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  • Open Access


    Fluid-Structure Coupled Analysis of the Transient Thermal Stress in an Exhaust Manifold

    Liang Yi1,*, Wen Gang1, Nenggui Pan2, Wangui Wang1, Shengshuai Mo1

    FDMP-Fluid Dynamics & Materials Processing, Vol.19, No.11, pp. 2777-2790, 2023, DOI:10.32604/fdmp.2023.021907

    Abstract The development of thermal stress in the exhaust manifold of a gasoline engine is considered. The problem is addresses in the frame of a combined approach where fluid and structure are coupled using the GT-POWER and STAR-CCM+ software. First, the external characteristic curve of the engine is compared with a one-dimensional simulation model, then the parameters of the model are modified until the curve matches the available experimental values. GT-POWER is then used to transfer the inlet boundary data under transient conditions to STAR-CCM+ in real-time. The temperature profiles of the inner and outer walls of the exhaust manifold are… More >

  • Open Access


    A Proposal of Nonlinear Formulation of Cell Method for Thermo-Elastostatic Problems

    C. Delprete1, F. Freschi2, M. Repetto2, C. Rosso1

    CMES-Computer Modeling in Engineering & Sciences, Vol.94, No.5, pp. 397-420, 2013, DOI:10.3970/cmes.2013.094.397

    Abstract The growing necessity of accuracy in analyzing engineering problems requires more detailed and sophisticated models. Those models can include multiphysics interactions, that, sometimes, are highly nonlinear and the application of the superposition principle is then not possible. The cell method can be suitably used to study nonlinear multiphysics problems, because its theoretical framework for the physical laws is intrinsically multiphysics. In this way it is possible to take into account the mutual effects between different physics. Within the cell method framework, the coupling terms can be directly formulated in terms of the global variables used for the solution of the… More >

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