通流forchheimer - bsamadard对流开始时的密度最大值展望

Sowbhagya .
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引用次数: 0

摘要

考虑立方密度-温度关系,采用Forchheimer-Darcy模型,研究了垂直通流对多孔对流发生的影响。利用伽辽金技术对稳定性特征值问题进行了数值解释。与密度-温度的线性关系相反,通流的方向改变了对流的开始。根据热条件参数λ1和λ2的值,发现依赖于通流的psamclet数可以稳定流体对对流的运动,并且发现向上流动比向下流动稳定或不稳定。随着λ1和λ2的增加,观察到对起始的不稳定效应。对达西数Da和Forchheimer阻力系数、cb不稳定特性进行了研究和图解。
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Outlook of Density Maximum on the Onset of Forchheimer-Bénard Convection with throughflow
The vertical throughflow effect is investigated on the onset of porous convection by considering a cubic density-temperature relationship and using the Forchheimer-Darcy model. The stability eigenvalue problem is explained numerically using the Galerkin technique. Contrary to the linear density-temperature relationship, the direction of throughflow alters the onset of convection. The throughflow dependent Péclet number is found to stabilize the fluid motion against convection and the upflow is found to be either stabilizing or destabilizing than the downflow depending on the values of thermal condition parameters λ1 and λ2. A destabilizing effect on the onset is observed with increasing λ1 and λ2. The Darcy number Da and the Forchheimer drag co-efficient, cb instability characteristics have been investigated and depicted graphically.
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来源期刊
Journal of Mines, Metals and Fuels
Journal of Mines, Metals and Fuels Energy-Fuel Technology
CiteScore
0.20
自引率
0.00%
发文量
101
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