List of symbols B 0 Magnetic induction (T) c Constant defined by Eq. (2.8) C f Skin friction coefficient C n Wall couple stress c p Specific heat at constant pressure (J/kg K) f Dimensionless stream function f w Suction/injection parameter g Dimensionless micro rotation h Convective heat transfer coefficient j Microinertia density K Micropolar or material parameter k Thermal conductivity (W/mK) M Magnetic parameter n Constant defined by Eq. (2.5) N Microrotation component Nu x Local Nusselt number Pr Prandtl number q w Surface heat flux (W/m 2) Re x Local Reynolds number T Temperature of the fluid (°C) u w Stretching velocity u, v Velocity components (m/s) v w Mass transfer velocity x, y Dimensionless coordinates Greek symbols α Thermal diffusivity (m 2 /s) γ Conjugate parameter for Newtonian heating δ Spin-gradient viscosity η Similarity variable θ Dimensionless temperature
The crystal structure of procarbazine molecule was predicted using first principles of quantum mechanics. The gas phase optimization was carried out by density functional theory and the resulted geometric coordinates were utilized for the search of hypothetical packings which reveals the possible stable conformers under a repulsion alone potential field with minimum cell volume. The thermodynamically favor structure was resulted from the lattice energy minimization of these hypothetical structures from the using the repulsion-dispersion potential field. The stability of global minimum structure was confirmed from the hydrogen bond interactions and second derivative properties.
A special investigation on the heat transfer by applying viscous dissipation and considering the Newtonian heating condition in magnetohydrodynamic Powell–Eyring fluid has been attempted. It is regarded as the flow in an axisymmetrical direction over a radially stretching surface. The converted governing system of equations is solved to obtain a closed‐form solution using the Keller‐box technique. The skin‐friction coefficient's influence fully developed local Nusselt number is then presented graphically, and temperature profiles are sorted out for the pertinent parameters. The fluid overshoot towards the plate surface with rising magnetic field strength, hence, both the fluid velocity and the hydrodynamic border line layer thickness will fall, though, the skin‐friction coefficient will increase. Various relevant results of the energy indulgence have been discussed from heating and in view of viscous dissipation phenomena. The decision with minimal cases from previous studies in the literature received confirmation of the findings.
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