In the first part of this study, a one-dimensional code was used to compare predictions from six different two-equation turbulence models. It is shown that the application of the traditional k-ε models to the viscous-dominated region of the boundary layer can produce errors in both the calculated heat flux and surface friction. A low-Reynolds-number model does not appear to predict similar non-physical effects.A new one-dimensional model, which includes the effect of compression, has been formulated by multiparameter fit to the numerical solution of the energy equation. This model can be used in place of the law-of-the-wall to calculate the surface heat flux.The experiments were performed in a specially-instrumented engine, allowing optical access to the clearance volume. Measurements of heat flux, swirl velocities, and momentum boundary layer thickness were made for different engine speeds. Comparison of the model predictions with the results from the experiment showed good agreement.


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    Titel :

    Heat Transfer Predictions and Experiments in a Motored Engine


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Foster, David E. (Autor:in) / Martin, Jay K. (Autor:in) / Yang, Jialin (Autor:in) / Pierce, Philip (Autor:in)

    Kongress:

    1988 SAE International Off-Highway and Powerplant Congress and Exposition ; 1988



    Erscheinungsdatum :

    01.09.1988




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Heat transfer predictions and experiments in a motored engine

    Yang,J. / Pierce,P. / Martin,J.K. et al. | Kraftfahrwesen | 1988


    Heat transfer measurements in a motored engine

    Yamada,S. / Paulsen,H. / Farrell,P. et al. | Kraftfahrwesen | 1989


    Heat Transfer Measurements in a Motored Engine

    Paulsen, Hallvard / Farrell, Patrick / Yamada, Shuichi | SAE Technical Papers | 1989


    Heat Transfer in the Cylinder of a Motored Reciprocating Engine

    Pinfold, D. / Annand, W. J. D. | SAE Technical Papers | 1980


    Heat Transfer Measurements in a Motored Engine Using Speckle Interferometry

    Verhoeven, Dean D. / Farrell, Patrick V. | SAE Technical Papers | 1987