The effect of entropy optimization on an axisymmetric Darcy–Forchheimer Powell–Eyring nanofluid flow caused by a horizontally permeable stretching cylinder, as well non-linear thermal radiation, was investigated in this research work. leading equations the current problem were changed into ODEs exhausting appropriate transformations. To deduce reduced system, numerical method bvp4c used. outcom...

The present paper aims to analyze the thermal convective heat transport and generated irreversibility of water-Cu-Al2O3 hybrid nanosuspension in an odd-shaped cavity. side walls are adiabatic, internal external borders enclosure isothermally kept at high low temperatures Thand Tc, respectively. control equations based on conservation laws formulated dimensionless form worked out employing Galer...

The entropy generation analysis of fully turbulent convective heat transfer to nanofluids in a circular tube is investigated numerically using the Reynolds Averaged Navier–Stokes (RANS) model. The nanofluids with particle concentration of 0%, 1%, 2%, 4% and 6% are treated as single phases of effective properties. The uniform heat flux is enforced at the tube wall. To confirm the validity of the...

This work compares a theoretical model with consolidated numerical related to the thermodynamic performance of boehmite alumina nanoparticles in different formats counterflow double pipe heat exchanger. The shapes non-spherical under analysis are platelets, blades, cylindrical, and bricks. second law thermodynamics is applied determine Nusselt number, pressure drop, thermal efficiency, viscous ...

This study explores the influence of an inclined magnetic field and variable viscosity on entropy generation in steady flow a couple stress fluid channel. The walls channel are stationary non-isothermal. is driven due to pressure gradient gravitational force. Reynold’s model for temperature-dependent was used. dimensionless, non-linear coupled equations momentum energy solved, we obtained analy...

Natural convection in an inclined rectangular cavity filled with air is numerically investigated. The cavity is heated and cooled along the active walls whereas the two other walls of the cavity are adiabatic. Entropy generation due to heat transfer and fluid friction has been determined in transient state for laminar natural convection by solving numerically: the continuity, momentum and energ...

Effect of temperature-dependent viscosity on fully developed forced convection in a duct of rectangular cross-section occupied by a fluid-saturated porous medium is investigated analytically. The Darcy flow model is applied and the viscosity-temperature relation is assumed to be an inverse-linear one. The case of uniform heat flux on the walls, i.e. the H boundary condition in the terminology o...

The application aims to determine the thermal and hydraulic performance of externally finned, counter-flow, Shell, Tube Heat Exchangers (STHE). refers cooling machine oil flowing in annular region, including non-spherical cylindrical nanoparticles Boehmite Alumina. inlet temperature is equal 80 °C. Sea water a coolant with an 20°C. main parameter optimization process number finned tubes used fo...

The two-dimensional, time-independent conjugate natural convection flow and entropy generation are numerically investigated in three different cases of a wavy conducting solid block attached to the left wall square cavity. A hybrid nanofluid with titania (TiO2) copper (Cu) nanoparticles base fluid water part is considered presence uniform inclined magnetic field. leftmost cavity hot one rightmo...