Electromagnetic flow control of a bifurcated jet in a rectangular cavity. Kalter, R., Tummers, M., Kenjere?, S., Righolt, B., & Kleijn, C. International Journal of Heat and Fluid Flow, 2014. abstract bibtex The effect of Lorentz forcing on self-sustained oscillations of turbulent jets (Re=3.1?103) issuing from a submerged bifurcated nozzle into a thin rectangular liquid filled cavity was investigated using free surface visualization and time-resolved particle image velocimetry (PIV). A Lorentz force is produced by applying an electrical current across the width of the cavity in conjunction with a magnetic field. As a working fluid a saline solution is used. The Lorentz force can be directed downward (F L < 0) or upward (F L > 0), to weaken or strengthen the self-sustained jet oscillations. The low frequency self-sustained jet oscillations induce a free surface oscillation. When F L < 0 the amplitude of the free surface oscillation is reduced by a factor of 6 and when F L > 0 the free surface oscillation amplitude is enhanced by a factor of 1.5.A large fraction of the turbulence kinetic energy k=12ui'ui'[U+203E] is due to the self-sustained jet oscillations. A triple decomposition of the instantaneous velocity was used to divide the turbulence kinetic energy into a part originating from the self-sustained jet oscillation k osc and a part originating from the higher frequency turbulent fluctuations k turb. It follows that the Lorentz force does not influence k turb in the measurement plane, but the distribution of k osc can be altered significantly. The amount of energy contained in the self-sustained oscillation is three times lower when F L < 0 compared to the situation with F L > 0. ? 2014 Elsevier Inc.
@article{
title = {Electromagnetic flow control of a bifurcated jet in a rectangular cavity},
type = {article},
year = {2014},
identifiers = {[object Object]},
keywords = {[Cavity flow, Continuous steel casting, Electrohyd},
volume = {47},
id = {abb5854d-7281-3068-b98d-bedf73f650e9},
created = {2016-07-04T15:47:13.000Z},
file_attached = {false},
profile_id = {9ae16654-7965-34c4-a29e-d4f92d33dc08},
last_modified = {2017-03-27T13:24:48.724Z},
read = {false},
starred = {false},
authored = {true},
confirmed = {false},
hidden = {false},
private_publication = {false},
abstract = {The effect of Lorentz forcing on self-sustained oscillations of turbulent jets (Re=3.1?10<sup>3</sup>) issuing from a submerged bifurcated nozzle into a thin rectangular liquid filled cavity was investigated using free surface visualization and time-resolved particle image velocimetry (PIV). A Lorentz force is produced by applying an electrical current across the width of the cavity in conjunction with a magnetic field. As a working fluid a saline solution is used. The Lorentz force can be directed downward (<inf>F L</inf> < 0) or upward (<inf>F L</inf> > 0), to weaken or strengthen the self-sustained jet oscillations. The low frequency self-sustained jet oscillations induce a free surface oscillation. When <inf>F L</inf> < 0 the amplitude of the free surface oscillation is reduced by a factor of 6 and when <inf>F L</inf> > 0 the free surface oscillation amplitude is enhanced by a factor of 1.5.A large fraction of the turbulence kinetic energy k=12ui'ui'[U+203E] is due to the self-sustained jet oscillations. A triple decomposition of the instantaneous velocity was used to divide the turbulence kinetic energy into a part originating from the self-sustained jet oscillation <inf>k osc</inf> and a part originating from the higher frequency turbulent fluctuations <inf>k turb</inf>. It follows that the Lorentz force does not influence <inf>k turb</inf> in the measurement plane, but the distribution of <inf>k osc</inf> can be altered significantly. The amount of energy contained in the self-sustained oscillation is three times lower when <inf>F L</inf> < 0 compared to the situation with <inf>F L</inf> > 0. ? 2014 Elsevier Inc.},
bibtype = {article},
author = {Kalter, R. and Tummers, M.J. and Kenjere?, S. and Righolt, B.W. and Kleijn, C.R.},
journal = {International Journal of Heat and Fluid Flow}
}
Downloads: 0
{"_id":"LCYZWeyG2HxqxAkaM","bibbaseid":"kalter-tummers-kenjere-righolt-kleijn-electromagneticflowcontrolofabifurcatedjetinarectangularcavity-2014","authorIDs":[],"author_short":["Kalter, R.","Tummers, M.","Kenjere?, S.","Righolt, B.","Kleijn, C."],"bibdata":{"title":"Electromagnetic flow control of a bifurcated jet in a rectangular cavity","type":"article","year":"2014","identifiers":"[object Object]","keywords":"[Cavity flow, Continuous steel casting, Electrohyd","volume":"47","id":"abb5854d-7281-3068-b98d-bedf73f650e9","created":"2016-07-04T15:47:13.000Z","file_attached":false,"profile_id":"9ae16654-7965-34c4-a29e-d4f92d33dc08","last_modified":"2017-03-27T13:24:48.724Z","read":false,"starred":false,"authored":"true","confirmed":false,"hidden":false,"private_publication":false,"abstract":"The effect