Currently, the heat transfer equation used in the rotary combustion engine CRCE) simulation model is taken from piston engine studies. These relations have been empirically developed by the experimental input coming from piston engines whose geometry differs considerably from that of the RCE. The objective of this work was to derive equations to estimate heat transfer coefficients in the combustion chamber of a RCE. This was accomplished by making detailed temperature and pressure measurements in a direct injection stratified charge (DISC) RCE under a range of conditions. For each specific measurement point, the local gas velocity was assumed equal to the local rotor tip speed. Local physical properties of the fluids were then calculated. Two types of correlation equations were derived and are described in this paper. The first correlation expresses the Nusselt number as a function of the Prandtl number, Reynolds number, and characteristic temperature ratio; the second correlation expresses the forced convection heat transfer coefficient as a function of fluid temperature, pressure, and velocity.


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    Titel :

    Regressed Relations for Forced Convection Heat Transfer in a Direct Injection Stratified Charge Rotary Engine


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Lee, Chi M. (Autor:in) / Schock, Harold J. (Autor:in)

    Kongress:

    SAE International Congress and Exposition ; 1988



    Erscheinungsdatum :

    01.02.1988




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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    Lee,C.M. / Schock,H.J. / NASA,Lewis Research Center,US et al. | Kraftfahrwesen | 1988


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    Jones,C. / Curtiss-Wright,Wood-Ridge,US | Kraftfahrwesen | 1981



    Estimation of Instantaneous Heat Transfer Coefficients for a Direct-Injection Stratified-Charge Rotary Engine

    Lee, C. M. / Lu, C. Y. / Addy, H. E. et al. | SAE Technical Papers | 1987


    A Study of Direct-Injection Stratified-Charge Rotary Engine

    Kagawa, R. / Okazaki, S. / Somyo, N. et al. | British Library Conference Proceedings | 1992