Skip to main content
Log in

Damping of gravity–capillary waves on the surface of turbulent fluid

  • Research Article
  • Published:
Experiments in Fluids Aims and scope Submit manuscript

Abstract

Investigation of damping of gravity–capillary waves (GCW) on the surface of turbulent fluid is a classical problem which geophysical applications are related to the problems of swell damping, interpretation of radar and optical images of ship wakes, development of physical mechanisms of wind wave suppression, etc. Analysis of the relevant literature reveals the necessity of setting reliable experiments to study the effect of damping of GCW due to turbulence. An original laboratory method of investigation of surface wave damping due to turbulence is described. The method is based on the parametric excitation of standing surface waves (so-called Faraday ripples) and simultaneous and independent generation of turbulence. The wave damping coefficient is determined by a threshold acceleration corresponding to the surface wave parametric excitation. The disadvantages of the previously used methods are eliminated or significantly reduced in the presented method, and the results are formulated in terms of eddy viscosity. It is revealed that the eddy viscosity coefficient is proportional to the rms velocity of turbulent pulsations, and achieves a maximum as a function of GCW frequency, when the GCW wavelengths are of order of the scales of turbulent eddies. This effect has never been mentioned in the literature, since the previous studies were focused on the investigation of wave damping due to small-scale (relative to the GCW wavelengths) turbulence. Applications of the obtained results to real-sea conditions are discussed.

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.

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5

Similar content being viewed by others

References

Download references

Acknowledgements

We are grateful to Tatiana Lazareva for her help in the experiment. This research was funded by the Russian Science Foundation (Project RSF 18-77-10066).

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Olga Shomina.

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

Shomina, O., Kapustin, I. & Ermakov, S. Damping of gravity–capillary waves on the surface of turbulent fluid. Exp Fluids 61, 184 (2020). https://doi.org/10.1007/s00348-020-03022-5

Download citation

  • Received:

  • