In this research study, the transient study of heat transfer through a convective-radiative porous fin is carried out considering temperature-dependent thermal conductivity and internal generation. The unsteady Galerkin weighted residuals technique employed to obtain temperatures fin. results indicate that increasing base temperature, generation and, lead increase along consequently higher temp...

The present paper deals with the determination of temperature, displacement and thermal stresses in a circular sector disk defined as 0 ≤ r ≤ a , 0 ≤ φ ≤ φ0 < 2π, 0 ≤ z ≤ h under an unsteady-state temperature field, due to internal heat generation within it. The time dependent heat flux f1(φ, z , t ) is applied on the fixed circular edge (r = a ). For time t > 0, the boundary surfaces at (φ = 0...

In this paper,fluidity onset analysis in FG thick-walled spherical tanks under concurrent pressure loading and heat gradient has been presented. Designing thick-walled spherical tanks under pressure as tanks holding fluids under heat loads with high heat gradients require new approaches. Under high internal pressure and high temperature, the tank enters the plastic stage in a part of its thickn...

In this study, mixed convection heat transfer and local and global entropy generation in aventilated square cavity have been investigated numerically. The natural convection effect isachieved by a constant heat flux imposed at the bottom wall and cooled by injecting a coldfollow. In order to investigate the effect of port location, four different placementconfigurations of the inlet and outlet ...

In the present work, the solution of a non-linear the problem of porous fin with temperature dependent internal heat generation is obtained by means of the Homotopy Perturbation Method. The heat transfer through porous media is simulated using passage velocity from the DarcyâĂŹs model. The results were also compared with Numerical solution in order to verify the accuracy of the proposed method....

Natural convection laminar boundary layer flow from a horizontal circular cylinder with a uniform surface temperature at presence of heat generation has been investigated. The governing boundary layer equations are transformed into a non-dimensional form and the resulting nonlinear systems of partial differential equations are solved numerically applying two distinct methods namely (i) Implicit...

The aim of this work is to review the current status of photovoltaic (PV) power generation, focusing on concentrating PVs mainly as regards their typology, market and state-of-the-art feature. The incorporation of a heat recovery system can increase the overall efficiency by exploiting the waste heat. The proposed solution is a Solar Polygeneration System (PROTEAS System) for the simultaneous p...

The present study carefully examined entropy generation during wustite pellet reduction to sponge iron. The finite volume method was used to solve the governing equations. The grain model was used to simulate the reaction rate. The reactant gases including carbon monoxide and hydrogen were converted to water and carbon dioxide after wustite reduction. Entropy is generated by heat transfer, mass...

A thermodynamic process of power generation has been developed for a gas turbine, a steam turbine, and a compressor, supported by adiabatic expansion or compression processes. Recently, the possible inlet temperature of gas turbines has been increased to 1500°C or more, and the inlet temperature of steam turbines also has been increased to 650°C. At these high-temperature conditions, turbine no...