Effects of transpiration on unsteady MHD flow of an upper convected Maxwell (UCM) fluid passing through a stretching surface in the presence of a first order chemical reaction

Abstract

The aim of this article is to present the effects of transpiration on the unsteady two-dimensional boundary layer flow of non-Newtonian fluid passing through a stretching sheet in the presence of a first order constructive/destructive chemical reaction. The upper-convected Maxwell (UCM) model is used here to characterize the non-Newtonian behavior of the fluid. Using similarity solutions, the governing nonlinear partial differential equations are transformed into ordinary ones and are then solved numerically by the shooting method. The flow fields and mass transfer are significantly influenced by the governing parameters. The fluid velocity initially decreases as the unsteadiness parameter increases and the concentration decreases significantly due to the increase in the unsteadiness. The effect of increasing values of transpiration (suction) and the Maxwell parameter is to suppress the velocity field; however, the concentration is enhanced as transpiration (suction) and the Maxwell parameter increase. Also, it is found that the fluid velocity decreases as the magnetic parameter increases; however, the concentration increases in this case.

Unsteady Flow of Micropolar Maxwell Fluid Over Stretching Surface

“…Table 2 considers a weak concentration ( = 0.5). Finally, Table 3 presents a comparison for − ′′ (0) with Subahs et al [5], Swati et al [9], Hsiao [19], and Sadeghy et al [29]. Table 4 introduces a tabulated data for − ′′ (0) and the modified skin friction at different settings.…”

“…Subahs et al [5] Swati et al [9] Hsiao [19] Sadeghy et al [29] Present results Table 4 shows the effect of in combination with micropolar effect ( = 2). It presents an increase in the modified skin friction in comparison with part 4.…”

“…Furthermore, Shateyi [8] studied the thermophoresis effect in the presence of a chemical reaction in Darcian porous medium. Mukhopadhyay et al [9] presented the effects of transpiration on the unsteady flow in the presence of first-order constructive/destructive chemical reaction. Nadeem et al [10] considered the existence of the nanoparticle.…”

Radiative boundary-layer flow of an MHD Maxwell fluid with non-linear chemical reaction and heat source in a permeable channel

“…From Figs. (10)(11)(12)(13) it is observed that for non-Newtonian fluid f, f' and θ profiles increases and profile decreases with the increase in α. With increase in R, θ profile decreases in suction case and increases in injection case, as shown in figs.…”

“…Prasad et al [10] examined variable thermos-physical properties of UCM fluid. Mukhopadhyay et al [11] analyzed UCM fluid flow with chemical reaction. Palani et al [12] examined UCM fluid flow with non-linear chemical reaction.…”