... utilizing a single confined air jet impinged on a flat plate using a guiding baffle is implemented. The impacts of Reynolds number ( Re ) ranged from 500 to 5000, guiding baffle diameter-to-nozzle diameter (D/d) of 2, 4, and 6, and guiding baffle height-to-nozzle to impinging plate distance ( h / H ) of 1/3...

...Orhan Yalçınkaya; Ufuk Durmaz; Ahmet Ümit Tepe; Ünal Uysal; Mehmet Berkant Özel In a jet impingement cooling (JIC) system, the layout of the target surface and length of the jet holes can change both the flow field and the heat transfer characteristics. Elliptical-shaped pins (ESPs) with different...

...Liaqat Hussain; Muhammad Mahabat Khan Jet impingement finds an important role in several industrial applications which require high thermal-hydraulic performance of heat exchange systems. The self-exciting sweeping jets produced by fluidic oscillators provide superior thermal and hydraulic...

... 10 2021 08 07 2022 06 10 2022 gas turbine blade leading edge jet impingement variable jet diameter SST k–ω model heat transfer uniformity performance evaluation factor The gas turbine (GT) is one of the most effective power-producing devices that can be used as a power...

...Ritwik V. Kulkarni; Lesley M. Wright This paper provides a detailed experimental investigation of heat transfer and pressure loss for leading edge jet impingement using square-edged, racetrack jets. Experiments were carried out over various parameters: jet-to-jet spacings (s/d) of 2, 4, 8; jet...

... rates represent the relative strength of the pumped flow and the impinged flow. 1 Corresponding author. e-mail:  pbhansa@ncsu.edu e-mail:  kramakr4@ncsu.edu e-mail:  sekkad@ncsu.edu 27 07 2021 20 12 2021 10 02 2022 jet impingement turbine disk rotating disk pin...

... of T/D j = 4.0, at the Reynolds number of 20,000. First, fluidic features are established both in free exit and with impingement, at varying short target spacing (e.g., H/D j ≤ 4.0). Second, thermal characteristics of the jet impingement are elucidated. Results demonstrate that, due to a skewed...

...-mail:  saleemanwar.amu@gmail.com e-mail:  nadhasan@gmail.com 28 03 2021 30 09 2021 09 11 2021 jet impingement thermal buoyancy solutal buoyancy double-diffusive convection POD Those mixers which do not require any external source of energy for mixing are known as passive-mixers...

...Vivek Subramaniam Sambamurthy; Srivatsan Madhavan; Prashant Singh; Srinath V. Ekkad Experimental investigation was carried out to study heat transfer and fluid flow in high porosity (93%) thin metal foams (MFs) subjected to array jet impingement, under maximum and intermediate crossflow exit...

... configurations were designed for the maximum utilization of the foam area for heat transfer and reduced penalty on the pumping power requirement. Three different pore density foams were tested with three different array-jet impingement configurations. The minimum possible thickness for each pore density...

... presented a procedure for solution of three-dimensional (3D) transient conduction equation using alternating direction implicit (ADI) method and an error minimization routine to find accurate HTCs at relatively lower computational cost. Representative cases of a single jet and an array jet impingement under...

...Carlos Zing; Shadi Mahjoob Thermal management has a key role in the development of advanced electronic devices to keep the device temperature below a maximum operating temperature. Jet impingement and high conductive porous inserts can provide a high efficiency cooling and temperature control...

...Sharad Pachpute; B. Premachandran In this paper, heat transfer and effectiveness of a turbulent slot jet impinging over a heated circular cylinder have been investigated numerically by varying the ratio of jet temperature to the ambient temperature, Θ j = T j /T amp , from 0.7 to 1.2. In all cases...

...Matthew J. Rau; Suresh V. Garimella; Ercan M. Dede; Shailesh N. Joshi The overall enhancement in CHF is presented in Fig. 8( b ) relative to the single jet impinging on the baseline smooth flat surface ( q " CHF , SJ , S ) at the same velocity (i.e., volume flow rate...

...G. Nasif; R. M. Barron; R. Balachandar A numerical study of a circular oil jet impinging on a flat disk with uniform wall heat flux was carried out using the VOF method. A fully developed turbulent pipe flow profile was employed at the exit of the nozzle. Large jet length-to-nozzle diameter...

...: Jim A. Liburdy. 24 01 2014 24 06 2014 Confined jet impingement with boiling offers unique and attractive performance characteristics for thermal management of high heat flux components. Two-phase operation of jet impingement has been shown to provide high heat transfer...

.... Tao. 20 05 2013 04 04 2014 A critical heat flux (CHF) correlation is developed for jet impingement boiling of a single round jet on a flat circular surface. The correlation is valid for submerged jets as well as for free surface jets with Reynolds numbers (Re) between 4000...

... , “ Spray Cooling Heat Transfer: The State of the Art ,” Int. J. Heat Fluid Flow , 28 ( 4 ), pp. 753 – 767 . 10.1016/j.ijheatfluidflow.2006.09.003 [4] Garimella , S. V. , and Rice , R. A. , 1995 , “ Confined and Submerged Liquid Jet Impingement Heat Transfer ,” ASME J. Heat Transfer...

... and the relative alignment of pores in successive fins can have a substantial effect on the heat transfer performance. lotus-type porous metal metal foam heat transfer jet impingement heat sink Metal foams are of interest for thermal engineering applications such as heat sinks because...

.... In many device cooling situations, a cooling technique is required not only to provide an enhanced rate of heat transfer, but also to maintain the devices within a narrow range of operating temperatures. In cases where high cooling rates and localized heat dissipation are critical, jet impingement cooling...