On the modeling of liquid sprays impinging on surfaces

The aim of the present investigations is the derivation and validation of a new droplet-wall impingement model based on detailed experimental investig ations to calculate near-wall polydisperse spray flows. The derived model i s based on the definition of the value K = root We root Re, which incorpora tes both the kinematic parameters of the impinging droplet relative to the wall and the fluid properties. To test the model against experiments, a rat her simple spray flow configuration was chosen, in order to reveal clearly the advantages and disadvantages. Furthermore, droplet-wall impingement mod els introduced by Naber and Reitz [18] and by Wang and Watkins [34] were im plemented into the code, and the results were compared to the new model.