This paper presents a mathematical model for the prediction of the dynamic characteristics of wall films formed by impinging sprays. The model takes into account the impingement pressure due to bombardment of impinging droplets, tangential momentum transfer resulting from oblique droplet impingement on the film surface, and the gas shear force at the film surface. The general transport equations of mass, momentum and energy for wall film flows are established in the boundary-layer framework. It is shown that this set of equations can be substantially simplified if local equilibrium occurs and a dimensional analysis is performed to identify the conditions for the applicability of the local equilibrium model.Solution of the full film equations is obtained by an efficient hybrid integral/numerical method, which allows numerical calculations to be performed in a two-dimensional framework. An implicit finite volume scheme is employed for this purpose. The methodology is first tested against some simple problems with analytical solutions. Then assessment is performed against several sources of experimental data for films formed by impinging sprays. Satisfactory agreement is obtained.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Mathematical Modelling of Wall Films Formed by Impinging Sprays


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    International Congress & Exposition ; 1996



    Publication date :

    1996-02-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Mathematical Modelling of Wall Films Formed by Impinging Sprays

    Bai,C. / Gosman,A.D. | Automotive engineering | 1996


    Modelling of Wall Films Formed by Impinging Diesel Sprays

    Ryou, Hong Sun / Hong, Kibae / Lee, Seong Hyuk | SAE Technical Papers | 2001


    Modelling of wall films formed by impinging diesel sprays

    Hong,K. / Lee,S.H. / Ryou,H.S. et al. | Automotive engineering | 2001


    2001-01-3228 Modelling of Wall Films Formed by Impinging Diesel Sprays

    Hong, K. / Lee, S. H. / Ryou, H. S. et al. | British Library Conference Proceedings | 2001


    A Study of Sprays Formed by Two Impinging Jets

    Heidmann, Marcus F / Priem, Richard J / Humphrey, Jack C | NTRS | 1957