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Портал Begell Электронная Бибилиотека e-Книги Журналы Справочники и Сборники статей Коллекции
International Journal of Energetic Materials and Chemical Propulsion
ESCI SJR: 0.149 SNIP: 0.16 CiteScore™: 0.29

ISSN Печать: 2150-766X
ISSN Онлайн: 2150-7678

International Journal of Energetic Materials and Chemical Propulsion

DOI: 10.1615/IntJEnergeticMaterialsChemProp.2015014428
pages 65-88

OPTIMAL DESIGN OF CYLINDRICAL PBX BY THE ENTRANSY DISSIPATION EXTREMUM PRINCIPLE

Mohammad Yaghoub Abdollahzadeh Jamalabadi
Department of Mechanical, Robotics and Energy Engineering, Dongguk University-Seoul, 30 Pildong-ro 1gil, Jung-gu, Seoul 100-715, Republic of Korea

Краткое описание

This study uses the entransy dissipation extremum principle to optimize the geometry of conductive routes intruded into a cylindrical solid body for thermal cooling of a plastic bonded explosive. Conductive route cooling, which has relatively high thermal conductivity in terms of the heat-generating mediums into which it is introduced, presents itself as a viable passive method of reducing peak operating temperatures. The objective is to minimize the peak temperature caused by self-heating. Uniform internal heat generation is assumed for the solid body, which has adiabatic conditions on the outer surfaces and thermal contact with conductive routes. The total volume of the plastic bonded explosive and the volume of the conductive routes are fixed. The conductive routes are cylindrical with variable aspect ratios. The optimized geometry and performance are reported as functions of the ratio between the volume of the conductive routes and the plastic bonded explosive volume and the dimensionless parameter that accounts for the thermal conductive ratios. The main results indicate that for fixed conductive mass and thermal conductive ratios, there is an optimal radius-to-length ratio for the conductive routes.


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