Skip to main content
Log in

Evaluating the applicability of a phase-averaged processing of skin-friction field measurement using an optical flow method

Journal of Visualization Aims and scope Submit manuscript

Cite this article

Abstract

The phase-averaged skin-friction analysis based on global luminescent oil film (GLOF) was conducted for periodically fluctuating unsteady phenomena at the frequency of approximately 150 Hz which is estimated based on Karman vortex shedding. An unsteady pressure transducer and a camera were synchronized, and the time-averaged and phase-averaged skin-friction fields were investigated. The time-series image pair data obtained by the camera were decomposed into eight intervals of a phase angle of \(\pi /4\) with synchronizing the signal of the unsteady pressure. The phase-averaged result shows the periodical pattern corresponding to the vortices structure generated from the edge of the test model which was not resolved by the time-averaged result. The phase-averaged processing was successfully applied to the GLOF measurement, and the results showed the detail information of skin friction at each phase.

Graphic abstract

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7
Fig. 8
Fig. 9
Fig. 10

References

  • Brown JL, Naughton JW (1999) The thin oil-film equation. Tech Report No. NASA/TM-1999-208767, NASA, Washington, DC

  • Hanratty TJ, Campbell JA (1996) Measurement of wall shear stress fluid mechanics measurements. Richard J. Goldstein. Taylor & Francis, Washington DC, Chapter 9

  • Horn BK, Schunk BG (1981) Determining optical flow. Artif Intell 17(1–3):185–204. https://doi.org/10.1016/0004-3702(81)90024-2

    Article  Google Scholar 

  • Kakuta T, et al (2010) Imaging measurement of skin friction field around bluff body using luminescent oil film technique. In: Inter Sym F Visual, EXCO Daegu, Korea

  • Lee T et al (2018) Linear least-squares method for global luminescent oil film skin friction field analysis. Rev Sci Instrum 89:065106. https://doi.org/10.1063/1.5001388

    Article  Google Scholar 

  • Lee T et al (2019) Validation and unsteady analysis of global luminescent oil-film skin-friction measurement. Meas Sci Technol (MST). https://doi.org/10.1088/1361-6501/ab512a

    Article  Google Scholar 

  • Liu T, et al (2008) Global luminescent oil-film skin-friction meter. In: AIAA J, vol 46, pp 1–11

  • Liu T, Sullivan JP (1998) Luminescent oil-film skin-friction meter. In: AIAA J, vol 36, pp 1461–1465

  • Liu T et al (2011) Skin friction topology in a region enclosed by penetrable boundary. Exp Fluids 51:1549–1562

    Article  Google Scholar 

  • Meloy J, et al (2011) Experimental verification of a MEMS based skin friction sensor for quantitative wall shear stress measurement. In: AIAA P 2011, 3995

  • Naughton JW, Brown JL (1996) Surface interferometric skin-friction measurement technique. In: AIAA p 96, 2183

  • Naughton JW, Sheplak M (2002) Modern developments in shear-stress measurement. Prog Aerosp Sci 38:515–570

    Article  Google Scholar 

  • Plesniak M, Peterson S (2004) Wall shear stress measurements for conventional applications and biomedical flows. In: AIAA P 2004, 2301

  • Pozrikidis C (2016) Fluid dynamics: theory, computation, and numerical simulation. Springer, Berlin

    MATH  Google Scholar 

  • Redia DC, Wilder MC (2001) Shear-sensitive liquid crystal coating method applied through transparent test surfaces. In: AIAA J, vol 39, no 1, pp 195–197

  • Wewengkang PN (2017) Experimental study of global luminescent oil-film (GLOF) skin-friction meter on delta wings. Master thesis

  • Winter KG (1977) An outline of the techniques available for measurement of skin friction in turbulent boundary layer. Prog Aerosp Sci 18:1–57

    Article  MathSciNet  Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Chungil Lee.

Additional information

Publisher's Note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Rights and permissions

Reprints and Permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Lee, C., Lee, T., Nonomura, T. et al. Evaluating the applicability of a phase-averaged processing of skin-friction field measurement using an optical flow method. J Vis 23, 773–782 (2020). https://doi.org/10.1007/s12650-020-00667-6

Download citation

  • Received:

  • Revised:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s12650-020-00667-6

Keywords

Navigation