Numerical Analysis of Jet Impingement Heat Transfer at High Jet Reynolds Number and Large Temperature Difference

Influence of jet temperature and nozzle shape on the heat transfer distribution between a smooth plate and impinging air jets

“…It was reported that Nusselt number and effectiveness are independent of jet and ambient temperature difference. Jensen and Walther [24] numerically investigated jet impingement heat transfer from a round jet for nozzle to plate distance of 2(z/d e ) for the Reynolds number of 166,000 for the temperature difference between jet inlet and wall of 1600 K. It is observed that the turbulent intensity at the nozzle exit affected the stagnation point heat transfer. A correlation is suggested for stagnation point heat transfer with jets Reynolds number and turbulence intensity at nozzle exit.…”

Modelling of temporal and spatial evolution of sulphur oxides and sulphuric acid under large, two-stroke marine engine-like conditions using integrated CFD-chemical kinetics

“…The turbulent flow is modelled using the k-ω SST model. As highlighted in the introduction, both the magnitude and the distribution of the predicted wall heat transfer varied significantly when different wall models were applied [24]. The all y + wall model is employed in the current simulations, in which high and low y + wall models are determined based on the local y + [29].…”

“…The peak temperature in the flame jet can reach above 2700 K while the cylinder liner wall temperature is much lower at approximately 400 K [19]. Based on the steady-state Reynolds-averaged Navier-Stokes (RANS) simulation on heat transfer from combustion gaseous to the piston surface in a large marine engine performed by Jensen and Walther [24], it was found that both the magnitude and the distribution of the predicted wall heat transfer varied significantly when different wall models were applied. This indicates that such calculation was strongly dependent on the empirical models.…”

Application of the Temperature Oscillation Method in Heat Transfer Measurements at the Wall of an Agitated Vessel

“…Persoons et al [12] studied local heat transfer in a pulsating impinging jet for the nozzle-to-surface spacing 1 ≤ h/d ≤ 6, Reynolds numbers 6000 ≤ Re ≤ 14000, and pulsation frequency 0 ≤ f ≤ 55 Hz). Many works also focused on numerical modelling of impinging jets, for example, Draksler et al [13] or Jensen and Walther [14]. Zuckerman and Lior [15] published an extensive review paper on impinging jets summarizing empirical correlations and numerical simulation techniques.…”