An investigation of the mechanism of acoustic vibrations in swirl flows

Mitrofanova, O. V.; Egortsov, P. P.; Kokorev, L. S.; Kruglov, V. B.; Chernov, A. I.

doi:10.1134/s0018151x10020136

Cited by 7 publications

(3 citation statements)

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“…In [6] it is shown that occurrence of acoustic resonances is associated with the presence of an internal vortical structure in a swirled coolant flow.…”

Section: = ∇ × U ωmentioning

confidence: 99%

“…means that, in the case of helical vortex motion when the rotational velocity vector of a liquid particle pre cesses with regard to the particle's velocity direction, such a motion can be reduced to the equivalent helical motion: where The equation for the vorticity in an incompressible nonconductive fluid has the form (6) The equation that describes the change in the mag netic field induction is also reduced to an analogous form:…”

Section: Vortical Motion In Electroconductive Mediamentioning

confidence: 99%

“…In this case, the configuration of the induced vortex magnetic field in a moving conducting medium depends on the mutual orientation of the helical vor 4.07e+00 3.95e+00 3.84e+00 3.72e+00 3.60e+00 3.49e+00 3.37e+00 3.25e+00 3.14e+00 3.02e+00 2.91e+00 2.79e+00 2.67e+00 2.56e+00 2.44e+00 2.32e+00 2.21e+00 2.09e+00 1.98e+00 1.86e+00 1.74e+00 1.63e+00 1.51e+00 1.39e+00 1.28e+00 1.16e+00 1.05e+00 9.30e+01 8.14e+01 6 Fig. 3.…”

Section: Simulation Of Vortex and Magnetic Fields In Hartmann's Threementioning

confidence: 99%

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Simulation of magnetohydrodynamic effects during large-scale vortices generation in a liquid-metal coolant

2015

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This investigation is aimed at establishing the interrelation between the generation of a large scale vortical motion and magnetohydrodynamic (MHD) effects in liquid metal nuclear power plant coolants. The subjects of the study are three dimensional liquid sodium flows in the presence of an external transverse magnetic field in bent and in rectilinear cylindrical channels with obstacles inside of them with different geometries that generate a large scale vortical motion. To establish the governing dimensionless criteria and their influence on the distribution of the velocity and the magnetic fields, analytical solutions of the Hart mann problem were found to a 2D approximation. A numerical 3D simulation identified the regions of the most intensive induced magnetic field for the 3D Hartmann flow under consideration. The spatial distribu tions of the fields of the velocities, the vorticity, and the magnetic induction are obtained considering the posi tion of the flow disturbance source. A correlation is found between the vortex formation effects in channels with a complex geometry and the fluctuations of the magnetic field induced in the area where the vortical structures are localized on imposition of a static magnetic field.

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“…In [6] it is shown that occurrence of acoustic resonances is associated with the presence of an internal vortical structure in a swirled coolant flow.…”

Section: = ∇ × U ωmentioning

confidence: 99%

Section: Vortical Motion In Electroconductive Mediamentioning

confidence: 99%

Section: Simulation Of Vortex and Magnetic Fields In Hartmann's Threementioning

confidence: 99%

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