基于氦气置换的超大型土工离心机缩比模型温控实验研究

郑传祥,戴煜宸,魏双,颜加明,黄维

Experimental study on temperature control of scaled model of ultra-large geotechnical centrifuge based on helium replacement

Chuanxiang ZHENG,Yuchen DAI,Shuang WEI,Jiaming YAN,Wei HUANG

表 1 空气与氦气物性参数

Tab.1 Physical properties of air and helium

介质 $ \rho /(\mathrm{k}\mathrm{g}\cdot {\mathrm{m}}^{-3}) $ $ \mu /(\mathrm{P}\mathrm{a}\cdot \mathrm{s}) $ $ {c}_{p}/(\mathrm{J}\cdot {\mathrm{k}\mathrm{g}}^{-1}\cdot {\mathrm{K}}^{-1}) $ $ \lambda /(\mathrm{W}\cdot {\mathrm{m}}^{-1}\cdot {\mathrm{K}}^{-1}) $ 空气 1.16 1.81×10−5 1 005.0 0.025 9 氦气 0.17 2.02×10−5 5 193.2 0.151 8