...Robert L. McMasters; Filippo de Monte; Giampaolo D'Alessandro; James V. Beck Analytical solutions for thermal conduction problems are extremely important, particularly for verification of numerical codes. Temperatures and heat fluxes can be calculated very precisely, normally to eight or ten...

...; published online May 14, 2019. Assoc. Editor: Antonio Barletta. 31 07 2018 09 04 2019 transient thermal analytical verification Thermal conduction problems have been solved analytically for many years, normally by applying the appropriate boundary conditions to the classical...

... technology Heat exchangers Heat transfer Internal flow Thermal Thermoacoustics Increased pressure ratios and combustion temperatures of modern gas turbine engines pose cooling issues for turbine blades (Table 1 ). Many current engines flow cooling air through channels inside turbine blades...

.... , 1959 , “ Transient Temperatures Attained in Disc Brakes ,” Br. J. Appl. Phys. , 10 , pp. 339 – 340 . 10.1088/0508-3443/10/7/311 [4] Majcherczak , D. , Dufrenoy , P. , and Nait-Abdelaziz , M. , 2005 , “ Third Body Influence on Thermal Friction Contact Problems: Application...

...Xinwei Wang Thermal and thermomechanical phenomena in laser metal interaction are of great importance in terms of understanding the underlying mechanisms in laser materials processing, optimizing the efficiency of laser micro-machining, and minimizing laser induced damage. In this work, Molecular...

...F. J. Diez; L. P. Bernal; G. M. Faeth The self-preserving properties of round turbulent thermals, puffs, starting plumes and starting jets, in unstratified and uniform crossflow, were investigated experimentally. The experiments involved dye-containing fresh water (for nonbuoyant flows) and salt...

... for thermals comprising cylinders having the same cross-sectional areas as the source exit and lengths of 50–382 source diameters, and streamwise flow penetration lengths up to 110 source diameters and 5.05 Morton length scales from the source. Near-source flow properties varied significantly with source...

...G. Hetsroni, Fellow ASME; A. Mosyak; Y. Talmon; A. Bernheim-Groswasser; J. L. Zakin The thermal pattern on a heated wall was studied for the flow of water and drag-reducing surfactant solutions in a channel. The wall of the channel was made of a thin foil, which was heated by direct current...

... in enhancing heat transfer required for present age technology. The present investigation goes detailed into investigating the increase of thermal conductivity with temperature for nano fluids with water as base fluid and particles of Al 2 O 3 or CuO as suspension material. A temperature oscillation technique...

...S. Sunil Kumar; K. Ramamurthi The effect of surface roughness, waviness and flatness deviations on thermal contact conductance is predicted. Threshold values of the surface parameters which do not adversely influence thermal contact conductance are determined. Flatness deviations less than ten...

... stagnation flow flow instability forced convection Analytical Boundary Layer Conjugate Flow Forced Convection Heat Transfer High Temperature Impingement Inverse Jets Laminar Thermal Turbulence Unsteady Impinging jets are often used where high rates of heat transfer...

... Microwave Modeling Numerical Methods Thermal The microwave heating of layered materials has been studied by many investigators, including Etternberg 1 , Gori et al. 2 , Nikawa et al. 3 , Ayappa et al. 4 and Lin and Ghandhi 5 . Although most previous investigations are deplete with numerical...

... and the mold are usually hot and transfer the heat to the moving resin. In this paper, we carried out an experimental investigation to validate the importance of heat dispersion in RTM and the local thermal equilibrium assumption during the non-isothermal mold filling process. In addition, we have developed...

...Z. Al-Qodah, Assistant Professor; M. Al-Busoul, Assistant Professor Five different magnetic particles have been used to investigate the effect of a transverse magnetic field on the thermal behavior of a gas fluidized bed, with an immersed heating spherical surface. The effects of gas superficial...

...S. S. Sazhin; V. A. Gol'dshtein; M. R. Heikal Newton's law of cooling is shown to underestimate the heat flux between a spherical body (droplet) and a homogeneous gas after this body is suddenly immersed into the gas. This problem is rectified by replacing the gas thermal conductivity...

... is the thermal conductivity of the outer shell, and R 3 is the outer radius of the cylinder. The matching condition is at R 2 where the temperatures of the outer and inner shells must be equal. Solving Eqs. ( 1 ) and ( 3 ) with the appropriate boundary conditions, the temperature...

... the assumption of local thermal equilibrium. Models for the thermal dispersion conductivity, k d , and the interstitial heat transfer coefficient, h sf , are postulated based on physical arguments. The empirical constants in these models are determined by matching the numerical results with the experimental data...

... and developed. Better manufacturing tolerances, lower defects, and an improved understanding of card and enclosure effects have been attained and shown to be critical to achieving the desired thermal performance. Advanced internal thermal enhancements, encompassing high thermal conductivity adhesives...

... of a plate and the influence of the thermal relaxation time and elastic parameter of the fluid on the velocity field are investigated. The structure of the waves in the temperature and velocity fields is presented. An anomalous behavior of the medium is characterized by infinite or negative values...