Impact of non-Fourier heat flux in bidirectional flow of carbon nanotubes over a stretching sheet with variable thickness

Three-dimensional stretched flow of carbon nanotubes with variable thickness is examined. Christov proposed non-Fourier heat flux to capture impact of thermal relaxation time. Suitable transformations are used to obtain nonlinear ordinary differential systems. Convergent series solutions are derived. Influence of certain variables on the fluid properties is discussed. Findings demonstrate that the magnitude of the surface drag force is suppressed with increment in wall thickness parameter whereas it intensified for increasing nanoparticles volume fraction. Increase in the shape parameter and nanoparticles volume fraction enhanced the flow. Temperature is noticed higher with an increase in thermal relaxation time.