Research on Influence of Selected Factors on Burning Rate of Polyethylene in Solid Fuel Ramjet

doi:10.3969/j.issn.1000-1093.2014.11.008

Abstract

Abstract: Numerical simulation and direct test methods are used to research the influence of selected factors on the burning rate of polyethylene in a solid fuel ramjet. The influences of air mass flux and fuel internal diameter on average burning rate and local average burning rate are studied. The relationship between reattachment length ratio and step height ratio is analyzed. The results show that the average burning rate of the fuel is increased by power function with the increase in air mass flux, and decreased by power function with fuel internal diameter. The difference between simulation and experimental results is caused by the ignition process and the computational accuracy of turbulent combustion model to predict the heat transfer behind a sudden expansion step. The reattachment length ratio increased by liner function with step height ratio.

Key words: ordnance science and technology, solid fuel ramjet, polyethylene, burning rate

CLC Number:

V435

CHEN Xiong， CHENG Hong-gang， ZHOU Chang-sheng， ZHU Guo-qiang. Research on Influence of Selected Factors on Burning Rate of Polyethylene in Solid Fuel Ramjet[J]. Acta Armamentarii, 2014, 35(11): 1783-1789.

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