THERMAL SCIENCE

International Scientific Journal

EXPERIMENTAL AND NUMERICAL ANALYSIS OF THERMO-CHEMICAL EROSION IN GUN STEEL

ABSTRACT
Various factors of thermo-chemical erosion process in gun steel were analysed. The factors are mainly related to the thermal load of gun barrel inside surface, characteristics of barrel surface and chemical interactions between propellant combustion products and barrel surface. The experimental simulation of conditions in gun barrel was carried out by vented vessel firings in the device based on modification of 37 mm M39 gun. The nozzle mass loss during firing was the measure of gun steel erosion. The main thermal factor of erosion is maximum nozzle inner surface temperature. This temperature was determined experimentally by micro thermocouples measurements at specified distance away from the inner surface and by numerical analysis of the inverse heat conduction problem. Modelling of two-phase flow of propellant combustion products and unburned propellant grains in the vented vessel and heat transfer to the nozzle were conducted using developed one-dimensional interior ballistic code and computational fluid dynamics simulation in FLUENT. Influence of different propellants, titanium-dioxide/wax wear reducing liner and tungsten-disulfide nanoparticles layer on nozzle erosion was analysed. Good agreement between experimental and computational results was achieved.
KEYWORDS
PAPER SUBMITTED: 2018-06-08
PAPER REVISED: 2018-06-22
PAPER ACCEPTED: 2018-06-27
PUBLISHED ONLINE: 2018-09-30
DOI REFERENCE: https://doi.org/10.2298/TSCI180608194R
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2019, VOLUME 23, ISSUE Issue 2, PAGES [599 - 612]
REFERENCES
  1. Ahmad, I., The problem of gun barrel erosion: an overview, in Gun propulsion technology, Vol. 109, Progress in Astronautics and Aeronautics, (Ed. M Summerfield), AIAA, 1988, pp. 311-356
  2. Ebihara, W.,T., Rorabaugh D.T., Mechanisms of gun-tube erosion and wear, in Gun propulsion technology, Vol.109, Progress in Astronautics and Aeronautics, (Ed. M Summerfield), AIAA, 1988, pp. 357-376
  3. Bracuti, A., J., Wear-reducing additives - role of the propellant, in Gun propulsion technology, Vol.109, Progress in Astronautics and Aeronautics, (Ed. M Summerfield), AIAA, 1988, pp. 377-412
  4. Sopok, S., et al., Thermal-chemical-mechanical gun bore erosion of an advanced system, part one: theories and mechanisms, Wear 258 (2005), pp. 659-670
  5. Sopok, S., et al., Thermal-chemical-mechanical gun bore erosion of an advanced system, part two: modelling and predictions, Wear 258 (2005), pp. 671-683
  6. Jaramaz, S., Micković, D., Simulation of Gun Tube Erosion (in Serbian), Scientific Technical Review, 40 (1990), 8-9, pp. 35-41
  7. Adžić, M., et al., Determination of inner surface gun bore temperature (in Serbian), Scientific Technical Review, 45 (1997), 5-6, pp. 70-73
  8. Adžić, M., et al., Design of Dedicated Instruments for Temperature Distribution Measurements in Solid Oxide Fuel Cells, Journal of Applied Chemistry, 27 (1997), 12, pp. 1355-1361
  9. Carasso, A., Determining Surface Temperatures from Interior Observations, SIAM Journal of Applied Mathematics, 42 (1982), pp. 558-574
  10. Carasso, A., Nonlinear Inverse Heat Transfer Calculations in Gun Barrels, Report ARO 19643.1-MA, Center for Applied Mathematics, National Bureau of Standards, Washington, 1983
  11. Versteegen, P. L., Varcolik, F., D., Heat transfer studies in gun tubes, Report BRL-CR-00393, Ballistic Research Laboratory, Aberdeen Proving Ground, MD, USA, 1979
  12. N. Gerber, N., Bundy, M., Effect of Variable Thermal Properties on Gun Tube Heating, Report BRL-MR-3984, Ballistic Research Laboratory, Aberdeen Proving Ground, MD, USA, 1992
  13. Jaramaz, S., et al., Determination of gun propellant erosivity: Experimental and theoretical studies, Experimental Thermal and Fluid Science, 34 (2010), pp. 760-765
  14. . Boisson, D., et al., Experimental Investigation of Heat Transfer in a 120 mm Testing Gun Barrel Based on a Space Marching Finite Difference Algorithm for the Inverse Conduction Method, 19th International Symposium on Ballistics, Interlaken, Switzerland, 2001, pp. 163-170
  15. ***, Fluent Inc., FLUENT 5 User's Guide, 1998
  16. Micković, D., Jaramaz, S., NERT - Computer Code for Nozzle Erosion in Vented Chamber (in Serbian), Weapon Systems Department, Faculty of Mechanical Engineering, Report No 3/2007, Belgrade, 2007
  17. Micković, D., Jaramaz, S., TCC - Computer Code for Thermo-chemical Calculations (in Serbian), Report No 1/1996, Weapon Systems Department, Faculty of Mechanical Engineering, Belgrade, 1996
  18. Cvetinović D., et. al., Review of the Research on the Turbulence in the Laboratory for Thermal Engineering and Energy, Thermal Science, 21 Suppl. 3 (2016), pp. S875-S898
  19. Weinacht, P., Conroy, P., A Numerical Method for Predicting Thermal Erosion in Gun Tubes, Report ARL-TR-1156, Army Research Laboratory, Aberdeen Proving Ground, MD, USA, 1996
  20. Dorignac, E., Vullierme, J., Error Resulting from the Surface Conduction Effects when Determining Surface Transfers by "Thin Wall" or "Semi-infinite" Wall Methods, La Recherche Aérospatiale, (1991), 1, pp. 67-73
  21. Woodley, C., et al., QinetiQ Studies on Wear and Erosion in Gun Barrels, in The Control and Reduction of Wear in Military Platforms, RTO-MP-AVT-109, 2004, pp 15-1-15-12
  22. Nelson, W.C., Ward, J.R., Calculation of Heat Transfer to the Gun Barrel Wall, Journal of Ballistics, 6 (1982), 3, pp. 1518-1524
  23. Horst, A., W., The Influence of Propellant Grain Shape, Size, and Composition on Solid Phase Motion and Heat Transfer to the Gun Tube, 26th International Symposium on Ballistics, Miami, FL, USA, 2011, pp. 12-16
  24. Jojić, B., et al., Manual for the Design of Probing Rockets - Volume II Propulsion Group (in serbian), SAROJ, Belgrade, 1978
  25. Živković, S., et al., Experimental and Simulation Testing of Thermal Loading in the Jet Tabs of a Thrust Vector Control System, Thermal Science, 20 Suppl. 1 (2016), pp. S275-S286
  26. Erčević, M., et al., Applying of Nanotechnology in Production of Rifle Ammunition, 7th International Conference on Defensive Technologies OTEH, Belgrade, 2016, pp. 260-265
  27. Conroy, P., Vented Fixture Modeling, Report ARL-TR-2952, Army Research Laboratory, Aberdeen Proving Ground, MD, USA, 2003
  28. Brosseau, T., L., Ward, R., Measurement of Heat Input into the 105 mm M68 Tank Cannon Firing Rounds Equipped with Wear-Reducing Additives, Report BRL-TR-02056, Ballistic Research Laboratory, Aberdeen Proving Ground, MD, USA, 1978
  29. Lawton, B., Thermal and Chemical Effects on Gun Barrel Wear, 8th International Symposium of Ballistics, Orlando, FL, USA, 1984, pp. II-28-II-36

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence