Heat-mass transfer in a liquid flow over a stretching surface at a stagnation regime is significant in optimal manufacturing and quality assurance depending on the rheological behavior of viscoelastic fluids in process machinery. Stretching sheet flow at a stagnation point is a standard procedure used in the metallurgical industries for manufacturing of different equipment and cooling systems. Due to its various applications in industrial operations, the current study aims to explore the heat-mass transfer of buoyancy-driven flow of cross liquid over a stretching sheet at a stagnation point. The heat and mass transfer under the framework of Dufour and Soret effects, radiant heat, and chemical reactions are assessed. Furthermore, the analysis also takes into account the linear and nonlinear convection-diffusion phenomena. The model findings are obtained by merging the Bvp4c in MATLAB using a local similarity technique up to the fourth truncation threshold. The findings illustrate that the action of magnetic field can be used to control the flow across the sheet. Temperature increases with thermal radiation, Biot number and Dufour number. The action of buoyancy ratio parameter result in improvement in fluid flow. With increasing trend of magnetic and Weissenberg number, the flow field and skin friction coefficient drops.

中文翻译：

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具有 Dufour、Soret 效应和化学反应的停滞区附近交叉液体的混合对流和热传质


在停滞状态下，液体流经拉伸表面的热传质对于最佳制造和质量保证非常重要，具体取决于工艺机械中粘弹性流体的流变行为。在停滞点拉伸板材流动是冶金工业中用于制造不同设备和冷却系统的标准程序。由于其在工业操作中的各种应用，本研究旨在探索在停滞点处交叉液体在拉伸板上的浮力驱动流动的热-质量传递。评估了 Dufour 和 Soret 效应、辐射热和化学反应框架下的传热和传质。此外，该分析还考虑了线性和非线性对流-扩散现象。模型结果是通过在 MATLAB 中使用局部相似性技术合并 Bvp4c 获得的，直到第四个截断阈值。研究结果表明，磁场的作用可用于控制流经片材的流动。温度随热辐射、Biot 数和 Dufour 数的升高而升高。浮力比参数的作用导致流体流动的改善。随着磁和魏森伯格数的增加趋势，流场和蒙皮摩擦系数下降。