The Proceedings of the Fluids engineering conference
Online ISSN : 2424-2896
2013
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0636 DNS of Dynamic Controled Free Jet with Rotational Mode
Toma ONODERAKoichi TSUJIMOTOToshihiko SHAKOUCHIToshitake ANDO
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CONFERENCE PROCEEDINGS FREE ACCESS

Pages _0636-01_-_0636-02_

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Abstract
In order to develop a new mixing procedure, we conduct DNS (direct numerical simulation) of dynamic control for free jet. The inflow velocity of jet is unidirectionally or alternately rotated around streamwise direction. From view of instantaneous vortex structures, it is found that the structures are markedly modulated, compared with the case of the free jet. In addition, in order to estimate the mixing performance, the statistical entropy is calculated. It is found that the mixing efficiency are improved with the alternate rotation than that of the unidirectional rotation case.
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© 2013 The Japan Society of Mechanical Engineers
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