Impact of third-grade nanofluid flow across a convective surface in the presence of inclined Lorentz force: an approach to entropy optimization

• Published in: Journal of thermal analysis and calorimetry Vol. 144; no. 5; pp. 1935 - 1947
• Main Authors: Loganathan, K., Mohana, K., Mohanraj, M., Sakthivel, P., Rajan, S.
• Format: Journal Article
• Language: English
• Published: Cham Springer International Publishing 01.06.2021; Springer; Springer Nature B.V
• Subjects: Analytical Chemistry; Biot number; Chemistry; Chemistry and Materials Science; Computational fluid dynamics; Concentration gradient; Entropy; Fluid flow; Fluid friction; Hartmann number; Heat; Heat flux; Heat generation; Heat transfer; High temperature effects; Inorganic Chemistry; Lorentz force; Magnetic fields; Mass transfer; Measurement Science and Instrumentation; Nanofluids; Nonlinear systems; Optimization; Physical Chemistry; Polymer Sciences; Radiation; Radiation effects; Relaxation time; Suction; Temperature profiles; Thermal radiation; Thermal relaxation; 3rd-grade nanofluid; Thermal radiation; Inclined magnetic field; Entropy generation; Cattaneo–Christov heat flux (CCHF) model
• ISSN: 1388-6150; 1588-2926
• DOI: 10.1007/s10973-020-09751-3

The current article deals with heat transfer and entropy generation analysis using Cattaneo–Christov heat flux (CCHF) for a flow of third grade nanofluid toward stretchable sheet with inclined magnetic field effects. Thermal radiation, heat generation/absorption, and convective heating effects are considered. Further entropy generation for fluid friction with inclined magnetic field, heat and mass transfer is calculated. This research is specially investigated for the impact of radiation effects using the CCHF model with entropy generation subject to distinct flow constants. Similarity transformations are used to reduce nonlinear PDE to a set of nonlinear ODE systems. The impact of suitable flow constants on the velocity, entropy generation, Bejan number, concentration, and temperature profiles are discussed. The coefficient of mass gradient and temperature gradient is calculated. Entropy generation and Bejan number profiles show the reverse effect on the larger thermal relaxation time parameter. Moreover, entropy of the system is found to be improving with the radiation constant, Biot number, suction/injection constant, Hartmann number and Brinkman number.