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ISSN Druckformat: 2150-766X
ISSN Online: 2150-7678
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OPTIMAL DESIGN OF CYLINDRICAL PBX BY THE ENTRANSY DISSIPATION EXTREMUM PRINCIPLE
ABSTRAKT
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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Wei Shuhuan, Chen Lingen, Xie Zhihui, Constructal heat conduction optimization: Progresses with entransy dissipation rate minimization, Thermal Science and Engineering Progress, 7, 2018. Crossref
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Jamalabadi Mohammad Yaghoub Abdollahzadeh, Optimal design of vibrating beam behind a cylinder, Ocean Engineering, 195, 2020. Crossref