1) the pseudo-critical compressibility factor ξc
虚拟临界压缩因子
1.
Based on the saturated liquid data from 1993 ASHRAE HANDBOOK, two substance dependent parameters in PT equation of state, the pseudo-critical compressibility factor ξc and the slope F, were determined for 33 refrigerants by taking (T, P8)i as input quantities and minimizing the average deviation in saturated liquid densities for each substance.
根据1993 ASHRAE HANDBOOK中的制冷剂物性数据,对每种制冷剂以一系列饱和液相状态点的(T,P8)i作为输入参数,以饱和液相密度的平均相对误差值最小为目标函数,求解了33种制冷剂的PT状态方程参数-虚拟临界压缩因子ξc和斜率F。
2) artificial compressibility parameter
虚拟压缩因子
1.
Numerical computation is carried out and it is found that the QUICK scheme provides much accurate result, but the relationship between stability and mesh Pelect number is considered when it is used; In addition, a low Reynolds number heat transfer problem is simulated by artificial compressibility method to investigate the choice of artificial compressibility parameter and a series of parameters.
本文给出了QUICK格式在非均匀网格下近边界点与内点的统一形式,数值实验表明该格式提高了数值计算精度,但应用时需注意格式稳定性与网格Peclet数的关系;此外,通过数值实验,研究了用虚拟压缩方法计算低雷诺数传热问题时虚拟压缩因子的选取,并给出了一系列虚拟压缩因子的选择值。
3) critical compressibility factor
临界压缩因子
1.
Molecular topological study on eccentric factor and critical compressibility factor of alkane series;
烷烃偏心因子和临界压缩因子的分子拓扑学研究
2.
Quantitative structure-property relationship of eccentric factor and critical compressibility factor of chain alkanes;
链烷烃的偏心因子和临界压缩因子定量构效关系
4) critical coefficient of compressibility
临界压缩因数
5) virtual critical point
虚拟临界点
6) fictitious compress recuperation
虚拟压缩
1.
The fictitious compress recuperation method of determining the earth s external gravity field;
确定地球外部重力场的虚拟压缩恢复法
补充资料:临界压缩因子
分子式:
CAS号:
性质:将以临界参量Tc,pc,Vm,c及对比变量Tr,pr,Vr,所表示的温度T=Tr·Tc,压力p=pr·pc和摩尔体积Vm=Vr·Vm,c代入压缩因子Z的定义式时,有Z=pVm/RT=prpcVrVm,c/RTrTc =(pcVm,c/RTc)(prVr/Tr) =Zc(prVr/Tr)上式中的Zc=pcVm,c/RTc,称为临界压缩因子。由于存在着R=(8/3)(pcVm,c/Tc)的普遍关系,所以对于不同种实际气体来说,Zc均为3/8,是一个常数。
CAS号:
性质:将以临界参量Tc,pc,Vm,c及对比变量Tr,pr,Vr,所表示的温度T=Tr·Tc,压力p=pr·pc和摩尔体积Vm=Vr·Vm,c代入压缩因子Z的定义式时,有Z=pVm/RT=prpcVrVm,c/RTrTc =(pcVm,c/RTc)(prVr/Tr) =Zc(prVr/Tr)上式中的Zc=pcVm,c/RTc,称为临界压缩因子。由于存在着R=(8/3)(pcVm,c/Tc)的普遍关系,所以对于不同种实际气体来说,Zc均为3/8,是一个常数。
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参考词条