2011 2(7)

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Dekterev A.A., Dekterev A.A., Dekterev D.A., Shtork S.I.

Institute of Thermophysics SB RAS, Novosibirsk, Russia


Dekterev, A.A., Dekterev, A.A., Dekterev, D.A. and Shtork, S.I., (2011) A numerical simulation of unsteady vortex phenomena, Modern Science: Researches, Ideas, Results, Technologies, Iss. #2(7), PP. 108 - 111.


swirled flows; precession of the vortex core; DES simulation


The paper is devoted to a numerical simulation of unsteady flow regimes in the model of vortex chamber with the formation of the precessing vortex core phenomenon (PVC). The possibility of predicting the precession frequency allows avoiding undesired operation modes of some technical applications. Calculated geometry of the camera is identical to the geometry of the experimental set-up, which is constructed in the Institute of Thermophysics in Novosibirsk. The geometry allows to study the problem of vortex formation in the canonical conditions. During the work it was found that using of detached eddy simulation (DES) method allows to predict the behavior of high swirl number flows with sufficiently high quality. The simulation results are compared with the number of experimental data including the PIV data.


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