Cattaneo–Christov double‐diffusion model with Stefan blowing effect on copper–water nanofluid flow over a stretching surface

Abstract

We often encounter many processes where the cooling rate is a key factor in deciding the features of a desired product. Due to increasing demands of controlled cooling systems, an effort is made to theoretically study the effect of volume fraction on mixed convective Cu–water nanofluid flow over a stretching surface with activation energy and thermal radiation. The nonlinear dynamical system is simplified using apt similarity variables and the obtained ordinary differential equations are dealt numerically using Runge–Kutta–Fehlberg method and shooting scheme. The thermal and solutal equations are modeled considering Cattaneo–Christov double‐diffusion model. The flow problem is studied considering velocity slip and zero mass flux state at the surface. As a novelty, the present case considers the blowing effect at the surface to study massive species transport during nanofluid flow with Cattaneo–Christov double‐diffusion model. The results show that an increase in strength of thermal radiation increases temperature and buoyancy ratio parameter, thereby escalating the skin friction coefficient. When thermal relaxation parameter changes from 0.001 to 0.005, heat transfer coefficient improves by 24.36%. Furthermore, with the change in value of the blowing parameter from 0.1 to 0.1015, the maximum value concentration of nanoparticles that is attained during the flow is increased by 7.15%.

Numerical analysis of MHD nanofluid flow over a wedge, including effects of viscous dissipation and heat generation/absorption, using Buongiorno model

“…The thermophoresis along with random motion characteristics of radiative Casson fluid flow, including gyrotactic microorganisms driven by a moving wedge, has been acknowledged by Raju et al 6 They found that thermal and concentration profiles are boosted by the escalating value of thermophoresis parameter, whereas Brownian motion parameter showed a reverse trend for the thermal boundary layer. Recently, many researchers have explored the influences of random motion features of nanosized particles and thermophoresis on the flow of nanofluid using Buongiorno's model at different geometries 7–15 . Although, recent years have observed the rise in the number of investigators exploring the flow and heat transfer problems utilizing wedge surfaces due to its assorted feasible functions in the area of manufacturing, high‐speed thermal aerodynamics, fiber technology, nuclear cooling system, and so on.…”

Heat and mass flux through a Reiner–Rivlin nanofluid flow past a spinning stretching disc: Cattaneo–Christov model

“…The innovative feature of this project is the use of a modified Buongiorno type to account for Brownian motion, thermophoresis, and volume fraction for nanofluids. An attempt was undertaken to theoretically explore the influence of volume fraction on a mixed convective Cu-water nanofluid flow across a stretching surface with activation energy and thermal radiation, due to the growing demand for regulated cooling systems 12 . The influences of mixed convection, thermal radiation, and chemical reaction were numerically investigated for the steady Cu-water nanofluid flow in the presence of a magnetic field 13 .…”

Comprehensive examination of radiative electromagnetic flowing of nanofluids with viscous dissipation effect over a vertical accelerated plate

“…Rawat and Kumar 40 studied the copper water nanofluid with the utilization of Cattaneo–Christov heat flux model. The double‐diffusion copper–water nanofluid flow model with the employment of Cattaneo–Christov scheme and Stefan blowing has been discussed by Negi et al 41 . The nanofluid flow over a vertical Riga plate is studied by Sawan et al 42 .…”