초임계 정상 화염편 모델을 이용한 케로신/기체산소 동축 전단분사기의 끝단 두께에 따른 혼합 및 연소 특성

The effect of the splitter thickness of a kerosene/gaseous oxygen shear-coaxial injector under supercritical condition is numerically investigated in order to analyze the mixing and combustion characteristics. Turbulent numerical model is based on large eddy simulation with Redlich-Kwong-Peng-Robinson equation of state to calculate real-fluid properties. A combustion model is applied to the real-fluid steady flamelet model which is based on kerosene/gaseous oxygen flame structure results. The vortex generation and combustion characteristics on the mixing layer are compared the reacting with non-reacting result according to the tip thickness. As the tip thickness increases, the temperature distribution is in non-uniform due to the vortex size. However, a tendency of the scalar dissipation rate is similar to each other.