Computational fluid dynamics (CFD) shape optimization technology is playing an increasingly significant role in the development of products that satisfy various demands, including trade-off relationships. It offers the possibility of designing or improving product shape with respect to a given cost function, subject to geometrical constraints. However, conventional CFD shape optimization technology that uses parametric shape modification has two following issues: (1) expensive computational cost to obtain the final shape, (2) performance variations of the obtained shape depends on the skill or experience of the designer who determined the locations to be modified.In this study, to resolve those problems, an efficient shape optimization technology was developed that uses the adjoint method to perform sensitivity analysis of a cost function on the design parameters. It is composed of a combination of topology optimization and surface geometry optimization. Firstly, topology optimization is used to roughly derive a base shape in the constrained design space. Next, surface geometry optimization is used to further modify the base shape according to the sensitivity distributions of the cost function to each vertex on the surface geometry. This technology was then applied to the design of an engine intake port. The cost function was defined as the balance between maximizing the intake flow rate and in-cylinder tumble moment. As a result, topologically optimized shapes with various performance aspects according to the weighting factor of the cost function were obtained. Then, the topologically optimized shapes were fine-tuned by surface geometry optimization.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Development of CFD Shape Optimization Technology using the Adjoint Method and its Application to Engine Intake Port Design


    Additional title:

    Sae Int. J. Engines


    Contributors:

    Conference:

    SAE 2013 World Congress & Exhibition ; 2013


    Published in:

    Publication date :

    2013-04-08


    Size :

    10 pages




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Shape Optimization of Engine Intake Port by Using Adjoint Method

    Tokuda, S. / Kubota, M. / Sakamoto, H. et al. | British Library Conference Proceedings | 2011


    Development of CFD Shape Optimization Technology using the Adjoint Method and its Application to Engine Intake Port Design

    Tokuda, S. / Kubota, M. / Noguchi, Y. et al. | British Library Conference Proceedings | 2013


    Multi-Objective Adjoint Optimization of Intake Port Geometry

    de Villiers, E. / Othmer, C. / Society of Automotive Engineers | British Library Conference Proceedings | 2012


    Multi-Objective Adjoint Optimization of Intake Port Geometry

    Othmer, Carsten / de Villiers, Eugene | SAE Technical Papers | 2012


    Optimization of intake port design for SI engine

    Qi, Y. L. / Dong, L. C. / Liu, H. et al. | Online Contents | 2012