Abstract
A system combining tomographic PIV (TPIV) and Mach–Zehnder interferometry (MZI) simultaneously measures the time-resolved 3D flow field and 2D distribution of wall-normal deformation in a turbulent channel flow over a transparent compliant surface. This paper focuses on the experimental techniques and data analysis procedures, but includes sample results. Standard TPIV analysis resolves the log layer of the mean velocity and the linear decrease in total shear stress with distance from the wall. Single-pixel ensemble correlations reveal the buffer layer and top of the viscous sublayer. Analysis of the MZI data consists of two steps, namely critical spatial filtering of interferograms to remove noise and phase demodulation to calculate the surface shape. A new technique to improve the filtration of noise from interferograms based on spatial correlations of small windows is introduced and optimized. Taking advantage of this enhancement, the phase/deformation distribution is calculated directly from arccosines of the intensity, which avoids edge artifacts affecting spectral calculations. Validations using synthetic noisy interferograms indicate that errors associated with correlation-based enhancement are consistently lower and much less sensitive to fringe shape than spectral band-pass filtering. The experimental wavenumber–frequency spectra show that the deformation consists of patterns that are larger than the field of view, surface waves and small-scale patterns. Some of the latter are advected at the freestream velocity, but mostly at 70 % of the freestream, the mean speed at 10 % of the channel half height. Indeed, spatial correlations of the deformation with velocity components peak at this elevation.
Similar content being viewed by others
References
Atkinson C, Soria J (2009) An efficient simultaneous reconstruction technique for tomographic particle image velocimetry. Exp Fluids 47:553–568
Bartelt H, Lohmann AW, Wirnitzer B (1984) Phase and amplitude recovery from bispectra. Appl Opt 23(18):3121–3129
Benjamin TB (1960) Effects of a flexible boundary on hydrodynamic stability. J Fluid Mech 9:513–532
Benjamin TB (1963) The threefold classification of unstable disturbances in flexible surfaces bounding inviscid flows. J Fluid Mech 16:436–450
Benjamin TB (1966) Fluid flow with flexible boundaries. Applied mechanics: proceedings of the eleventh international congress of applied mechanics, Munich (Germany), pp 109–128
Blake WK (1986) Mechanisms of flow-induced sound and vibration. Academic Press, New York
Blick EF, Walters RR (1968) Turbulent boundary-layer characteristics of compliant surfaces. J Aircraft 5(1):11–16
Boggs FW and Hahn ER (1962) Performance of compliant skins in contact with high velocity flow in water. Proceedings of 7th joint army-navy-air force conference on elastomer research and development, San Francisco, vol 2, p 443
Bone DJ, Bachor HA, Sandeman RJ (1986) Fringe-pattern analysis using a 2-D Fourier transform. Appl Opt 25(10):1653–1660
Bushnell DM, Hefner JN, Ash RL (1977) Effect of compliant wall motion on turbulent boundary layers. Phys Fluids 20:31–48
Butters JN, Leendertz JA (1971) Holographic and video techniques applied to engineering measurement. Meas Control 4(12):349–354
Castellini P, Martarelli M, Tomasini EP (2006) Laser doppler vibrometry: development of advanced solutions answering to technology’s needs. Mech Syst Signal Process 20:1265–1285
Choi KS, Yang X, Clayton BR, Glover EJ, Atlar M, Semenov BN, Kulik VM (1997) Turbulent drag reduction using compliant surfaces. Proc R Soc Lond A 453:2229–2240
