Comparison of spray/wall impingement models with experimental data

초록

The aim of the study is the comparison of earlier published submodels for the spray impingement and the suggestion of a modified impingement model. The modified model was devised to give better predictions for the upward dispersion of droplets after impingement in diesel engines. The present paper includes two parts, one of which is to analyze the overall structure of impinging sprays and the other to do the internal structure for which the main parameters are the local velocities and mean diameter of droplets. The submodels were investigated to compare the results with the modified model. Numerical results using four different models were compared with several experimental cases for the nonevaporative impinging sprays. As a result, it is found that model 3 and model 4 are acceptable for the predictions of the droplet dispersion normal to the wall.

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