摘要
针对多孔介质-多孔泡沫陶瓷的流动阻力特性进行了试验研究,测定了不同空气温度和流速下泡沫陶瓷的流动阻力特性,获得了泡沫陶瓷流动阻力与气流温度、流速及孔隙结构之间的关系.随着气流速度的提高,泡沫陶瓷流动阻力呈现逐渐增大的趋势,且其增长速率逐渐变大;随着气流温度的提高,泡沫陶瓷流动阻力也会呈现逐渐增大的趋势,但其增长速度相对稳定;此外,增大泡沫陶瓷孔隙率、加大多孔介质厚度,也将导致流动阻力提高.
The characteristics of flow resistance in porous foam ceramics were experimental studied in this paper. Based on the measuring results of flow resistance in porous foam ceramics under different air temperature and velocity, the influences of air temperature, air velocity and pore structure on the flow resistance were achieved. With the increasing of air velocity, the flow resistance in porous foam ceramics rose gradually, and the rate of rising enhanced inch by inch. With the increasing of air temperature, the flow resistance rose similarly, but the rate of rising was uniform correspondingly. Moreover, increasing the porosity or the thickness of porous medium would cause the flow resistance rise.
出处
《河北工业大学学报》
CAS
北大核心
2012年第2期60-64,共5页
Journal of Hebei University of Technology
基金
教育部科学技术研究重点项目(210017)
河北省高等学校科学技术研究重点项目(ZD2010122
JH2011109)
关键词
多孔介质内燃机
超绝热燃烧
流动阻力
孔隙率
porous medium （PM） engine
superadiabatic combustion
flow resistance
porosity
