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http://dx.doi.org/10.6108/KSPE.2021.25.6.045

Combustion Characteristics of the Gaseous-methane & Gaseous-oxygen Reactants under Highly Fuel-rich Conditions  

Kang, Yun Hyeong (Department of Mechanical Engineering, Graduate School, Pukyong National University)
Ahn, Hyun Jong (Department of Mechanical Engineering, Graduate School, Pukyong National University)
Bae, Chang Han (Department of Mechanical Design Engineering, Pukyong National University)
Kim, Jeong Soo (Department of Mechanical Engineering, Pukyong National University)
Publication Information
Journal of the Korean Society of Propulsion Engineers / v.25, no.6, 2021 , pp. 45-52 More about this Journal
Abstract
A hot-firing test was conducted using gaseous-methane and gaseous-oxygen under highly fuel-rich condition as a prior study for the development of a liquid propellant small rocket engine. To compare combustion characteristics for various equivalence ratios, the oxygen flow rate was set to 12 g/s and the methane flow rate was changed according to the equivalence ratio. As a result, it was observed that the steady-state characteristic velocity obtained during the hot-firing test steeply rose in the latter part of each test: the difference between the former and the latter steady value was enhanced overall in proportion to the equivalence ratio. Based on this, the equivalence ratio range depending on the variational characteristics of the characteristic velocity could be divided into three combustion regimes.
Keywords
Methane; Fuel-rich Combustion; Equivalence Ratio; Hot-firing Test; Combustion Efficiency;
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