Liquid cooling methods are often used for thermal management of a large caliber gun barrel. In this work, transient thermal analyses of midwall-cooled and externally cooled gun barrels were performed. At first, a novel simulation scheme was developed for the computation of the gun barrel temperature history (temperature variation over time), and its experimental validation was performed. In the computational scheme an internal ballistics code, GUNTEMP8.EXE, was developed to simulate the total heat transfer per cycle for the given ammunition parameters. Subsequently, a finite element (FE) model of the barrel was developed in ANSYS 11.0. Heat transfer to the barrel was approximated by an exponentially decaying heat flux. The FE model was solved to compute for barrel temperature history. Simulations were performed for a burst of 9 cycles, and the results were found to agree with the experimental measurements. Subsequently, the simulation scheme was extended to analyze a burst of 40 cycles at 10 shots per minute (spm). Three cases were investigated as follows: (1) a naturally cooled gun barrel, (2) a gun barrel with midwall cooling channels, and (3) an externally cooled gun barrel. Natural cooling was found insufficient to prevent cook-off, whereas midwall and external cooling methods were found to eliminate any possibility of it. In the context of a self-propelled howitzer, a midwall-cooled gun barrel connected to an engine cooling system was also analyzed.
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e-mail: avanish.ism@gmail.com
e-mail: ahameed.cu@defenceacademy.mod.uk
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September 2010
This article was originally published in
Journal of Heat Transfer
Research Papers
Transient Thermal Analyses of Midwall Cooling and External Cooling Methods for a Gun Barrel
Avanish Mishra,
Avanish Mishra
Department of Mechanical Engineering and Mining Machinery Engineering,
e-mail: avanish.ism@gmail.com
Indian School of Mines Dhanbad
, Jharkhand 826004, India
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Amer Hameed,
Amer Hameed
Weapon Systems and Engineering Dynamics Group, DA-CMT,
e-mail: ahameed.cu@defenceacademy.mod.uk
Cranfield University
, Shrivenham, Swindon, Wilts, SN6 8LA, UK
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Bryan Lawton
Bryan Lawton
Weapon Systems and Engineering Dynamics Group, DA-CMT,
Cranfield University
, Shrivenham, Swindon, Wilts, SN6 8LA, UK
Search for other works by this author on:
Avanish Mishra
Department of Mechanical Engineering and Mining Machinery Engineering,
Indian School of Mines Dhanbad
, Jharkhand 826004, Indiae-mail: avanish.ism@gmail.com
Amer Hameed
Weapon Systems and Engineering Dynamics Group, DA-CMT,
Cranfield University
, Shrivenham, Swindon, Wilts, SN6 8LA, UKe-mail: ahameed.cu@defenceacademy.mod.uk
Bryan Lawton
Weapon Systems and Engineering Dynamics Group, DA-CMT,
Cranfield University
, Shrivenham, Swindon, Wilts, SN6 8LA, UKJ. Heat Transfer. Sep 2010, 132(9): 091901 (8 pages)
Published Online: June 23, 2010
Article history
Received:
March 13, 2009
Revised:
March 16, 2010
Online:
June 23, 2010
Published:
June 23, 2010
Citation
Mishra, A., Hameed, A., and Lawton, B. (June 23, 2010). "Transient Thermal Analyses of Midwall Cooling and External Cooling Methods for a Gun Barrel." ASME. J. Heat Transfer. September 2010; 132(9): 091901. https://doi.org/10.1115/1.4001607
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