In this exploration, a double stratified mixed convective flow of couple stress nanofluid past an inclined stretching cylinder using a Cattaneo-Christov heat and mass flux model is considered. The governing partial differential equation of the boundary layer flow region is reduced to its corresponding ordinary differential equation using a similarity transformation technique. Then, the numerical method called the Galerkin finite element method (GFEM) is applied to solve the proposed fluid model. We performed a grid-invariance test or grid-convergence test to confirm the convergence of the series solution. The effects of the different noteworthy variables on velocity, temperature, concentration, local skin friction, local Nusselt number, and local Sherwood number are analyzed in both graphical and tabular forms. We have compared our result with the existing results in the literature, and it is shown that GFEM is accurate and efficient. Moreover, our result shows that the velocity field is retarded when the angle of inclination enhances and the heat transfer rate is reduced with larger values of the curvature of the cylinder.

中文翻译：

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使用Cattaneo-Christov热流和质量通量模型的耦合应力纳米流体经过倾斜拉伸圆柱体的双分层混合对流

在这项探索中，考虑使用Cattaneo-Christov热质通量模型，耦合应力纳米流体通过倾斜拉伸圆柱体的双重分层混合对流。使用相似变换技术将边界层流动区域的控制偏微分方程简化为对应的常微分方程。然后，采用称为Galerkin有限元方法（GFEM）的数值方法来求解所提出的流体模型。我们执行了网格不变性测试或网格收敛性测试，以确认级数解的收敛性。以图形和表格形式分析了不同的显着变量对速度，温度，浓度，局部皮肤摩擦，局部Nusselt数和局部Sherwood数的影响。我们将我们的结果与文献中的现有结果进行了比较，结果表明GFEM是准确而有效的。而且，我们的结果表明，当圆柱的曲率值较大时，当倾斜角度增大而传热速率减小时，速度场会延迟。