In this paper, the heat transfer characteristics of a circular air jet vertically impinging on a flat plate near to the nozzle (, where is the nozzle-to-target spacing and is the diameter of the jet) are numerically analyzed. The relative performance of seven turbulent models for predicting this type of flow and heat transfer is investigated by comparing the numerical results with available benchmark experimental data. It is found that the shear-stress transport (SST) model and the large Eddy simulation (LES) time-variant model can give better predictions for the performance of fluid flow and heat transfer; especially, the SST model should be the best compromise between computational cost and accuracy. In addition, using the SST model, the effects of jet Reynolds number (Re), jet plate length-to-jet diameter ratio , target spacing-to-jet diameter ratio , and jet plate width-to-jet diameter ratio on the local Nusselt number (Nu) of the target plate are examined; a correlation for the stagnation Nu is presented.
Numerical Study on Stagnation Point Heat Transfer by Jet Impingement in a Confined Narrow Gap
- Views Icon Views
- Share Icon Share
- Search Site
Zu, Y. Q., Yan, Y. Y., and Maltson, J. (June 25, 2009). "Numerical Study on Stagnation Point Heat Transfer by Jet Impingement in a Confined Narrow Gap." ASME. J. Heat Transfer. September 2009; 131(9): 094504. https://doi.org/10.1115/1.3139183
Download citation file: