以浮式液化天然气存储再气化装置(LNG-Floating Storage and Regasification Unit,LNG-FSRU)为研究对象,针对其常年处于水域中受到波浪的冲击、船体始终处于晃荡状态、对其液舱充注过程中LNG的稳定程度造成影响的问题,采用FLUENT软件,...以浮式液化天然气存储再气化装置(LNG-Floating Storage and Regasification Unit,LNG-FSRU)为研究对象,针对其常年处于水域中受到波浪的冲击、船体始终处于晃荡状态、对其液舱充注过程中LNG的稳定程度造成影响的问题,采用FLUENT软件,选取合适的湍流模型、多相流模型、耦合运动模型等进行数值模拟。假设初始液货舱内LNG密度均匀,没有发生分层,且充注过程中液货舱始终处于运动状态,仿真其内部LNG的扰动变化过程。通过控制变量法,分别设置多组不同的充注速度、充注密度、充注量的情况来进行对比分析。研究成果对LNG-FSRU充注过程中控制LNG稳定性具有一定的参考价值。展开更多
The density functional theory(DFT)is used for the description of adsorption of methane on single walled carbon nanotubes(SWNT). Methane molecule is modeled by the Lennard-Jones potential,while the interaction between ...The density functional theory(DFT)is used for the description of adsorption of methane on single walled carbon nanotubes(SWNT). Methane molecule is modeled by the Lennard-Jones potential,while the interaction between wall- fluid molecules is represented by the potential function proposed by Tjatjopoulos et al. To verify the DFT method, a comparison of the local density profiles and adsorption isotherms from the DFT and computer simulation for the tube diameter of 4.077 nm at 300 K is presented. Furthermore, adsorption isotherms for the SWNT of diameter 1.632 , 2.04 ,3.805 and 4.077 nm at 148 K are given in this short communication as a preliminary report.展开更多
文摘以浮式液化天然气存储再气化装置(LNG-Floating Storage and Regasification Unit,LNG-FSRU)为研究对象,针对其常年处于水域中受到波浪的冲击、船体始终处于晃荡状态、对其液舱充注过程中LNG的稳定程度造成影响的问题,采用FLUENT软件,选取合适的湍流模型、多相流模型、耦合运动模型等进行数值模拟。假设初始液货舱内LNG密度均匀,没有发生分层,且充注过程中液货舱始终处于运动状态,仿真其内部LNG的扰动变化过程。通过控制变量法,分别设置多组不同的充注速度、充注密度、充注量的情况来进行对比分析。研究成果对LNG-FSRU充注过程中控制LNG稳定性具有一定的参考价值。
基金国家重点基础研究发展规划项目基金! (No .G2 0 0 0 0 480 10 )国家自然科学基金! (No .2 97760 0 4)国家高性能计算基金 !(No
文摘The density functional theory(DFT)is used for the description of adsorption of methane on single walled carbon nanotubes(SWNT). Methane molecule is modeled by the Lennard-Jones potential,while the interaction between wall- fluid molecules is represented by the potential function proposed by Tjatjopoulos et al. To verify the DFT method, a comparison of the local density profiles and adsorption isotherms from the DFT and computer simulation for the tube diameter of 4.077 nm at 300 K is presented. Furthermore, adsorption isotherms for the SWNT of diameter 1.632 , 2.04 ,3.805 and 4.077 nm at 148 K are given in this short communication as a preliminary report.
