B14-062 INDUSTRIAL APPLICATIONS OF LARGE EDDY SIMULATIONS PRESENT STATUS AND ITS FUTURE
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概要
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A numerical method for the prediction of an unsteady fluid flow in a complex geometry that involves moving boundary interfaces is presented in this paper. Particular emphases are placed on computation of unsteady internal flows in turbomachinery and that of aeroacousitcs sound that is generated from turbulence. In order to deal with a moving boundary interface in the flow field, a form of the finite-element method in which overset grids are applied from multiple dynamic frames of reference has been developed. The method is implemented as a parallel program by applying a domain-decomposition programming model. It is now becoming tractable to compute aeroacoustics sound that is generated from relatively large-scale fluctuations in fluid flow, such as rotor-stator interaction and large separations from bluff bodies. One of the future directions in this field for research is computation of small-scale turbulence fluctuations such as the one in turbulent boundary layer and predictions of the resulting high-frequency sound.
- 一般社団法人日本機械学会の論文
- 2003-11-30
著者
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KATO Chisachi
Institute of Industrial Science, The University of Tokyo
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Kato Chisachi
Institute Of Industrial Science The University Of Tokyo
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