Open AccessTransient heat transfer for GPMG’s barrel 7.62x51mm
Author(s) -
Mohamed M. Ghanem,
Ossama R. Abdelsalam
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/973/1/012032
Subject(s) - barrel (horology) , thermocouple , mechanics , transient (computer programming) , heat transfer , dimension (graph theory) , work (physics) , diffusion , materials science , thermodynamics , heat equation , thermal diffusivity , mathematics , physics , mathematical analysis , computer science , composite material , operating system , pure mathematics
In this paper, a modified analytical solution for time-dependent one dimension heat diffusion equation in cylindrical coordinate had been mathematically solved to calculate the temperature distribution through thick-walled weapon barrel subjected to successive shots. The analytical solution has been compared with experimental measurements for the temperature at the outer surface of the barrel at two different positions. The General Purpose Machine Gun (GPMG) 7.62X51 mm was considered as the case of study. The results show a good agreement between the analytical model and the experimental work with a difference less than 3 %. The main difference between them mainly as a result of the very short time of the heating phenomena as it takes about 6 (ms) only, although the used Data Acquisition System was able to take a high sampling rate and a high sensitive thermocouple type k with only 0.5 mm thickness had been used.