/itb.ijp.2011.22.3.5
Subject(s) - kinetic energy , diatomic molecule , potential energy , molecular dynamics , kinetic theory , atom (system on chip) , energy (signal processing) , physics , chemistry , vibrational energy , molecule , classical mechanics , atomic physics , quantum mechanics , thermodynamics , computer science , embedded system
One-dimensional ideal diatomic gas is simulated through possible types of motions of its molecule. Energy of each type of its motion is calculated by both theoretical and numerical methods. Analytical calculation of kinetic energy of an atom in translational-vibrational motion is not simple, but it can be solved by numerical method using molecular dynamic simulation. This paper justifies that the kinetic energy of a diatomic molecule can be determined by two different approaches which give the same results. In the first approach, the kinetic energy is calculated as a summation of kinetic energy of each atom. In the second approach, the kinetic energy is calculated as a summation of kinetic energy of translational and vibrational motions.