物理学报Issue(15)：1-6,6.DOI:10.7498/aps.63.150505
一种简化维里型状态方程预测高温甲烷PV T关系*
Prediction of methane PVT relations at high temp eratures by a simplified virial equation of state
摘要
Abstract
In order to meet the demand of describing the supercritical gas under high temperature and medium-high pressure conditions, such as in detonation circumstance, a simplified virial equation of state (EOS), named Han-Long (HL), is presented, which is based on Lennard-Jones potential function. One hundred and twelve sets of theoretical data for methane above 1000 K are calculated using HL EOS. We obtain that the volume average absolute deviation (AAD) is about 1% and the maximum error is 3.28%; this error is far lower than the calculation deviation of DMW (Duan-Moller-Weare) EOS and BS (Belonoshko-Saxena) EOS. The shockwave data of methane is also calculated by HL EOS and the AAD are less than 3%. Results show that HL EOS can well describe the thermodynamic state of CH4 at high temperatures.关键词
状态方程/Lennard-Jones势能函数/甲烷/高温Key words
equation of state/Lennard-Jones potential function/methane/high temperatures引用本文复制引用
韩勇,龙新平,郭向利..一种简化维里型状态方程预测高温甲烷PV T关系*[J].物理学报,2014,(15):1-6,6.基金项目
国家自然科学基金(批准号:11372291)和科技创新基金(批准号：KJCX-201202)资助的课题 （批准号:11372291）
