Abstract
Power spectral density (PSD) of wall velocity gradient fluctuations has been measured using electrochemical (electrodiffusion) method in two rectangular channels with different hydraulic diameters and aspect ratio. The problem of the probes inertia at high frequency range has been smoothed by means of the transfer function; the reliability of the obtained results is justified by using of two circular probes with different diameter. For studied range of Reynolds numbers (6 × 103 < Re h < 4 × 104) all spectra functions tend to a unique curve when a suitable dimensionless coordinates are used. These coordinates depend on the mean value of the velocity gradient S, the intensity of the velocity gradient fluctuations \(\overline {s'^2 }\) and the liquid viscosity ν, only. Thus, the obtained results reveal the similitude of the turbulence in the viscous sublayer with respect to Re number and flow geometry. Sure, this hypothesis should be tested with more representative base of experimental data. The revealed similitude can be important for chemical engineering applications. Indeed, for these applications the Reynolds numbers are rather small and correspond to the studied range and the intensity of the velocity gradient fluctuations are well related with the mean value of the velocity gradient value. So, the knowing of the mean velocity gradient S allows the prediction of the PSD of the velocity gradient fluctuations, if the viscosity of the fluid ν is known.
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Kolmogorov, A., Dokl. Akad. Nauk SSSR, 1941, vol. 30, p. 299.
Monin, A.S. and Yaglom, A.M., Statistical Fluid Mechanics: Mechanics of Turbulence, USA: MIT Press, 1975.
Adolphe, X., Danaila, L., and Martemianov, S., Journal of Electroanalytical Chemistry, 2007, vol. 600, p. 119.
Lesage, F., Midoux, N., and Latifi, M.A., Experiments in Fluids, 2004, vol. 3, p. 257.
Alekseenko, S.V., Markovich, D.M., Evseev, A.R., Bobylev, A.V., Tarasov, B.V., and Karsten, V.M., Theoretical Foundations of Chemical Engineering, 2007, vol. 41, p. 417.
Wragg, A.A., Simpson, N.P., Patrick, M.A., Kalcikova, J., and Krysa, J., Russian Journal of Electrochemistry, 2008, vol. 44, p. 413.
Dumas, T., Lesage, F., Sobolik, V., and Latifi, M.A., Chemical Engineering Research and Design, 2009, vol. 8, p. 962.
Blel, W., Le Gentil-Lelièvre, C, Bénézech, T., Legrand, J., and Legentilhomme, P., Journal o Food Engineering, 2009, vol. 90, p. 422.
Barbier, J.F., Alemany, A., and Martemianov, S., Fusion Engineering and Design, 1998, vol. 43, p. 199.
Boutoudj, M.S., Ouibrahim, A., Barbeu, F., Deslouis, C, and Martemianov, S., Chemical Engineering and Processing: Process Intensification, 2008, vol. 47, p. 793.
Huchet, F., Comiti, J., Legentilhomme, P., Solliec, C., Legrand, J., and Montillet, A., International Journal of Heat and Fluid Flow, 2008, vol. 29, p. 1411.
Huchet, F., Comiti, J., Tihon, J., Montillet, A., and Legentilhomme, P., Journal of Applied Electrochemistry, 2007, vol. 37, p. 49.
Ngo Bourn, G.B., Martemianov, S., and Alemany, A., International Journal of Heat and Mass Transfer, 1999, vol. 42, p. 2849.
Pallares, J. and Grau, F.X., International Journal of Heat and Mass Transfer, 2008, vol. 51, p. 4753.
Parys, H.V., Tourwe, E., Breugelmans, T., Depauw, M., Deconinck, J., and Hubin, A., Journal of Electroanalytical Chemistry, 2008, vol. 622, p. 44.
Legrand, J. and Martemyanov, S.A., J. Appl. Electrochem., 1994, vol. 24, p. 737.
Martemianov, S. and Okulov, V.L., J. Appl. Electrochem., 2002, vol. 32, p. 25.
Leveque, M.A., Annales des Mines, 1928, vol. 13, p. 201.
Adolphe, X., Martemianov, S., Palchetti, I., and Mascini, M., J. Appl. Electrochem., 2005, vol. 35, p. 599.
Sobolik, V., Tihon, J., Wein, O., and Witcherle, K., J. Appl. Electrochem., 1998, vol. 28, p. 329.
Dib, A., Martemianov, S., Makhloufi, L., and Saidani, B., International Journal of Heat and Fluid Flow, 2008, vol. 29, p. 219.
Hanratty, T.J. and Campbell J.A., Measurement of Wall Shear Stress, in Fluid Mechanics Measurements, Goldstein, J.R., Ed., Hemisphere, Washington, 1983, p. 559.
Skurygin, E., Martemianov, S., Vorontyntsev, M., and Grafov, B., Soviet Electrochemistry, 1989, vol. 25, p. 685.
Deslouis, C., Gil, O., and Tribollet, B., J. Fluid Mech., 1990, vol. 215, p. 85.
Schlichting, H., Bounadary Layer Theory, Mac Grawhill, USA, 1987.
Idel’cik, I.E., Memento des pertes de charges, Coefficients de pertes de charge singulieres etde pertes de charges par frottement. Eyrolles, Paris, 1999.
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Published in Russian in Elektrokhimiya, 2011, Vol. 47, No. 9, pp. 1050–1057.
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Dib, A., Martemianov, S. On similitude of near wall turbulence in viscous sublayer. Russ J Electrochem 47, 980–987 (2011). https://doi.org/10.1134/S1023193511090035
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DOI: https://doi.org/10.1134/S1023193511090035