Numerical Calculations of Non-Stationary Temperature Fields in Non-Cooled Rocket Engine Nozzle with a Inset of Minimum Thermal Conductivity in the Radial Direction
Journal Title: Problemy Mechatroniki. Uzbrojenie, lotnictwo, inżynieria bezpieczeństwa - Year 2011, Vol 2, Issue 4
Abstract
The paper is a complement to the calculations illustrated and described in the Military University of Technology Bulletin, in the paper [10]. The initial numerical calculations of non-stationary heat transfer in non-cooled short-range anti-aircraft missile rocket engine nozzle are presented. The calculations were performed for the nozzle of carbon steel St 45, which contained graphite insert of graphite 7087 of anisotropic heat transfer and melting point of more than 3800K placed in critical section [1]. New element of the paper is the method of cutting out the insert. This time the insert was cut out in such a way that a minimum thermal conductivity in the direction of r axis is obtained. Engine operation time was around 3 seconds. Numerical calculations were carried out using program COSMOS/M. Calculation results were given in the form of distribution of isotherms in successive intervals in the nozzle body part adjacent to minimum section and illustrated with temperature and heat flux density dependencies on time in chosen knots of numerical networks.
Authors and Affiliations
Marek PREISKORN, Piotr KONIORCZYK, Bogdan ZYGMUNT
Keywords
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