Dinkelacker A, Hessel M, Meier GEA, Schewe G (1977) Investigation of pressure fluctuations beneath a turbulent boundary layer by means of an optical method. Phys Fluids 20:S216–S224
Elsinga GE, Scarano F, Wieneke B, van Oudheusden BW (2006) Tomographic particle image velocimetry. Exp Fluids 41:933–947
Fisher DH, Blick EF (1966) Turbulent damping by flabby skins. J Aircraft 3(2):163–164
Gad-el-Hak M (1986) The response of elastic and viscoelastic surfaces to a turbulent boundary layer. J Appl Mech 53:206–212
Gad-el-Hak M, Blackwelder RF, Riley JJ (1984) On the interaction of compliant coatings with boundary-layer flows. J Fluid Mech 140:257–280
Ghiglia DC, Pritt MD (1998) Two-dimensional phase unwrapping. Wiley, New York
Ghiglia DC, Mastin GA, Romero LA (1987) Cellular-automata method for phase unwrapping. J Opt Soc Am A 4(1):267–280
Goldstein RM, Zebker HA, Werner CL (1988) Satellite radar interferometry: two-dimensional phase unwrapping. Radio Sci 23(4):713–720
Hansen RJ, Hunston DL (1974) An experimental study of turbulent flows over compliant surfaces. J Sound Vib 34:297–308
Hansen RJ, Hunston DL (1983) Fluid-property effects on flow-generated waves on a compliant surface. J Fluid Mech 133:161–177
Hansen RJ, Hunston DL, Ni CC, Reischman MM (1980) An experimental study of flow-generated waves on a flexible surface. J Sound Vib 68:317–334
Harris FJ (1978) On the use of windows for harmonic analysis with the discrete Fourier transform. Proc IEEE 66:51–83
Harris GL, Lissaman PBS (1969) Turbulent skin friction on compliant surfaces. AIAA J 7(8):1625–1627
Hecht E (2002) Optics, 4th edn. Addison-Wesley, San Francisco
Hess DE, Peattie RA, Schwarz WH (1993) A noninvasive method for the measurement of flow-induced surface displacement of a compliant surface. Exp Fluids 14:78–84
Hong J, Katz J, Schultz MP (2011) Near-wall turbulence statistics and flow structures over three-dimensional roughness in a turbulent channel flow. J Fluid Mech 667:1–37
Ichioka Y, Inuiya M (1972) Direct phase detecting system. Appl Opt 11(7):1507–1514
Itoh K (1982) Analysis of the phase unwrapping algorithm. Appl Opt 21(14):2470
Jeong J, Hussain F (1995) On the identification of a vortex. J Fluid Mech 285:69–94
Jones R, Wykes C (1983) Holographic and speckle interferometry. Cambridge University Press, Cambridge, pp 178–179
Joshi P, Liu X, Katz J (2014) Effect of mean and fluctuating pressure gradients on boundary layer turbulence. J Fluid Mech 748:36–84
Kim E, Choi H (2014) Space-time characteristics of a compliant wall in a turbulent channel flow. J Fluid Mech 756:30–53
Kramer MO (1957) Boundary layer stabilization by distributed damping. J Aeronaut Sci 24:459–460
Kramer MO (1962) Boundary layer stabilization by distributed damping. Naval Eng J 2:341–348
Landahl MT (1962) On the stability of a laminar incompressible boundary layer over a flexible surface. J Fluid Mech 13:609–632
Lee T, Fisher M, Schwarz WH (1993a) Investigation of the stable interaction of a passive compliant surface with a turbulent boundary layer. J Fluid Mech 257:373–401
Lee T, Fisher M, Schwarz WH (1993b) The measurement of flow-induced surface displacement on a compliant surface by optical holographic interferometry. Exp Fluids 14:159–168
Lee T, Fisher M, Schwarz WH (1995) Investigation of the effects of a compliant surface on boundary-layer stability. J Fluid Mech 288:37–58
Luhar M, Sharma AS, McKeon BJ (2015) A framework for studying the effect of compliant surfaces on wall turbulence. J Fluid Mech 768:415–441
Maidanik G, Reader WT (1968) Filtering action of a blanket dome. J Acoust Soc Am 44:497–502
Mark JE (ed) (1999) Polymer data handbook. Oxford University Press, Oxford
