Vortex dynamics of junction flows

Authors

  • V. A. Voskoboinick Institute of hydrodynamics of NAS of Ukraine, 01057, Kyiv, Marii Kapnist str., 8/4 https://orcid.org/0000-0003-2161-6923
  • O. A. Voskoboinyk Institute of hydrodynamics of NAS of Ukraine, 01057, Kyiv, Marii Kapnist str., 8/4 https://orcid.org/0000-0001-8114-4433
  • L. M. Tereshchenko Institute of hydrodynamics of NAS of Ukraine, 01057, Kyiv, Marii Kapnist str., 8/4
  • A. V. Voskobiinyk Institute of hydrodynamics of NAS of Ukraine, 01057, Kyiv, Marii Kapnist str., 8/4

DOI:

https://doi.org/10.17721/1812-5409.2021/4.2

Keywords:

junction flow, vortex structure, three-row grillage, velocity field

Abstract

Group constructions of bluff bodies are widely used in bridge construction practice. The junction flows of such structures are characterized by considerable complexity, nonstationarity and instability. In the vicinity of bluff bodies, systems of horseshoe vortex structures, shear layers, separated regions, jet flows, wake vortices and vortex Karman’s streets are formed. The study of the features of the generation and evolution of vortex and jet flows, the mechanisms of interaction of these flows with streamlined surfaces requires considerable effort during numerical and physical modeling. The purpose of the work is to determine the features of vortex and jet flow in the region of junction of three-row pile grillage with a rigid flat surface. Experimental studies were carried out in laboratory conditions in a hydrodynamic channel, where the three-row group of cylinders was installed on the hydraulically smooth rigid surface. Visual investigations and measurements of the velocity field were carried out inside and around the three-row grillage. The features of the formation and evolution of vortex and jet flows inside and near the cylindrical group were established. Integral and spectral characteristics of the velocity fluctuation field were obtained.

Pages of the article in the issue: 25 - 28

Language of the article: Ukrainian

References

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VOSKOBOINICK, V.A. et al. (2021) Junction flow around cylinder group on flat plate. In: Sadovnichiy, V.A., Zgurovsky, M.Z. (eds) Contemporary Approaches and Methods in Fundamental Mathematics and Mechanics. Understanding Complex Systems. Springer, Cham. pp. 35-50.

VOSKOBIJNYK, A.V. et al. (2016) Feature of the vortex and the jet flows around and inside the three-row cylindrical group. Proc. 8th International Conference on Scour and Erosion (ICSE 2016) 12-15 September 2016 Oxford, UK, pp. 897-903.

VOSKOBOINICK, V., KORNEV, N. and TURNOW, J. (2013) Study of near wall coherent flow structures on dimpled surfaces using unsteady pressure measurements. Flow Turbulence Combust. 90 (4). p.709-722.

VOSKOBOINICK, A. et al. (2021) Interaction of group of bridge piers on scour. In: Hu, Z., Petoukhov, S., Dychka, I., He, M. (eds) Advances in Computer Science for Engineering and Education III. ICCSEEA 2020. Advances in Intelligent Systems and Computing, Vol. 1247. Springer, Cham. pp. 3-17.

No 4 (2021)

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Published

2021-12-21

How to Cite

Voskoboinick, V. A., Voskoboinyk, O. A., Tereshchenko, L. M., & Voskobiinyk, A. V. (2021). Vortex dynamics of junction flows. Bulletin of Taras Shevchenko National University of Kyiv. Physical and Mathematical Sciences, (4), 25–28. https://doi.org/10.17721/1812-5409.2021/4.2

Issue

No. 4 (2021)

Section

Differential equations, mathematical physics and mechanics

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