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분자동역학을 이용한 그래파이트 표면에서의 화학적 삭마현상에 관한 분자 수준의 이해
Ramki Murugesan,박경락(Gyoung Lark Park),Valery I. Levitas,양희성(Heesung Yang),박재현(Jae Hyun Park),하동성(Dongsung Ha) 한국추진공학회 2015 한국추진공학회지 Vol.19 No.6
We present a microscopic understanding of the chemical erosion due to combustion product on the nozzle throat using molecular dynamics simulations. The present erosion process consists of molecule-addition step and equilibrium step. First, either CO₂ or H₂O are introduced into the system with high velocity to provoke the collision with graphite surface. Then, the equilibrium simulation is followed. The collision-included dissociation and its influence on the erosion is emphasized and the present molecular observations are compared with the macroscopic chemical reaction model.