欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
本文对空气、氢气和氦气流过微细多孔介质内部的流动阻力特性进行了实验研究，分析不同气体在不同颗粒直径条件下摩擦因子与等效雷诺数的关系。结果表明：对于空气、氢气和氦气，当颗粒直径为225μm和125μm时，由于可压缩性的影响，摩擦因子略大于经验公式结果。对于空气，当颗粒直径为90μm和40μm时，实验得到的摩擦因子小于经验公式结果。对于氢气和氦气，当颗粒直径为125μm时，经过可压缩性修正的摩擦因子实验值略小于经验公式结果；颗粒直径为90μm和40μm时，摩擦因子小于经验公式结果。因此，对于空气、氢气和氦气，当颗粒平均直径小于90μm时，微细多孔介质中的流动特性存在稀薄气体效应。
英文摘要：
The flow characteristics of air, hydrogen and helium in microporous media were studied experimentally. The friction factors of different gas in different conditions of average diameters were analyzed. For air, hydrogen and helium, with the average diameter of 225 and 125 μm, the friction factor is larger than the known correlation because of the influence of compressibility. For air, with the diameter of 90 and 40 μm, the friction factors are smaller than the known correlation. For hydrogen and helium, with the diameter of 125 μm, the friction factors are smaller than the known correlation while for the diameter of 90 and 40 μm conditions, the experiment results are significantly smaller than the correlation results. The results show that rarefaction effects occur in gas flows in the microporous media with particle diameters less than 90 μm.
同期刊论文项目
同项目期刊论文
Experimental investigation of convection heat transfer of CO2 at supercritical pressures in a vertic
Experimental and Numerical Study of Film Cooling Heat Transfer with Internal Coolant Cross-flow Effe
Experimental and numerical study of convection heat transfer of CO2 at super-critical pressures duri
Experimental and numerical investigation of convection heat transfer in channels with different type
Experimental study of in-tube cooling heat transfer and pressure drop characteristics of R134a at su
Flow and convection heat transfer characteristics of CO2 mixed with lubricating oil at super-critica
Experimental and Numerical Study on Convection Heat Transfer of CO2 at Super-critical Pressures in V
Experimental and numerical investigation of convection heat transfer Of CO2 at supercritical pressur
位置：