Abstract
The widely used general regression rate models in hybrid combustion depend solely on oxidizer mass flux [1]. However, these regression rate models cannot adequately represent well important effect of the thermo-chemical properties of each solid fuel and oxidizer. In this study, the regression rate equation using both the mass flux and mass transfer number (B number), which reflects the thermo-chemistry effect of the propellant, has been examined to determine whether this equation can represent the regression behavior of some polymer based fuels in the absence of radiation. In addition, the calculation of the B number either using the uniform thermo-chemistry property of each propellant combination or using the thermo-chemistry property evaluated at each test case has been performed to observe their influences on the regression rate. Gaseous oxygen and polymer (HDPE, PMMA and PP) are applied as the oxidizer and the fuels, respectively.
Published Version
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