Temperature cycling is a major load for all automotive heat exchangers. A simulation method based on coupled fluid structure simulation was developed to analyze the thermal cycle behavior of the heat exchanger even in an early phase of the development process. The method is based on the modeling of transient heat transfer from the coolant and the air to the solid parts as well as heat conduction in the solid structure. In a first step, the temperature transients are simulated with Computational Fluid Dynamics (CFD). In a second step, the temperature distribution at specified time steps is mapped to a Finite Element Model (FEM) used for structural analysis. Compared with measurements, all relevant physical phenomena are well predicted in the simulations. This method helps to get a better understanding of the basic failure mechanisms. Finally, the calculated local stress values are the basis for subsequent lifetime prediction based on component Wöhler (S-N) curves or fatigue software tools.


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    Titel :

    Virtual Temperature Cycle Testing of Automotive Heat Exchangers by Coupled Fluid Structure Simulation


    Weitere Titelangaben:

    Sae Int. J. Mater. Manf
    Sae International Journal of Materials and Manufacturing


    Beteiligte:
    Brotz, Friedrich (Autor:in) / Kühnel, Wolfram (Autor:in) / Chen, Yang (Autor:in)

    Kongress:

    SAE World Congress & Exhibition ; 2008



    Erscheinungsdatum :

    2008-04-14


    Format / Umfang :

    6 pages




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch





    2008-01-1210 Virtual Temperature Cycle Testing of Automotive Heat Exchangers by Coupled Fluid Structure Simulation

    Brotz, F. / Kuhnel, W. / Chen, Y. | British Library Conference Proceedings | 2008


    AUTOMOTIVE GAS TURBINE HEAT EXCHANGERS

    JOHNSON, ROBERT C. | SAE Technical Papers | 1956


    Progress in aluminium automotive heat exchangers

    Tomlinson, J. | Tema Archiv | 1974


    Zinc Brazing of Automotive Aluminum Heat Exchangers

    Morley, E. J. / Syslak, M. | SAE Technical Papers | 1993