McMichael JM, Klebanoff PS, Mease NE (1980) Experimental investigation of drag on a compliant surface. In: G. R. Hough (ed) Viscous flow drag reduction. American Institute of Aeronautics and Astronautics Inc, New York, pp 410–438
Meinhart CD, Wereley ST, Santiago JG (2000) A PIV algorithm for estimating time-averaged velocity fields. J Fluids Eng 122:285–289
Nakayama S, Toba H, Fujiwara N, Gemma T, Takeda M (2009) Fourier-transform method with high accuracy by use of iterative technique narrowing the spectra of a fringe pattern. In: Osten W, Kujawinska M (eds) Fringe 2009. Springer, Berlin
Pedrini G, Tiziani H (1994) Double-pulse electronic speckle interferometry for vibration analysis. Appl Opt 33(34):7857–7863
Pedrini G, Pfister B, Tiziani H (1993) Double pulse-electronic speckle interferometry. J Mod Opt 40(1):89–96
Pope SB (2000) Turbulent flows. Cambridge University Press, Cambridge
Roddier C, Roddier F (1987) Interferogram analysis using Fourier transform techniques. Appl Opt 26(9):1668–1673
Scarano F (2013) Tomographic PIV: principles and practice. Meas Sci Technol 24:012001
Scharnowski S, Hain R, Kahler CJ (2012) Reynolds stress estimation up to single-pixel resolution using PIV-measurements. Exp Fluids 52:985–1002
Servin M, Quiroga JA, Padilla JM (2014) Fringe pattern analysis for optical metrology. Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
Soria J, Willert C (2012) On measuring the joint probability density function of three-dimensional velocity components in turbulent flows. Meas Sci Technol 23:065301
Tabatabai H, Oliver DE, Rohrbaugh JW, Papadopoulos C (2013) Novel applications of laser doppler vibration measurements to medical imaging. Sens Imag 14:13–28
Takeda M, Ina H, Kobayashi S (1982) Fourier-transform method of fringe-pattern analysis for computer-based topography and interferometry. J Opt Soc Am 72(1):156–160
Totsky AV, Kurbatov IV, Lukin VV, Egiazarian KO, Astola JT (2003) Combined bispectrum-filtering techniques for radar output signal reconstruction in ATR applications. Proc SPIE 5094:301–312
Totsky AV, Zelensky AA, Kravchenko VF (2015) Bispectral methods of signal processing: applications in Radar, telecommunications and digital image restoration. Walter de Gruyter GmbH, Berlin
Uzol O, Chow YC, Katz J, Meneveau C (2002) Unobstructed particle image velocimetry measurements within an axial turbo-pump using liquid and blades with matched refractive indices. Exp Fluids 33:909–919
Westerweel J, Geelhoed PF, Lindken R (2004) Single-pixel resolution ensemble correlation for micro-PIV applications. Exp Fluids 37:375–384
Wieneke B (2008) Volume self-calibration for 3D particle image velocimetry. Exp Fluids 45:549–556
Wu H, Miorini RL, Katz J (2011) Measurements of the tip leakage vortex structures and turbulence in the meridional plane of an axial water-jet pump. Exp Fluids 50(4):989–1003
Yañez-mendiola J, Servín M, Malacara-hernández D (2001) Reduction of the edge effects induced by the boundary of a linear-carrier interferogram. J Mod Opt 48(4):685–693
Acknowledgments
This project is funded by the Office of Naval Research under Grant No. N000140910621. Dr. Debbie Nalchajian is the program officer. The author would also like to thank W. Blake for many constructive discussions and Dr. Rui Xiao for his help to measure the mechanical properties of PDMS.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Zhang, C., Miorini, R. & Katz, J. Integrating Mach–Zehnder interferometry with TPIV to measure the time-resolved deformation of a compliant wall along with the 3D velocity field in a turbulent channel flow. Exp Fluids 56, 203 (2015). https://doi.org/10.1007/s00348-015-2072-x
Received:
Revised:
Accepted:
Published:
DOI: https://doi.org/10.1007/s00348-015-2072-x