Vortices evolution in confined laminar radial flow between parallel discs

Shen, Feng; Chen, Cong-Lian; Liu, Zhaomiao

doi:10.1016/j.ces.2014.05.013

Cited by 7 publications

(3 citation statements)

References 31 publications

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“…Using computational fluid dynamics (CFD) method, Biswas et al found that up to four vortices exist in the flow field at Re = 1800 and e = 6.48. In our previous study, we verified the existence of the four vortices in particle image velocimetry (PIV) experiments and quantitatively characterised the formation and vortices evolutions.…”

Section: Introductionmentioning

confidence: 65%

“…However, as the confinement of the sidewall, the primary vortex stops increasing when Re > 910. The phenomenon has not been observed in the flow of parallel discs …”

Section: Resultsmentioning

confidence: 92%

“…The phenomenon has not been observed in the flow of parallel discs. 16,20,23,26 The secondary vortex appears in the flow region between the primary vortex and the sidewall at Re = 420. At Re = 630, the secondary vortex core moves radially towards the sidewall.…”

Section: Effect Of Inlet Re On Vortices Evolutionmentioning

confidence: 99%

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Vortices evolution in round pockets of modern machine tools

Shen

Yan

Zhao

et al. 2019

Lubrication Science

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Vortices evolutions in oil pockets of machine tools were investigated by using a particle image velocimetry (PIV) system and numerical simulations. The influences of Reynolds number (Re), aspect ratio of pocket depth‐to‐nozzle radius (e), and clearance height (h) on the vortices characteristics were studied. Up to three interacting vortices appear, namely, the primary vortex, the secondary vortex, and the tertiary vortex. The vortices evolve in a complex manner. The primary vortex appears at 15 < Re < 1610 and dominates the whole pocket flow at relatively high Re. The secondary vortex appears at Re > 210. The vortices size increases with e increasing. Moreover, the vortices detachment and reattachment positions were also been investigated. The vortices structures have significant influences on the distributions of pressures and wall shear stresses on the upper disc. The results further the understanding of vortices evolutions in oil pockets and will guide engineering applications related to the round pocket flow.

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Section: Introductionmentioning

confidence: 65%

“…However, as the confinement of the sidewall, the primary vortex stops increasing when Re > 910. The phenomenon has not been observed in the flow of parallel discs …”

Section: Resultsmentioning

confidence: 92%

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Vortices evolution in round pockets of modern machine tools

Shen

Yan

Zhao

et al. 2019

Lubrication Science

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Radial Diffusers – Simulation of Three‐Dimensional Flow Effects with CFD (Part 1)

Findeisen

Urbaneck

Platzer

2018

Chemie Ingenieur Technik

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Radialdiffusoren dienen der Be‐ und Entladung von thermischen Speichern und beeinflussen signifikant die Qualität der thermischen Schichtung. Zur Verbesserung der Schichtungsqualität ist das Verständnis der komplexen Strömungsvorgänge notwendig. Gegenstand von Teil 1 der Veröffentlichungsreihe ist die Simulation einer isothermen Strömung im Radialdiffusor unter besonderer Beachtung der Strömungsvorgänge in der Einlaufstrecke sowie der Grenzschichtbehandlung. Nur bei einer sehr guten Auflösung der Grenzschichtströmung ist ein symmetrisches Ausströmen festzustellen.

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