Modelling of Heat Loss in Closed Vessels during propellant Burning

  • U.P. KulKarni High Energy Materials Research Laboratory, Pune .
  • Smita D. Naik Institute of Armament Technology , Pune
Keywords: Burning rate, Closed Vessel Technique, Gun propellants

Abstract

Closed vessel technique is essentially used to determine the force constant, vivacity and the burning rate of gun propellants. In fact, it is the only method to find out these three parameters experimentally. It is a well-known fact that however small the propellant burning time may be, there will be heat loss to the walls of the vessel due to conduction, convection, radiation and also due to the expansion of the vessel. This fact necessitates applying correction to the observed maximum pressure in the experiment. An analysis is presented in this paper as to how this heat loss can be modelled along with discussion about other models reported in this field.

Author Biographies

U.P. KulKarni, High Energy Materials Research Laboratory, Pune .
Mr U.P. Kulkarni joined DRDO at the High Energy Materials Research Laboratory (HEMRL), Pune in 1978. He obtained his MSc (Physics) from Karnatak  University, in 1977 and MTech (Modeling andSimulation) from IAT, Pune, in 1996. His areas of interest are modelling of rocket and gun propellants.
Smita D. Naik, Institute of Armament Technology , Pune
Dr (Mrs) Smita D Naik obtained her PhD from the University of Poona, Pune.. in 1988. She joinedDRDO at the Institute of Armament Technology, Pune, in 1987. Her areas qf research are flightdynamics and stability analysis. She has Pl1blished eight papers in national/international journals.

References

Corner, J. Theory of the interior ballistics of guns. John. Wiley, New York, 1950.

Internal ballistics. HMSO, London, 1951.

Crow, A.D. & Grimshaw W.E. The equation of state of propellant gases. Philosophical Transactions A. , 1932 230, p. 50.

Vittal, D. Correction of closed vessel data for heat loss to the walls of CV from propellant explosion gases. Proceedings 'of the nonlinear ballistic seminar, IAT, Pune, 1974,70.

Sunyuan, Wang & Yongde,Qu. High pressure closed bomb studies and non ideal equation of state for gun propellant gases. ICT, 1988. Paper No.68.

Hendricks, Johan H. & M.de Both Eelco. The Detern1ination Qf pressure loss in a closed vessel, caused by heat loss from measured and calculated data. ICT, 25th International Conference, 1994. FDR, V-22.

Josse, Mailette & Louis-Simon, Lussier. The influence of heat transfer on the calculation of propellant burning rates from closed vessel data. International Symposium on Ballistics, 1990. pp.52-61.

Published
2013-01-01
How to Cite
KulKarni, U., & Naik, S. D. (2013). Modelling of Heat Loss in Closed Vessels during propellant Burning. Defence Science Journal, 50(4), 401-409. https://doi.org/10.14429/dsj.50.3751
Section
Chemical Science & Technology