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Newtonian heating effect on laminar flow of Casson fluids: Thermal analysis
Author(s) -
Kotha Gangadhar,
Munagala Venkata Subba Rao,
Damerla Vijaya Kumar,
Gorla Rama Subba Reddy
Publication year - 2020
Publication title -
heat transfer
Language(s) - English
Resource type - Journals
eISSN - 2688-4542
pISSN - 2688-4534
DOI - 10.1002/htj.21727
Subject(s) - laminar flow , mechanics , boundary layer , nonlinear system , heat transfer , flow (mathematics) , convergence (economics) , newtonian fluid , computation , thermal , mathematics , momentum (technical analysis) , thermodynamics , materials science , physics , finance , algorithm , quantum mechanics , economics , economic growth
In the present study, free convective, laminar flow of Casson fluid is investigated numerically over a nonlinear stretched sheet to observe the characteristics of heat transfer in the presence of Newtonian heating. Nonlinear differential equations are derived from the present flow by utilizing the appropriate transformations. Thereafter, for the linear stretching case, an exact solution is applied for the momentum equation, and for the nonlinear stretching case, a convergent numerical technique, SRM, is applied. Computations of SRM and exact solutions are displayed through graphs. For various physical parameters, variation in velocity profile is observed by means of numerical computations and presented graphically. For checking the accuracy and convergence of the proposed method, outcomes are validated with the available outcomes in the literature and compared. The outcomes demonstrate that the velocity profile is reduced for the nonlinear stretching parameter effect, and, with increasing Pr , the temperature is decreased and there is a reduction in the thickness of the thermal boundary layer.