4.6 Article

Impacts of Stefan blowing and mass convention on flow of Maxwell nanofluid of variable thermal conductivity about a rotating disk

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CHINESE JOURNAL OF PHYSICS
卷 71, 期 -, 页码 260-272

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ELSEVIER
DOI: 10.1016/j.cjph.2021.03.003

关键词

Rotating disk; Maxwell nanofluid; Cattaneo-Christov expressions; Stefan blowing; Mass convection

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This study investigates the incompressible hydromagnetic flow of Maxwell nanofluid driven by a stretchable rotating disk. By utilizing the Buongiorno model and Cattaneo-Christov double-diffusive theory, as well as temperature dependent thermal conductivity, the constitutive equations are established. The governing equations are influenced by Stefan blowing and mass convection effects, with numerical results indicating trends such as decreased radial curves with increasing Deborah number and temperature field decline due to larger thermal relaxation time parameters.
Current study investigates the incompressible hydromagnetic flow of Maxwell nanofluid. The fluid motion is caused by the stretchable rotating disk. Buongiorno model of nanofluid theory is acquired in flow model. Cattaneo-Christov double-diffusive theory along with temperature dependent thermal conductivity is main features of the constitutive equations. The governing equations are influenced by Stefan blowing and mass convection effects. The dimensionalized form of flow equations is obtained by elaborating appropriate similarity functions. The solution of resultant governing system is obtained by Runge-Kutta-Fehlberg (RKF) shooting technique. The results of dimensionless quantities are discussed on flow, concentration and temperature quantities. The graphical representation of Nusselt and Sherwood numbers is also presented against selected physical variables. The numerical results predicted that an increment in Deborah number has the tendency to reduce the radial curves. Temperature field is declined due to enlarge values of thermal relaxation time parameter. Increased thermophoretic parameter resulted into a decrement of Sherwood number. Excellent comparison is established through tabular description to validate the adopted numerical procedure.

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