Scholarlink

<p>This paper presents a new wide-ranging reference correlation for the viscosity of neon, incorporating recent ab initio dilute gas calculations and new critically evaluated experimental data. Developed using a new symbolic regression technique, the correlation is designed to be used with a high-accuracy Helmholtz equation of state (EOS) spanning from 24.5561&#xa0;K (the triple point) to 700&#xa0;K, at pressures up to 700&#xa0;MPa. The model includes a zero-density correlation based on ab initio values, valid from 4&#xa0;K to 5000&#xa0;K with an uncertainty of 0.016&#xa0;% (<i>k</i> = 2) at 298.15&#xa0;K. The estimated uncertainty of the correlation based on comparisons with the best experimental data indicates that the uncertainty for the supercritical fluid at pressures up to 1&#xa0;MPa for temperatures from 253&#xa0;K to 473&#xa0;K is 0.2&#xa0;% (at <i>k</i> = 2), offering a significant improvement over a current widely-used model based on extended corresponding states. The estimated uncertainty for pressures from 1&#xa0;MPa to 20&#xa0;MPa is 0.4&#xa0;% for temperatures from 298&#xa0;K to 450&#xa0;K. In other validated regions of <i>T</i>, <i>p</i> space, the uncertainty varies up to a maximum of 6&#xa0;%. In the liquid phase along the saturation boundary, the uncertainty is 4&#xa0;%. The correlation behaves in a physically reasonable manner over the full range of applicability of the EOS although uncertainties are higher in regions where data are not available for full validation.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Reference Correlation of the Viscosity of Neon

  • 期刊论文

  • 发表日期：

    2026年4月13日

查看全文
  • Sofia Sotiriadou,
  • Konstantinos D. Antoniadis,
  • Marc J. Assael,
  • Viktor Martinek,
  • Monika Thol,
  • Marcia L. Huber

摘要

This paper presents a new wide-ranging reference correlation for the viscosity of neon, incorporating recent ab initio dilute gas calculations and new critically evaluated experimental data. Developed using a new symbolic regression technique, the correlation is designed to be used with a high-accuracy Helmholtz equation of state (EOS) spanning from 24.5561 K (the triple point) to 700 K, at pressures up to 700 MPa. The model includes a zero-density correlation based on ab initio values, valid from 4 K to 5000 K with an uncertainty of 0.016 % (k = 2) at 298.15 K. The estimated uncertainty of the correlation based on comparisons with the best experimental data indicates that the uncertainty for the supercritical fluid at pressures up to 1 MPa for temperatures from 253 K to 473 K is 0.2 % (at k = 2), offering a significant improvement over a current widely-used model based on extended corresponding states. The estimated uncertainty for pressures from 1 MPa to 20 MPa is 0.4 % for temperatures from 298 K to 450 K. In other validated regions of T, p space, the uncertainty varies up to a maximum of 6 %. In the liquid phase along the saturation boundary, the uncertainty is 4 %. The correlation behaves in a physically reasonable manner over the full range of applicability of the EOS although uncertainties are higher in regions where data are not available for full validation.