In the present work, thermal performance and entropy generation of two-phase nanofluid in a circular channel equipped with multiple conical vanes filled by porous material are studied. The vanes used in the present study are designed to be able to connect to an electric motor and can rotate (as a feature). However, in this study, only the static case of the vanes is studied. It was shown that the use of the above design can lead to increased heat transfer with an appropriate pressure drop. At a constant pumping power or when there is a limit on the flow rate, the use of the vane design can lead to more heat transfer. It is, therefore, energy-saving and can be used as a viable option for energy storage. The thermal performance illustrates that in the non-porous case, the best PEC occurs for the six rows of vanes, and for the porous case, the best PEC cases occur for three rows and six rows of vanes in Da = 10⁻³. At maximum flow velocity and minimum permeability, the highest entropy generation is observed, which is affected by thermal entropy generation. Increasing the number of conical branches leads to increased entropy generation. The results show that a 100-fold reduction in permeability can increase heat transfer by up to 8%, while a three-fold increase in Reynolds number can improve heat transfer by more than 100%.

在目前的工作中，研究了具有多孔材料填充的多个锥形叶片的圆形通道中两相纳米流体的热性能和熵的产生。本研究中使用的叶片设计为能够连接至电动机并可以旋转（作为特征）。但是，在本研究中，仅研究叶片的静态情况。结果表明，采用上述设计可以在适当的压降下增加热传递。在恒定的泵送功率或流速受到限制的情况下，叶片设计的使用会导致更多的热传递。因此，它是节能的，并且可以用作能量存储的可行选择。热性能表明，在无孔情况下，六排叶片的PEC最好，而在多孔情况下，Da  = 10 ^-3。在最大流速和最小渗透率下，观察到最高的熵产生，这受热熵产生的影响。锥形分支数量的增加导致熵的产生增加。结果表明，渗透率降低100倍可以使传热增加高达8％，而雷诺数增加3倍可以使传热提高100％以上。