The Influence of Dual Lateral Jets on Flow Characteristics in the Conduit

To investigate the effects of employing dual transverse jets on the jet outlet in jet pre-cooling technology, a study was conducted on how different nozzle arrangements and jet parameters influence the heat transfer characteristics within the flow channel. The jet flow channel was simplified, and a mathematical model was established to calculate the pre-cooling spray characteristics between the dual nozzles inside the jet flow channel. Using this model, the pre-cooling effect was simulated and tested. The results indicate that a minimal nozzle spacing leads to excessively high temperatures in the central region, while overly large spacing increases pressure losses and weakens turbulence intensity. An optimal intermediate nozzle spacing significantly reduces the overall temperature within the flow channel and promotes a uniform temperature distribution. Additionally, increasing the offset distance between nozzles decreases the temperature gradient but results in a decline in local heat transfer efficiency.