多孔介质孔隙率对池沸腾传热性能影响机理的模拟研究OA北大核心CSTPCD
Simulation Study of Porosity Effects of Porous Media on Pool Boiling Heat Transfer Performances
采用介观相变格子Boltzmann(lattice Boltzmann,LB)方法,在孔隙尺度下研究了多孔介质的孔隙率对池沸腾换热过程的影响,重点分析了不同孔隙率时气泡的运动过程,并对气泡在多孔介质中的典型状态进行了力平衡分析,进而探究了多孔介质孔隙率影响沸腾传热的机理.结果表明,与无多孔介质的平板表面相比,多孔材料能够有效地降低初始成核的壁面过热度,增强流体的扰动,并且能够显著提升临界热流密度(critical heat flux,CHF)值.…查看全部>>
The mesoscopic phase change lattice Boltzmann method was used to study the effect of the medium porosity on pool boiling heat transfer at the pore scale.The motion processes of bubbles were mainly consid-ered for different porosities,and the force balance was analyzed in typical states of bubbles in porous media,to explore the mechanism of the influence of medium porosity on boiling heat transfer.The results show that,compared with the flat surface wit…查看全部>>
何树;娄钦
上海理工大学 能源与动力工程学院,上海 200093上海理工大学 上海市动力工程多相流动与传热重点实验室,上海 200093
力学
多孔介质池沸腾换热气泡动力学孔隙率
porous mediumpool boiling heat transferbubble dynamicsporosity
《应用数学和力学》 2024 (3)
CO2地质封存过程中多相多组分反应流体输运的格子Boltzmann数值建模及物理机理研究
348-364,17
国家自然科学基金(51976128)上海市浦江计划(22PJD047)
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