Bödewadt flow of non‐Newtonian fluid with single‐walled TiO2 nanotubes suspensions.

The present study analyzes the boundary layer flow behavior of single‐walled Titania nanotube (SWTNT)–water nanofluid over a rotating disk. The main motivation behind such an investigation is that single‐walled Titania nanotubes (SWTNTs) exhibit significant results due to their extensive applications, low cost, high thermal conductivity, dielectric properties, and photocatalytic activities compared to prevalently existing single‐walled carbon nanotubes. The radial and azimuthal slip conditions are implemented. Fourth order Runge–Kutta method along with the shooting technique is applied to obtain the appropriate numerical solution. The relevant outcomes include the fact that the Casson fluid parameter controls the radial velocity of SWTNT‐water nanofluid and radial and tangential slip parameters exhibit the same trend of radial velocity in the presence of SWTNT in the base fluid. The descending trend of radial velocity is due to a rise in the Casson fluid parameter β $\beta $ in the range 0.1≤β≤10 $0.1\le \beta \le 10$. The ranges of other parameters influencing the flow behavior are 0.1≤ε≤0.9, $0.1\le \varepsilon \le 0.9,$0.1≤L1≤0.5, $0.1\le {L}_{1}\le 0.5,$0.1≤L2≤0.9,0.1≤L3≤0.9,0.1≤L4≤2 $0.1\le {L}_{2}\le 0.9,0.1\le {L}_{3}\le 0.9,0.1\le {L}_{4}\le 2$. The non‐Newtonian fluid model helps in controlling the momentum transfer of SWTNT‐water nanofluid. Boundary layer flow of SWTNT‐water nanofluid due to radial stretching is the novelty of our study. The present work may be extended to the Darcy and non‐Darcy medium, which is beyond the scope of our work. [ABSTRACT FROM AUTHOR]