Journal
JOURNAL OF MOLECULAR LIQUIDS
Volume 234, Issue -, Pages 444-451Publisher
ELSEVIER
DOI: 10.1016/j.molliq.2017.03.077
Keywords
Cattaneo-Christov theory; Variable sheet thickness; Chemical reaction; Variable thermal conductivity; Double stratification
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This attempt reports the influence of variable thermal conductivity over an impermeable surface stretching in a nonlinear manner. Flow formulation is developed considering stagnation point and rheological expressions of second grade liquid. Different from the traditional literature, a new concept of heat flux covering paradox of heat conduction is imposed. Such concept has been used in view of Cattaneo-Christov theory. Besides this first order chemical reaction and double stratification are also considered. The subjected problems are modeled first and then non-dimensionalized. Computations for highly nonlinear problems are presented. The derived expressions are acceptable for convergence. Velocity, temperature, concentration, skin friction and Sherwood number are described through graphs for meaningful discussion considering important variables. Our computed analysis reveals that impacts of local second grade parameter and ratio of velocities have similar behavior on velocity distribution. Moreover the consideration of variable thermal conductivity improves the temperature and associated thermal boundary layer thickness. (C) 2017 Elsevier B.V. All rights reserved.
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