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단순 입방구조의 분자동역학 해석을 위한 최적화된 시간간격 평가
이덕진(Dockjin Lee),장윤석(Yoon-Suk Chang),최재붕(Jae-Boong Choi),김문기(Moon-Ki Kim),김영진(Young-Jin Kim) 대한기계학회 2009 대한기계학회 춘추학술대회 Vol.2009 No.5
Molecular dynamics (MD) simulation is widely used to explain the physical phenomenon which cannot be solved by theoretical continuum approach. In case of MD simulation requiring large number of molecules or atoms, determination of proper time step is important. In this study, we performed theoretically eigenvalue analysis of molecules to examine the optimized time step for stable MD simulation of simple cubic lattices. The Verlet algorithm is used to carry out the integration processes. The Lennard-Jones 6-12 potential, one of the common two-body potentials, is considered as harmonic oscillation function under the simple assumption.
바이오매스와 SRF를 이용한 이중유동층 가스화기의 최적운전조건 도출
윤형철(Hyungchul Yoon),조성호(Sungho Cho),이덕진(Dockjin Lee),문고영(Goyoung Moon),조순행(Soonhaing Cho) 한국신재생에너지학회 2016 신재생에너지 Vol.12 No.4
This study has a focus on deriving the optimal operating conditions of biomass and waste plastic film SRF under dual fluidized bed gasification and on its domestic commercialization. From the analysis results, it was proven that the carbon conversion of biomass was optimized as 81% at 826℃ with 1,334 g/hr steam stream and 5.56 L/min air stream. On the other hand, that of waste plastic film SRF was 71% at 750℃ with 754 g/hr steam stream and 18.8 L/min air stream. In case of operation on waste plastic film SRF, temperature should be under 750℃ to prevent from agglomeration of bed materials.