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http://dx.doi.org/10.5139/JKSAS.2020.48.9.711

Visualization of Supercritical Mixed Hydrocarbon-Fuel Droplet  

Song, Juyeon (Graduate School, Korea Aerospace University)
Song, Wooseok (Graduate School, Korea Aerospace University)
Koo, Jaye (School of Aerospace and Mechanical Engineering, Korea Aerospace University)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.48, no.9, 2020 , pp. 711-716 More about this Journal
Abstract
Injection visualization of heated mixed simulant droplets based on hydrocarbon fuel was performed under supercritical state environment. Mixed simulant consisted of Decane and Methylcyclohexane with different critical pressure and critical temperature. Flows injected into the supercritical state environment created droplet by Rayleigh breakup mechanism, and the Oh number and Re number were determined to confirm the breakup area. The temperature of the mixed simulant varied from Tr=0.49 to Tr=1.34. The flow rate was maintained at 0.7 to 0.8 g/s. Droplet became shorter in breakup length as heated and into a lumped form. Second droplet was formed and when Tr=1.34, the phase was not visible in the supercritical state with local unsteady flow.
Keywords
Supercritical Fluid; Hydrocarbon Fuel; Shadowgraph Technique; Phase Change;
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