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Skin friction estimation in a strong decelerating flow

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Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
The paper presents the analysis of the turbulent boundary layer developed on a flat plate subjected to an Adverse Pressure Gradient (APG) and approaching separation. The aim of the study is to examine the effects of pressure gradient on a non-equilibrium boundary layer while indicating local areas of the equilibrium flow. The emphasis is on the analysis of mean flow velocity and the estimation of skin friction. It is known that accurate measurements of skin friction were considered as a difficult and demanding task despite of various measuring techniques available. A great challenge is especially the measurement of a strong decelerated turbulent boundary layer because of low shear stress and possible large measuring errors. To date, the oil film or oil drop interferometry technique, because of its high accuracy, has become a basis of turbulent-boundary-layer research. In our research, this technique has been used as a reference method for comparing with the traditional Clauser chart method, which generally is considered as not suitably for non-canonical flows. In the paper, however, a correction of the method is proposed, which allows one to increase its range of applicability. This corrected Clauser chart method (CCCM) involves only one iteration while other proposed in the literature methods employ a twofold iterative procedure. The comparison of the methods for the non-canonical turbulent boundary layer, i.e. adverse pressure gradient with a strong flow history effect has been presented. It has been shown that CCCM can be successfully used for small and medium pressure gradients, where the Clauser-Rotta pressure gradient parameter β does not exceed level close to 11.
Rocznik
Strony
365--376
Opis fizyczny
Bibliogr. 22 poz., rys., tab.
Twórcy
autor
  • Czestochowa University of Technology, Częstochowa, Poland
autor
  • Czestochowa University of Technology, Częstochowa, Poland
autor
  • Czestochowa University of Technology, Częstochowa, Poland
Bibliografia
  • 1. Blackwelder R.F., Haritonidis J.H., 1983, Scaling of the bursting frequency in turbulent boundary layers, Journal of Fluid Mechanics, 132, 1, 87
  • 2. Bobke A., Vinuesa R., Orlu R., Schlatter P., 2017, History effects and near-equilibrium in adverse- pressure-gradient turbulent boundary layers adverse-pressure-gradient turbulent, Journal of Fluid Mechanics, 820 (April), 667-692
  • 3. Castillo L., Johansson T.G., 2002, The effects of the upstream conditions on a low Reynolds number turbulent boundary layer with zero pressure gradient, Journal of Turbulence, 3, 31, 1-19
  • 4. Clauser F.H., 1956, The turbulent boundary layer, Advances in Applied Mechanics, 4, 1-51
  • 5. Dixit S.A., Ramesh O.N., 2009, Determination of skin friction in strong pressure-gradient equilibrium and near-equilibrium turbulent boundary layers, Experiments in Fluids, 47, 6, 1045-1058
  • 6. Dróżdż A., Elsner W., 2017, An experimental study of turbulent boundary layers approaching separation, International Journal of Heat and Fluid Flow, 68C (April), 337-347
  • 7. Dróżdż A., Elsner W., Drobniak S., 2008, Application of oil-fringe interferometry for measurements of wall shear stress, Turbomachinery, 133, 103-110
  • 8. Hutchins N., Choi K.S., 2002, Accurate measurements of local skin friction coefficient using hot-wire anemometry, Progress in Aerospace Sciences, 38, 4/5, 421-446
  • 9. Ikeya Y., Orlu R., Fukagata K., Alfredsson P.H , 2017. Towards a theoretical model of heat transfer for hot-wire anemometry close to solid walls, International Journal of Heat and Fluid Flow, 68, 248-256, DOI: 10.1016/j.ijheatfluidflow.2017.09.002
  • 10. Jorgensen F.E., 2002, How to Measure Turbulence with Hot-Wire Anemometers – a Practical Guide, Dantec Dynamics A/S, P.O. Box 121, Tonsbakken 16-18, DK-2740 Skovlunde, Denmark
  • 11. Kendall A., Koochesfahani M., 2007, A method for estimating wall friction in turbulent wallbounded flows, Experiments in Fluids, 44, 5, 773-780
  • 12. Knopp T., Schanz D., Schroder A., Dumitra M., Cierpka C., Hain R., Kahler C.J. , 2013, Experimental investigation of the log-law for an adverse pressure gradient turbulent boundary layer flow at Reθ = 10000, Flow, Turbulence and Combustion, 92, 1/2, 451-471
  • 13. Madad R., Harun Z., Chauhan K., Monty J.P., Marusic I., 2010, Skin friction measurement in zero and adverse pressure gradient boundary layers using oil film interferometry, 17th Australasian Fluid Mechanics Conference 2010
  • 14. Mathis R., Hutchins N., Marusic I., 2009, Large-scale amplitude modulation of the small-scale structures in turbulent boundary layers, Journal of Fluid Mechanics, 628 (2009), 311
  • 15. Monty J.P.P., Harun Z., Marusic I., 2011, A parametric study of adverse pressure gradient turbulent boundary layers, International Journal of Heat and Fluid Flow, 32, 3, 575-585
  • 16. Nagib H., Christophorou C., Ruedi J.-D., Monkewitz P., Osterlund J., Gravante S., Chauhan K., Pelivan I., 2004, Can we ever rely on results from wall-bounded turbulent flows without direct measurements of wall shear stress?, 24th AIAA Aerodynamic Measurement Technology and Ground Testing Conference
  • 17. Pailhas G., Barricau P., Touvet Y., Perret L., 2009, Friction measurement in zero and adverse pressure gradient boundary layer using oil droplet interferometric method, Experiments in Fluids, 47, 2, 195-207
  • 18. Segalini A., Ruedi J.-D., Monkewitz P.A. ¨ , 2015, Systematic errors of skin-friction measurements by oil-film interferometry, Journal of Fluid Mechanics, 773, 298-326
  • 19. Simpson R.L., 1989, Turbulent boundary-layer separation, Annual Review of Fluid Mechanics, 21, 205-234
  • 20. Tanner L.H., Blows L.G., 1976, A study of the motion of oil films on surfaces in air flow, with application to the measurement of skin friction, Journal of Physics E, 9, 3, 194-202
  • 21. Vinuesa R., Nagib H.M., 2015, Enhancing the accuracy of measurement techniques in high Reynolds number turbulent boundary layers for more representative comparison to their canonical representations, European Journal of Mechanics – B/Fluids, November
  • 22. Zanoun E.S., Durst F., Nagib H., 2003, Evaluating the law of the wall in two-dimensional fully developed turbulent channel flows, Physics of Fluids, 15, 10, 3079-3089
Uwagi
PL
Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-089b4789-ac31-4d84-b493-37afea08175e
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