Turbulent flow past a cylinder in a wind tunnel has been investigated experimentally. Averaged velocity fields near the cylinder have been obtained with the optical PIV method and comparative characteristics have been given for noncavitation and cavitation regimes. From the vector patterns of the averaged velocity fields, the author has determined the angles of separation of the boundary layer from the cylinder surface in the considered regimes of flow. It has been shown that cavitation causes the vortex zone behind the cylinder to increase, the separation angles to displace upstream, and the hydraulic resistance to grow. A comparative calculation of the separation angles and the coefficients of hydraulic resistance of cylinders manufactured from different materials has been given. It has been shown that the vortex zone of a Teflon cylinder in flow having a hydrophobic surface differs from the vortex zone of a steel cylinder, particularly for the cavitation regime in which the angles of separation, especially from the upper part, decrease appreciably and the resistance grows.
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References
M. Gad-el-Hak, Flow control, Appl. Mech. Rev., 42, No. 10, 261−293 (1989).
M. Yu. Berezent′ev, S. V. Guvernyuk, M. A. Zubin, A. F. Zubkov, and A. F. Mosin, Visualization of subsonic flow past cylindrical bodies with vortex cells, Aéromekh. Gaz. Dinam., No. 1, 11–18 (2010).
E. P. Dyban and É. Ya. Épik, Heat and Mass Transfer and Hydrodynamics of Turbulized Flows [in Russian], Naukova Dumka, Kiev (1985).
A. N. Mikheev, N. I. Mikheev, and V. M. Molochnikov, Intensification of heat transfer of the cylinder in transverse pulsatory flow, in: Modern Science. Collected Scientific Papers [in Russian], NPVK "Triakon," Kiev, Issue 2 (10) (2012), pp. 214–219.
T. V. Kuchuk, Transverse flow past a cylinder in the case of periodic disturbance of the boundary layer by electrolysis bubbles, Élektron. Obrab. Mater., 43, No. 2, 31–38 (2007).
U. O. Unal and M. Atlar, An experimental investigation into the effect of vortex generators on the near-wake flow of a circular cylinder, Exp. Fluids, 48, No. 6, 1059–1079 (2010).
Seo Seong-Ho, Nam Chung-Do, Han Jung-Young, and Hong Cheol-Hyun, Drag reduction of a bluff body by grooves laid out by design of experiment, J. Fluids Eng., 135, No. 11, 111202 (2013).
O. V. Dunai, M. V. Eronin, D. V. Kratirov, N. I. Mikheev, and V. M. Molochnikov, Kármán vortices behind a bluff body in a bounded turbulized flow and in turbulization of the boundary layer on the body, Izv. Ross. Akad. Nauk, Mekh. Zhidk. Gaza, No. 4, 97–106 (2010).
H. Kimoto and Y. Sumita, Heat transfer characteristics of a circular cylinder in a conduit under cavitation, Trans. JSME,o No. 49, 2312−2313 (1986).
T. V. Kuchuk, M. K. Bologa, V. V. Gramatskii, and P. G. Dumitrash, Heat transfer and hydrodynamics in cavitation flow past two cylinders arranged in a row, Proc. RNCT–4, Vol. 2 (2006), pp. 163–166.
N. B. Yushkov, Investigation of Dynamic Processes in a Flow Wave Generator of the Plane Type for Formation of Fine Emulsions from Immiscible Media, Candidate′s Dissertation in Technical Sciences, Moscow (2014).
K. G. Dobrosel′skii, Procedure of investigation of transverse flow past a cylinder in a wind tunnel, Vestn. NGU, Ser. Fizika, 8, Issue 4, 110–117 (2013).
E. K. Akhmetbekov, A. V. Bil′skii, Yu. A. Lozhkin, D. M. Markovich, and M. P. Tokarev, System of control of experiment and processing of data obtained by the methods of digital tracer visualization (ActualFlow), Vych. Metod. Programmirov., 7, 79–85 (2006).
J. Westerweel, Fundamentals of digital particle image velocimetry, Meas. Sci. Technol., 8, 1379−1392 (1997).
J. Westerweel and F. Scarano, Universal outlier detection for PIV data, Exp. Fluids, 39, No. 6, 1096−1100 (2005).
B. V. Bortz, Yu. G. Kazarinov, S. F. Skoromnaya, and V. I. Tkachenko, Experimental investigation into the dynamics of air bubbles in water in fast decompression, J. Kharkiv Univ., No. 991, 95–101 (2012).
É. S. Arzumanov, Cavitation in Local Hydraulic Resistances [in Russian], Énergiya, Moscow (1978).
Christopher E. Brennen, Cavitation and Bubble Dynamics, Oxford University Press (1995).
M. P. Tokarev, D. M. Markovich, and A. V. Bil′skii, Adaptive algorithms of processing of particle images to calculate instantaneous velocity fields, Vych. Tekhnol., 12, No. 3, 109–131 (2007).
V. M. Bozhkov, L. E. Vasil′ev, and S. V. Zhigulev, Features of transverse flow past a circular cylinder, Izv. Akad. Nauk SSSR, Mekh. Zhidk. Gaza, No. 2, 154–157 (1980).
Yu. N. Marr and S. A. Shvegzhda, Features of fluid motion near the surface of the cylinder in transverse flow, Izv. Akad. Nauk SSSR, Mekh. Zhidk. Gaza, No. 4, 65–71 (1989).
A. A. Zhukauskas, Convective Transfer in Heat Exchangers [in Russian], Nauka, Moscow (1982).
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Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 89, No. 3, pp. 687–693, May–June, 2016.
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Dobrosel’skii, K.G. Use of the Piv Method for Investigation of Motion Near a Cylinder in Transverse Flow. J Eng Phys Thermophy 89, 695–701 (2016). https://doi.org/10.1007/s10891-016-1428-2
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DOI: https://doi.org/10.1007/s10891-016-1428-2