Modelling of a single confined turbulent slot jet impingement using various k — ϵ turbulence models

Liquid–liquid extraction with chemical reaction in a novel impinging‐jets reactor

“…The first patent for this technique was probably pub-Ž . lished by Carver et al 1956 Mujumdar, 1997a,b, 1995a;Seyedein et al, . 1994 have conducted extensive investigations on the modeling and application of IJ technique in heat-transfer processes.…”

Modeling of data center airflow and heat transfer: State of the art and future trends

“…Commercially available CRAC units typically use 2 blowers without exhaust areas of approximately 0.117 m 2 (1.25 ft 2 ) for a hydraulic diameter based Reynolds number (Re = u D h /ν) of ∼530,000. Recent impinging jet investigations [53][54][55][56][57] have considered target plate distances (H) between 2 to 50 jet nozzle hydraulic diameters (D h ), 2 ≤ H/D h ≤ 50. Based on CRAC exhaust of a single blower, the aspect ratio for RFP data centers between 0.305 m (12 in) to 0.914 m (36 in) is 0.941 ≤ H/D h ≤ 2.82, putting the geometry in the lower range of prototypical studies.…”

“…Based on CRAC exhaust of a single blower, the aspect ratio for RFP data centers between 0.305 m (12 in) to 0.914 m (36 in) is 0.941 ≤ H/D h ≤ 2.82, putting the geometry in the lower range of prototypical studies. The standard k-ε model has been shown to fail for predicting impinging jet velocity profiles, wall shear stress and heat transfer rates, and the previous studies [53][54][55][56][57] use the k-ω model [51] to predict the flow field for Re ≤ 110, 000. The CRAC exhaust Re is well beyond the range of other numerical investigations, requiring the validation of the standard k-ε model for RFP predictions.…”

Invisibly at Risk: Low-Income Students in a Middle- and Upper-Class World

“…Results of numerical simulation of two-dimensional flow field and heat transfer impingement due to a turbulent single heated slot jet discharging normally into a confined channel using both low-Reynolds number and high-Reynolds versions of k-ε models for modeling the turbulent jet flow, were presented by Seyedein et al (1994) [18]. The range of Reynolds number and nozzleto-impingement spacing were from 5000 to 20000 and 2.5 to 7.5 respectively.…”