... that travel upward to the cold cap and augment heat transfer from the glass to the cold cap. The CFD model employs the Navier–Stokes equations to solve for the fluctuating flowfield using a rigid body motion dynamic fluid body interaction module. This allows for movement of the floating body in response...

... of long-established empirical correlations in the design of TES systems. This work uses computational fluid dynamics to compute steady-state free convection heat transfer coefficients of sulfur in concentric cylinders at temperatures between 400 K and 600 K. The results show that uneven distributions...

...Hengyu Song; Yan Xia; Guangjie Yuan; Jingcui Li; Tianen Liu; Huaizhong Shi; Yinhong Tang This article conducted a numerical study of composite percussive drilling with consideration of heat transfer between drilling fluid and bottom-hole rock in geothermal drilling, and analyzed influences...

... eddy simulation (LES) model for Reynolds (Re) numbers from 10,000 to 50,000. A total of six different connecting holes were investigated with a smooth and dimpled surface. A partial spherical dimple with two circular holes showed the highest heat transfer, but it has a higher pressure loss penalty...

... geometries they considered in their study. There is three dimple depth to diameter ( δ/D ) ratios are considered, and they are 03, 0.2, and 0.1. The study concluded the deeper dimple depth resulted in higher heat transfer compared to the shallowest one. The study predicts that heat transfer increases...

... are considered as the primary and secondary working fluids, and the twisted tape makes the flow further disturbed so that a larger overall heat transfer coefficient is obtained. The finite volume method has been applied to scrutinize the impacts of Reynolds number as well as the twisting-tape turns number...

... in the temperatures ranging from 25 to 50 °C of and the nano-particles concentrations ranging from 0.125% to 1.5% previously. The presence of nano-particles leads to intensify the pressure descent and heat transfer, simultaneously. Therefore, the second goal was to evaluate the influence of nano-particles...

... echnology . 22 08 2019 15 02 2020 15 02 2020 28 02 2020 desiccant air cooling effectiveness heat transfer performance regenerative evaporative cooler energy conversion/systems energy systems analysis heat energy generation/storage/transfer Utilization of energy...

... simulation (LES) is utilized. Results from the numerical study show a good agreement with the experimental data. From the results, it can be concluded that increasing both Reynolds number and rotational speed is in favor of the heat transfer coefficient enhancement, especially in the turn region...

... deployed. The experimental results have identified the heat input and output as the most influential aspect for both the operation and a possible scale-up of such a TCES system. The decisive parameter for the heat input and output is the heat transfer coefficient between immersed heat exchangers...

... approaches were considered for tracking the buoyancy effect on heat transfer. In the first case, the density ratio was set constant, and the rotational speed was varied. In the second case, the density ratio was changed in the stationary case, and the effect of density ratio was discussed. The range...

... and CFD–DEM models show qualitative accordance and are therefore applied for further investigations. The MFM (as a variation of the TFM) is applied in order to simulate hydrodynamics and heat transfer to immersed objects in a small-scale experimental test rig because the MFM can handle the required small...

...Bengt Sunden; Zan Wu Control of heat transfer is important in wind power systems. In cold climate, the problems of icing and de-icing of the turbine blades need to be handled by efficient heat transfer technologies. Heat-generating components like electric generator, gear box, and frequency...

... burning velocity flame stretch chemically reactive flow combustion flames flow measurement fuel gasification gas mixtures heat transfer hydrogen laminar flow organic compounds syngas velocity measurement 15 01 2011 14 06 2011 06 09 2011 06 09 2011...

... heat transfer parameter is kept constant as the heat exchanger allocation parameter is allowed to vary. The value of the heat exchanger allocation parameter corresponding to the maximum coefficient of performance (COP) is noted. The results are compared to those of a non-Carnot refrigerator...

...N. Hegde; I. Han; T. W. Lee; R. P. Roy Computational simulations of flow and heat transfer in heat recovery steam generators (HRSGs) of vertical- and horizontal-tube designs are reported. The main objective of the work was to obtain simple modifications of their internal configuration that render...

... was shown by comparing the experiments. Furthermore, the formula between Reynolds number and Nusselt number was obtained, which express the heat transfer around the gas hydrate lump. 07 06 2005 19 08 2006 heat transfer flow measurement lattice gas pyrolysis hydrates decomposition...

... refrigeration cycle, interconnected by absorption, separation, and heat transfer processes. The performance was evaluated by both energy and exergy efficiencies, with the latter providing good guidance for system improvement. The influences of the key parameters, which include the basic working solution...

.... As there are humid air and refrigerant single- and two-phase streams involved in the heat transfer process, then there are irreversibilities or exergy destruction, due to pressure losses I ̇ Δ P , due to temperature difference I ̇ Δ T and due to specific humidity gradient I ̇ Δ ω . These principal components...

.... The pressure drop at various sections and the heat transfer coefficients are computed using empirical correlations. Solutions are obtained by using SIMULINK . The model is validated by comparing its steady state and dynamic responses with the actual plant data. Open loop responses of the model to the step...