Design of Eyring-Powell fluid over a moving wedge using an artificial neural network: Statistical-based sensitivity with applications in aerodynamics

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Abstract

The wedge-flow configuration has particular significance in engineering applications because it provides a fundamental model for boundary-layer flow over inclined or tapered surfaces, where the imposed pressure gradient strongly influences boundary-layer development, wall shear stress, and heat transfer. Understanding and controlling these characteristics is crucial in many practical engineering applications. Existing studies, however, have mainly considered the effects of individual physical parameters, while the systematic identification of the dominant parameters governing skin-friction behavior and their subsequent use for flow prediction remains limited. Motivated by this gap, the present study aimed to analyze the flow of a non-Newtonian Eyring–Powell fluid over a wedge in the presence of magnetohydrodynamics, thermal radiation, and chemical reaction phenomena, with particular emphasis on sensitivity analysis of the flow parameters using analysis of variance to identify the dominant factors and an ANN model for rapid prediction of the flow behavior. The proposed methodology integrates numerical simulation, response surface methodology, analysis of variance-based sensitivity analysis, and a feedforward artificial neural network trained using the Levenberg–Marquardt algorithm. The magnetic field parameter was found to be the most influential factor affecting the skin friction coefficient, followed by the Eyring–Powell parameter and the wedge parameter, according to the sensitivity analysis. The skin friction coefficient was found to range from 0.9094 to 1.1642. The ANOVA model achieved R² =100% , adjusted -R² =100% , and predicted R² =99% , with an overall p <0.005 . Moreover, the Levenberg–Marquardt artificial neural network yielded regression values ranging from 0.999 to 0.9999 and MSE values on the order of 10^-9 for the Eyring–Powell parameters, indicating highly accurate predictions of the numerical results. The research provides useful insights into the behavior of non-Newtonian flows over wedge surfaces, as well as a practical framework for thermal-fluid analysis in high-performance aerospace, industrial, and thermal-management applications.

Keywords

Eyring–Powell fluid / magnetic field effect / thermal radiation / hybrid technique / artificial neural network / multiple-slip conditions

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