Sensitivity analysis on electro-osmotic flow of EMHD tangent hyperbolic nanofluid through porous rotating disk with variable thermal conductivity, Stefan blowing and thermal radiation

• Published in: Multiscale and Multidisciplinary Modeling, Experiments and Design Experiments and Design, 2025, Vol.8 (1), Article 65
• Main Authors: Senbagaraja, P., De, Poulomi
• Format: Article
• Language: English
• Subjects: Characterization and Evaluation of Materials; Engineering; Mathematical Applications in the Physical Sciences; Mechanical Engineering; Numerical and Computational Physics; Original Paper; Simulation; Solid Mechanics
• ISSN: 2520-8160; 2520-8179
• DOI: 10.1007/s41939-024-00648-4

The three-dimensional electro-osmotic flow of EMHD (Electromagnetohydrodynamic) tangent hyperbolic nanofluid over the stretching rotating disk with porous medium along with the effects of thermal radiation, variable thermal conductivity, chemical reaction and Stefan blowing are examined in this article and performing response surface methodology and sensitivity analysis for three different parameters of magnetic parameter, thermal radiation parameter and electric field parameter to find the optimum heat transfer rate also relative sensitivity was calculated. The equations which are differentiated partially are turned into ordinary equations by consuming the similarity variables also the fifth order Runge–Kutta Fehlberg technique along with the shooting method was used for numerical analysis. Velocity, temperature and concentration profile are graphically presented and discussed in this study. How the dependent variable affected by the various independent variable is analysed by sensitivity analysis in this study. From the evaluation of Response Surface Methodology, a good amount of heat transfer rate of 6.46 is obtained for high level of magnetic and thermal radiation parameter along with low level of electric field parameter. The highest percentage of 91.44% relative sensitivity is obtained for increasing one percent of radiation parameter in medium level. The peculiarity of this study resides in filling the research gap, providing the results for previously unexplored assumptions and considering advanced boundary conditions like Stefan blowing making it valuable and has a major role on biomedical, environmental and industrial applications like paper manufacturing, paper drying, glass blowing, food processing, drug delivery, micro fluidics and cooling electronics.