Modern engine architectures need compact designs driven by vehicle package constraints. Furthermore, an engine should fit into several vehicle applications and parts have to be modified to match all package configurations. The optimization of the individual parts and the system by Computational Fluid Dynamics (CFD) may help to minimize or even delete these drawbacks. Meanwhile, there are several powerful optimization methods for three-dimensional flows on the market. While comparing their strengths and weaknesses, efficiency and easy handling are also important for engineers in research and product development. In this paper, a combined optimization strategy using CFD topology optimization followed by a shape optimization is presented using the software tools Tosca Fluid and STAR-CCM+.
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