西安交通大学能源与动力工程学院,西安,710049
网络首发:2015-03-10,
纸质出版:2015
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樊祥山, 孙德魁, 王井山, 等. 利用分子理论估算四氢呋喃的热物理特性参数[J]. 西安交通大学学报, 2015,49(3):44-49.
Estimation for Thermal Properties of Tetrahydrofuran with Molecule Theory[J]. 2015, 49(3): 44-49.
樊祥山, 孙德魁, 王井山, 等. 利用分子理论估算四氢呋喃的热物理特性参数[J]. 西安交通大学学报, 2015,49(3):44-49. DOI: 10.7652/xjtuxb201503008.
Estimation for Thermal Properties of Tetrahydrofuran with Molecule Theory[J]. 2015, 49(3): 44-49. DOI: 10.7652/xjtuxb201503008.
为了开展四氢呋喃作为发动机代用燃料的喷雾燃烧的数值模拟
对四氢呋喃的密度、黏度、表面张力、蒸气压、气化潜热、比热容、导热系数、扩散系数等随温度变化的热物理特性参数进行了估算
并基于分子理论提出了四氢呋喃各参数与温度的关系式。估算过程中应用了对比态原理与基团贡献法
通过分子状态的相对特性值或分子结构预测出了相应物性
对分子偏心带来的影响进行了修正。通过与实验值的比对
各参数关系式的最大误差均小于10%
可满足喷雾和燃烧过程数值模拟的要求; 四氢呋喃在能量密度、黏度、饱和蒸气压和沸点等方面具有的优势
使其有望成为内燃机的代用燃料; 运用分子理论
在较少实验值的基础上可以得到满足数值模拟要求的热物性数据。
To numerically simulate the spray and combustion process of tetrahydrofuran(THF)as an alternative fuel of internal combustion engine
the correlations of thermo-physical properties versus temperature
including density
viscosity
surface tension
vapor pressure
latent heat value
heat capacity
thermal conductivity and diffusion coefficient
are estimated with molecule theory. The estimations are conducted with group-contribution method following the corresponding state theory and the effect from polar molecule structure is modified. The comparison with experimental data indicates that the maximum deviations of all the estimated correlations are much less than 10%
and the estimation thus meets the requirements of numerical simulation on THF spray and combustion process. THF is a promising alternative fuel for internal combustion engine due to the advantages in energy density
viscosity
vapor pressure
and the boiling point.
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