AUTHOR=Hussain Arafat , Iqbal Zahoor , Abdelmohimen Mostafa A. H. , Guedri Kamel , Tag-eldin Elsayed , Yassen Mansour F. TITLE=Energy transport features of Oldroyd-B nanofluid flow over bidirectional stretching surface subject to Cattaneo–Christov heat and mass fluxes JOURNAL=Frontiers in Energy Research VOLUME=Volume 10 - 2022 YEAR=2022 URL=https://www.frontiersin.org/journals/energy-research/articles/10.3389/fenrg.2022.985146 DOI=10.3389/fenrg.2022.985146 ISSN=2296-598X ABSTRACT=By Considering the Cattaneo-Christov approach together with Buongiorno's model, the thermal transport model is formulated for the flow of Oldroyd-B nanofluid flow over a bidirectional stretching surface. The flow profile of Oldroyd-B nanofluid is examined for various physical parameters and effects of heat source/sink are also utilized to explore the thermal transport properties subject to thermal relaxation time. Governing mathematical models are developed on the basis of basic laws and presented in the form of PDE's. Considering suitable dimensionless transformation, governing partial differential equations (PDEs) are transformed into ordinary differential equations. Homotopy method is applied to study the feature of heat and velocity components in fluid flow. Influence of each physical parameter over thermal and concentration profile is displayed graphically. It is notices that thermal transport is decreasing for increment in thermal relaxation time. The mass transfer becomes weak for magnifying values of stretching strength parameter. Moreover, the larger thermophoretic parameter regulates the heat transfer during fluid flow.