On hydraulic analysis of the main parameters of longitudinalcirculating flow

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Abstract


Recently in practice of engineering hydraulic structures spillways with a longitudinal-circulating flow are applied. The distinguished properties of longitudinal-circulating flows are a unique example of compatibility of flow type with technological purpose of a spillway structure. The hydraulic characteristics of flow (throughput capacity, velocity distribution, pressure distribution, cavitation analysis, etc.) are determined on the basis of the calculation methods developed in the above studies, namely for: longitudinal flow using the known standard calculation methods [1]; longitudinal-circulating flow interacting with solid boundaries of spillway [1-4]; longitudinal-circulating flow in the form of a swirling stream in the aquatic environment or in the air [2; 3]; the flow arising from the interaction of unidirectional longitudinal-circulating flows [4; 5]; the flow arising from the interaction of oppositely swirling coaxial flows [3]. In this paper, the authors consider the longitudinal-circulating flow of viscous incompressible fluid in a closed channel and in a jet using a velocity wurf linking the three components of velocity U , V and W .


About the authors

Nikolaj K Ponomarev

Peoples’ Friendship University of Russia (RUDN University)

Author for correspondence.
Email: ponomarev_nk@rudn.university
6, Miklukho-Maklaya str., Moscow, 117198, Russian Federation

Candidate of Technical Science, Professor of Department of Architecture and Civil Engineering, Peoples’ Friendship University of Russia (RUDN University). Scientific interests: Hydraulics of structures, river hydraulics, problems of water resources

Leonid E Schesnyak

Peoples’ Friendship University of Russia (RUDN University)

Email: schesnyak_le@rudn.university
6, Miklukho-Maklaya str., Moscow, 117198, Russian Federation

PhD student of Department of Architecture and Civil Engineering, Peoples’ Friendship University of Russia (RUDN University). Scientific interests: Hydraulics of structures, river hydraulics.

References

  1. Ponomarev N.K. On the problem of twirled movement of viscous liquid in a pipe. Structural Mechanics of Engineering Constructions and Buildings. 2012. № 3. 2012. P. 30—38. (In Russ.).
  2. Zhivotovski B.A. Vodosbrosnye i sopryagayushchie sooruzheniya s zakrutkoj potoka. [Spillway and grade-control structures with flow twist]. Moscow: IPK RUDN publ., 1995. 190 p. (In Russ.).
  3. Zhivotovski B.A., Ponomarev N.K. Conjugation of mine spillway lower pool under conditions of high pressures. Naukovedenie. 2015. 7(1). 1—13. (In Russ.). doi: 10.15862/122TVN115. Available from: http://naukovedenie.ru/ index.php?p=vo (Accessed 16.10.2017). (In Russ.).
  4. Zhivotovski B.A., Ponomarev N.K. Improvement of hydraulic calculation of mine vortical spillway. Naukovedenie. 2015. 7(1). 1—17. (In Russ.). doi: 10.15862/121TVN115. Available from: http:// naukovedenie.ru/index.php ?p=vo (Accessed: 16.10.2017). (In Russ.).
  5. Lojcyanskij L.G. Rasprostranenie zakruchennoj strui v bezgranichnom prostranstve, zatoplennom toj zhe zhidkost’yu [Swirling stream propagation in unbounded space flooded with the same fluid]. Prikladnaya Matematika i Mekhanika AN SSSR [OTN]. 1953. No. 17. P. 3—16. (In Russ.).

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Copyright (c) 2018 Ponomarev N.K., Schesnyak L.E.

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