이륜자동차의 촉매 변환기 내부 유동 균일도에 관한 수치해석

This study represents about the flow uniformity and pressure drip in catalytic converter. Present research model type is monolithic catalytic converter and this type have been widely used for satisfy and the regulations of pollutant emissions in automobiles. The flow characteristics in a single monolith automotive catalytic converter were investigated by using a computational simulation method. The numerical model with a general cartesian coordinates system is assumed as the steady state, compressible flow and RNG/k- turbulence model. The inlet flow of catalytic converter is assumed as a e uniform distributed flow and it was varied from 2㎧ to 20㎧. Flow uniformity can be improved by inlet velocity increasing. As a numerical simulations, the efficiency of model-3 is increased by inserting a inner guide.