E233 密度成層流体中の煙突噴流の可視化法について

概要

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Validating numerical results is one of controversial issues in CFD. Usually, a numerical result is compared with other results, and the validity is discussed. In environmental fluid dynamics, observations have offered important information to investigating a structure of flow field. Therefore, in validating a numerical result, it is advisable to utilize some images from an observation. In dealing with such images, we should pay an attention to optical systems in it's observation system. If the optical effects can be taken into visualizing a numerical result, more accurate comparison will be available. In this study, we investigate the behavior of the smoke emission by moving the small particles according to the local velocity given from a numerical simulation. In order to validate the results, we will add the random velocity to the computed velocity, and try to reproduce the optical effects by using a particle density method and a volume rendering technique.
日本流体力学会の論文
2000-07-25