of Lorentz forcing on self-sustained oscillations of turbulent jets (Re=3.1?10<sup>3</sup>) issuing from a submerged bifurcated nozzle into a thin rectangular liquid filled cavity was investigated using free surface visualization and time-resolved particle image velocimetry (PIV). A Lorentz force is produced by applying an electrical current across the width of the cavity in conjunction with a magnetic field. As a working fluid a saline solution is used. The Lorentz force can be directed downward (<inf>F L</inf> < 0) or upward (<inf>F L</inf> > 0), to weaken or strengthen the self-sustained jet oscillations. The low frequency self-sustained jet oscillations induce a free surface oscillation. When <inf>F L</inf> < 0 the amplitude of the free surface oscillation is reduced by a factor of 6 and when <inf>F L</inf> > 0 the free surface oscillation amplitude is enhanced by a factor of 1.5.A large fraction of the turbulence kinetic energy k=12ui'ui'[U+203E] is due to the self-sustained jet oscillations. A triple decomposition of the instantaneous velocity was used to divide the turbulence kinetic energy into a part originating from the self-sustained jet oscillation <inf>k osc</inf> and a part originating from the higher frequency turbulent fluctuations <inf>k turb</inf>. It follows that the Lorentz force does not influence <inf>k turb</inf> in the measurement plane, but the distribution of <inf>k osc</inf> can be altered significantly. The amount of energy contained in the self-sustained oscillation is three times lower when <inf>F L</inf> < 0 compared to the situation with <inf>F L</inf> > 0. ? 2014 Elsevier Inc.","bibtype":"article","author":"Kalter, R. and Tummers, M.J. and Kenjere?, S. and Righolt, B.W. and Kleijn, C.R.","journal":"International Journal of Heat and Fluid Flow","bibtex":"@article{\n title = {Electromagnetic flow control of a bifurcated jet in a rectangular cavity},\n type = {article},\n year = {2014},\n identifiers = {[object Object]},\n keywords = {[Cavity flow, Continuous steel casting, Electrohyd},\n volume = {47},\n id = {abb5854d-7281-3068-b98d-bedf73f650e9},\n created = {2016-07-04T15:47:13.000Z},\n file_attached = {false},\n profile_id = {9ae16654-7965-34c4-a29e-d4f92d33dc08},\n last_modified = {2017-03-27T13:24:48.724Z},\n read = {false},\n starred = {false},\n authored = {true},\n confirmed = {false},\n hidden = {false},\n private_publication = {false},\n abstract = {The effect of Lorentz forcing on self-sustained oscillations of turbulent jets (Re=3.1?10<sup>3</sup>) issuing from a submerged bifurcated nozzle into a thin rectangular liquid filled cavity was investigated using free surface visualization and time-resolved particle image velocimetry (PIV). A Lorentz force is produced by applying an electrical current across the width of the cavity in conjunction with a magnetic field. As a working fluid a saline solution is used. The Lorentz force can be directed downward (<inf>F L</inf> < 0) or upward (<inf>F L</inf> > 0), to weaken or strengthen the self-sustained jet oscillations. The low frequency self-sustained jet oscillations induce a free surface oscillation. When <inf>F L</inf> < 0 the amplitude of the free surface oscillation is reduced by a factor of 6 and when <inf>F L</inf> > 0 the free surface oscillation amplitude is enhanced by a factor of 1.5.A large fraction of the turbulence kinetic energy k=12ui'ui'[U+203E] is due to the self-sustained jet oscillations. A triple decomposition of the instantaneous velocity was used to divide the turbulence kinetic energy into a part originating from the self-sustained jet oscillation <inf>k osc</inf> and a part originating from the higher frequency turbulent fluctuations <inf>k turb</inf>. It follows that the Lorentz force does not influence <inf>k turb</inf> in the measurement plane, but the distribution of <inf>k osc</inf> can be altered significantly. The amount of energy contained in the self-sustained oscillation is three times lower when <inf>F L</inf> < 0 compared to the situation with <inf>F L</inf> > 0. ? 2014 Elsevier Inc.},\n bibtype = {article},\n author = {Kalter, R. and Tummers, M.J. and Kenjere?, S. and Righolt, B.W. and Kleijn, C.R.},\n journal = {International Journal of Heat and Fluid Flow}\n}","author_short":["Kalter, R.","Tummers, M.","Kenjere?, S.","Righolt, B.","Kleijn, C."],"bibbaseid":"kalter-tummers-kenjere-righolt-kleijn-electromagneticflowcontrolofabifurcatedjetinarectangularcavity-2014","role":"author","urls":{},"keyword":["[Cavity flow","Continuous steel casting","Electrohyd"],"downloads":0},"bibtype":"article","creationDate":"2019-11-28T15:54:07.692Z","downloads":0,"keywords":["[cavity flow","continuous steel casting","electrohyd"],"search_terms":["electromagnetic","flow","control","bifurcated","jet","rectangular","cavity","kalter","tummers","kenjere?","righolt","kleijn"],"title":"Electromagnetic flow control of a bifurcated jet in a rectangular cavity","year":2014}