caa a22 4500 606189149 CHVBK 20210128100849.0 cr unu---uuuuu 210128e20150701xx s 000 0 eng 10.1007/s10891-015-1265-8 doi (NATIONALLICENCE)springer-10.1007/s10891-015-1265-8 Simulation of the Turbulent air Flow Over a Circular Cavity with a Variable Opening Angle in an U-Shaped Channel [Elektronische Daten] [S. Isaev, P. Baranov, A. Usachov, Yu. Zhukova, A. Vysotskaya, D. Malyshkin] A numerical investigation of the influence of the opening angle of a circular cavity in an U-shaped channel and the Reynolds number of a fluid fl ow in this channel on the local characteristics and turbulence of this fl ow has been performed based on the solution of the Reynolds equations, closed by the old and new Menter shear-stress transfer models and two variants of this model accounting for the curvature of streamlines, with the use of multiblock computational technologies realized in the VP2/3 package. The results of calculations were compared with each other and with experimental data of I. Castro and R. Savelsberg. This comparison has shown that the best agreement between the numerical predictions and experiments is obtained in the case where calculations are performed within the framework of the Leshtsiner-Rody-Isaev approach with correction for the eddy viscosity of the fluid fl ow. It was established that with increase in the Reynolds number and in the opening angle of the cavity the circulation flow in the near-wall layer of the vortex trapped in the cavity intensifies at a practically constant vorticity in the core of the vortex. Springer Science+Business Media New York, 2015 vortex cell nationallicence U-shaped channel nationallicence circular cavity nationallicence trapped vortex nationallicence turbulence nationallicence Isaev S. St. Petersburg State University of Civil Aviation, 38 Pilotov Str., 196210, St. Petersburg, Russia aut Baranov P. St. Petersburg State University of Civil Aviation, 38 Pilotov Str., 196210, St. Petersburg, Russia aut Usachov A. Moscow Complex of the Central Aerohydrodynamic Institute, 17 Radio Str., 107005, Moscow, Russia aut Zhukova Yu A. V. Luikov Heat and Mass Transfer Institute, National Academy of Sciences of Belarus, 15 P. Brovka Str., 220072, Minsk, Belarus aut Vysotskaya A. St. Petersburg State University of Civil Aviation, 38 Pilotov Str., 196210, St. Petersburg, Russia aut Malyshkin D. Kazan National Research Technical University (A. N. Tupolev Kazan Aviation Institute), 10 K. Marx Str., 420111, Kazan, Russia aut Journal of Engineering Physics and Thermophysics Springer US; http://www.springer-ny.com 88/4(2015-07-01), 902-917 1062-0125 88:4<902 2015 88 10891 https://doi.org/10.1007/s10891-015-1265-8 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10891-015-1265-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Isaev S. St. Petersburg State University of Civil Aviation, 38 Pilotov Str., 196210, St. Petersburg, Russia aut NATIONALLICENCE 700 1- Baranov P. St. Petersburg State University of Civil Aviation, 38 Pilotov Str., 196210, St. Petersburg, Russia aut NATIONALLICENCE 700 1- Usachov A. Moscow Complex of the Central Aerohydrodynamic Institute, 17 Radio Str., 107005, Moscow, Russia aut NATIONALLICENCE 700 1- Zhukova Yu A. V. Luikov Heat and Mass Transfer Institute, National Academy of Sciences of Belarus, 15 P. Brovka Str., 220072, Minsk, Belarus aut NATIONALLICENCE 700 1- Vysotskaya A. St. Petersburg State University of Civil Aviation, 38 Pilotov Str., 196210, St. Petersburg, Russia aut NATIONALLICENCE 700 1- Malyshkin D. Kazan National Research Technical University (A. N. Tupolev Kazan Aviation Institute), 10 K. Marx Str., 420111, Kazan, Russia aut NATIONALLICENCE 773 0- Journal of Engineering Physics and Thermophysics Springer US; http://www.springer-ny.com 88/4(2015-07-01), 902-917 1062-0125 88:4<902 2015 88 10891