The flow of Casson–Williamson fluid on a stretching surface is considered for the study. The movement of fluid is examined under the effect of external magnetic field, thermal radiation and chemical consequences. The model is formed by considering all the physical aspects responsible for the physical mechanism. The formed mathematical model (partial differential equation) is numerically solved after transforming it into an ordinary one (ordinary differential equation) via similarity invariants. The physical mechanism for velocity, temperature, and concentration is examined through the associated parameters like radiation index, Williamson and Casson parameter, suction/injection parameter, porosity index, and chemical reaction parameter.

本研究考虑了拉伸表面上 Casson-Williamson 流体的流动。在外部磁场、热辐射和化学后果的影响下检查流体的运动。该模型是通过考虑负责物理机制的所有物理方面而形成的。形成的数学模型（偏微分方程）通过相似不变量转化为普通模型（常微分方程）后进行数值求解。通过辐射指数、威廉姆森和卡森参数、吸入/注入参数、孔隙度指数和化学反应参数等相关参数检查速度、温度和浓度的物理机制。