... studies using active methods for heat transfer enhancement Comparison of various studies using active methods for heat transfer enhancement Authors Range of Re Ferrofluid concentration Range of vibration Magnetic field strength Shahsavar et al [ 37 ] 500–2000 0%–2% 0 m/s 2 –5 m/s...

... location. The average bed temperature, interphase, and bed-to-wall heat transfer coefficient at a location of 10 cm axial height also increase with the cone angle increase up to 10 deg. As a result, the conical riser, when designed with a greater cone angle up to 10 deg, exhibits more efficiency in terms...

... genetic algorithm (MOGA) is used to solve optimization problems, and three-dimensional parametric models for numerical optimization work are examined using the finite volume approach. The flow is steady, incompressible, and turbulent, and heat transfer in the heat sink is represented by conjugate heat...

... 11 2023 25 01 2024 07 03 2024 thermal spray molten alumina micro-obstructions splat heat transfer shrinkage surface roughness solidification shearing splashing In applications involving extreme environments and operating conditions, such as in aeroengines...

... and a shift in the direction of the nozzle displacement. The presence of swirling/recirculating fluid at the trailing end of the cylinder enhances heat transfer near the back end of the cylinder. The separation and the reattachment of the fluid stream differ depending on the Reynolds number, with low Reynolds...

... cooling devices. However, the lack of accurate prediction tools such as heat transfer coefficient correlations and insufficient research studies about the mechanisms controlling heat transfer processes are hindering its practical realization for key energy and cooling systems. The overall objective...

... and heat transfer performance. In this study, Gyroid (G), Diamond (D), and IWP type TPMS-based heat exchangers are constructed in three dimensions. The thermal-hydraulic, entropy production, and flow-induced noise characteristics of TPMS-based heat exchangers are numerically investigated. The results...

...Mark Schepperle; Nima Samkhaniani; Mirco Magnini; Peter Woias; Alexander Stroh Facing discrepancies between numerical simulation, experimental measurement, and theory is common in studies of fluid flow and heat transfer in microchannels. The cause of these discrepancies is often linked...

... ,” Proceedings of CHT-08 ICHMT International Symposium on Advances in Computational Heat Transfer, Begel House , Marrakech, Morocco, May 11 – 16 . [19] Sabbagh , J. A. , and Aly , M. S. , 1993 , “ Interaction of Two-Dimensional Hot Jet and Two-Dimensional Cold Jets ,” AIAA Paper No. 93...

...Fei Li; Chenglan Xiong; Yu Rao; Yong Luan; Bernhard Weigand The paper presents a numerical study of the heat transfer, pressure loss, and flow characteristics of swirl cooling in elliptical tubes, which are compared to the counterpart of swirl cooling in a circular tube with a diameter of D = 50.0...

...Makiko Ando; Atsushi Okamoto; Hiroki Nagai An oscillating heat pipe with check valves (CVOHP) is an attractive heat transfer device for future spacecraft with considerable heat dissipation and ground applications. This study aims to clarify the effect of the flow resistance of floating-type check...

... of expelled air from upstream air jets that increased the heat transfer rate to air and consequently instant thermal backup. Although, the use of wavy PCM unit provides instant and long thermal backup by increasing heat transfer area that augments the heat transfer to air and the collection of solar...

...Dehai Kong; Zhenyuan Ma; Wei Li; Tao Guo; Cunliang Liu A numerical study was conducted on the multiple jet impingement heat transfer of the double-wall cooling with high blockage ratio ribs of various configurations. Three different blockage ratios (BR = 0.2, 0.3, and 0.5) and two rib arrangements...

...Kirttayoth Yeranee; Yu Rao Additive manufacturing enables highly efficient cooling fabrications such as triply periodic minimal surface (TPMS), which provides excellent heat transfer per unit volume. In a wedge-shaped channel representing trailing edge turbine blade cooling, conventional pin fins...

... sensible and latent storage technologies. Novel macroporous latent heat storage units can be used to enhance the limiting convective heat transfer between the heat transfer fluid and the PCM to attain higher power density while maintaining high energy density. 3D monolithic percolating macroporous latent...

...Dawei Zhuang; Faxian Zhou; Guoliang Ding Integral-fin tubes with high heat transfer capability are a promising solution for improving the compactness of condensers used in the exploitation of offshore natural gas at sea, and the sloshing motions including rolling and pitching would inevitably...

... point heat transfer was correlated to the laminar and turbulent regimes in the form of the stagnation point Nusselt number, Nu 0 = CRe m Pr 0.4 , where the exponent m = 0.50 and 0.55, respectively. The Nu 0 –Re relationship exhibited nonmonotonic behavior (decrease) in the transition regime. Two...

... optimization with three different factors and three levels for higher heat transfer coefficient (HTC) and minimum pressure drop based on the Taguchi–Grey method. Computational fluid dynamics (CFD) output is used as an input value for statistical analysis. Results revealed that the PTTI in HX successfully...

...Shailendra Kumar Chaurasiya; Satyender Singh This experimental and numerical investigation is intended to increase heat transfer, reduce pumping power, and present important guidelines on the use of confined submerged air jet impingement in solar air heater designs that employ an array of circular...

...Alex Li; Rui Zhu; Terrence Simon Research results demonstrate the heat transfer effectiveness of an impinging synthetic jet toward cooling a plane normal to it. The utility of the synthetic jet lies in that the supply of coolant comes from the device itself as an alternating jetting flow...