摘要
由于量子效应的影响 ,低温下He 3的性质与He 4有很大差异。对于4K～ 2 0K气相He 3的性质可利用改进的Strobridge方程来计算 ;而在 2 0K～ 1 0 0K温区 ,通过引入对比德布罗意波长作为第三参数来描述量子效应而建立的改进量子对比态模型可用于计算该温区He 3的性质。基于上述计算方法 ,采用计算机程序设计 ,建立了He 3低温热物性数据库 ,该数据库可以计算压力在 1 0MPa以下、温度介于 1K～ 1 0 0K之间He 3的pVT性质、焓、内能、熵、热导率和粘度 。
The properties of the isotope He 3 differ considerably from those of He 4 at low temperatures because of quantum effects Based on the modified Strobridge Equation, the properties of He 3 between 4K and 20 K could be calculated A correlation based on the modified quantum version of the principle of corresponding states, in which the reduced de Broglie wavelength * is introduced as the third parameter besides the reduced temperature and volume, is used to calculate the thermodynamic properties of He 3 from 20 K to 100 K And a computer program is built which can calculate the properties of He 3 between 1 K and 100 K, including the pVT properties, entropy, enthalpy, internal energy, thermal conductivity and viscosity The accuracy of the program is sufficient for engineering purposes
出处
《低温工程》
CAS
CSCD
北大核心
2002年第6期21-29,共9页
Cryogenics
