... temperature of 450 K, is allowed to cool using ambient air, whose temperature is 300 K. The combined influence of free convection and radiation heat transfer has been considered here. Independent parameters such as Aspect Ratio (D/d) of 2.5,5,7.5; Rayleigh number for the laminar regime in the range of 10 3...

...Prashant Singh; Youssef Aider; Mantha S. Phanikumar; Roop L. Mahajan This paper presents the convective heat transfer coefficient of cubic lattices under both buoyancy-induced and forced convection. Additionally, it examines the effective thermal conductivity, permeability, and inertial coefficient...

... at the measurement point, and the lateral convection losses around the device. The mathematical model is solved using a numerical approach based on the finite element method (FEM) to obtain the temperature distribution over the entire measurement device. This temperature field is generated by the passage of electric...

... sand mixed into hydrophilic sand. The sand–water mixtures experienced forced convection above and through the sand layer, while a simulated solar flux (i.e., 112±20 W/m 2 ) was applied. Evaporation from homogeneous porous media is classified into the constant-rate, falling-rate, and slow-rate periods...

... the impact of intersurface radiation between the target plate and confined surfaces on the overall cooling performance, three emissivity values ( ε = 0.05, 0.5, and 0.95) are taken into consideration. Additionally, simulations are done for the pure convective heat transfer, ignoring intersurface radiation...

... analyzes the nonlinear sublimation process driven by convective heat/mass transfer and evaporation of water vapor using the Legendre wavelet collocation method (LWCM). Results from the present work are shown to be in excellent agreement with the exact solution of the special case of a linear problem...

...S. Corasaniti; P. Coppa; M. Potenza; G. Bovesecchi Four probes for measuring thermal conductivity, thermal diffusivity, and convection heat transfer coefficient were designed, built, and tested. In two of these probes (SP-1 and SP-2), three thermocouples were placed at 25%, 50%, and 75...

...Y. Haseli; G. F. Naterer This article presents new semi-analytical solutions for transient heat conduction in a slab, which exchanges heat at the surface with its surroundings via convection, radiation, or simultaneous convection–radiation mechanisms. The concept of thermal penetration depth...

...Raoudha Chaabane; Abdelmajid Jemni; Patrick Perré Free convection heat transfer and flow characteristics in an open-ended enclosure occupied with fluid saturated porous media are highlighted in this paper. All numerical investigations are achieved using the mesoscopic approach thermal Lattice...

...Subrat Garnayak; Subhasisa Rath For the very first time, this study attempts to address the heat dissipation from an isothermal ribbed sphere under the action of pure natural convection. Semicircular ribs of different radii are superimposed azimuthally on the outer surface of a sphere. The addition...

...Yousef M. F. EL Hasadi; J. M. Khodadadi Development of the solid–liquid interface, distribution of the particle concentration field, as well as the development of thermosolutal convection during solidification of colloidal suspensions in a differentially heated cavity are investigated...

... pistons. oil-jet jet cooling piston heat transfer engine pistons convection Driven by the continuous demand for improvement in fuel economy, the average engine size has been progressively decreasing, and consequently the power density of engines has been progressively increasing to meet...

... February 12, 2014. Assoc. Editor: D. K. Tafti. 03 06 2013 20 11 2013 A new all-time model is developed to predict transient laminar forced convection heat transfer inside a circular tube under arbitrary time-dependent heat flux. Slug flow (SF) condition is assumed for the velocity...

... cooling channel convection infrared thermography ribbed channel thermal boundary condition Both numerical and experimental investigations of heat transfer enhancing cooling geometries should reproduce the thermal boundary conditions that reflect the application environment. Most studies do...

... of temperature [ 16 , 17 ]. The numerical heat and mass transfer analysis of the reacting heterogeneous medium is based on volume-averaged mass and energy conservation equations that couple radiative, conductive and convective heat transfer modes as well as the advection and diffusion of mass...

... strip mill of a steel plant. The current heat transfer analysis shows that surfactant added water jet produces higher heat flux than the pure water jet due to the higher forced convection cooling area. Dissolved surfactant increases the transition boiling heat flux, nucleate boiling heat flux...

... 2010 07 07 2012 A meshless method is used in a projection-based approach to solve the primitive equations for fluid flow with heat transfer. The method is easy to implement in a matlab format. Radial basis functions are used to solve two benchmark test cases: natural convection...

... a microcantilever beam by employing the thermal resistance network. At low pressures, the convective heat transfer coefficient is a function of pressure, as expected from free-molecular theory. As the pressure passes 40 kPa, the heat transfer coefficient goes to a constant value of 1250 W/m 2 K [( 21...

... to assess the convection effects, and a criterion for thermal conductivity measurements was obtained for water flowing in a circular tube. 15 03 2011 12 03 2012 27 06 2012 29 06 2012 convection liquid thermal conductivity measurement thermal wave three omega method...

... number, and surface-emissivity, on the convective, radiative, and total Nusselt numbers, are analyzed for 100 ≤ Re d ≤ 900, 1 ≤ H ≤ 8, 0.1 ≤ N RF,d ≤ 2, 0.01 ≤ Ri d ≤ 10, and 0.05 ≤ ɛ ≤ 0.85. It was found that the radiation-flow interaction parameter was most influential in affecting the radiative...