2016 年 82 巻 1 号 p. 100-105
There are a number of useful fluid flow analysis methods that support designers to design flow channels of engineering products or to design flow channels used in manufacturing processes. It is important to derive better design by the iteration of evaluation and refinement of the design proposal so that the resulting product could achieve the required performance. However, most of the conventional methods are not so efficient that the evaluation and refinement cannot be executed enough. In order to make the evaluation part of the iteration process efficient , our previous paper presented a highly efficient fluid flow analysis method that adopted smoothed particle hydrodynamics (SPH) method, and that accelerated its calculation using graphics processing unit (GPU). Furthermore, in order to support designers more efficiently, this paper presents a new method for flow channel design based on form deformation techniques integrated with the analysis method, which enables the modeling of flow channel shape during simulating the flow behavior in it. In order to confirm the usefulness of the method, it is applied to an example of runner design of die-casting during casting flow simulation.
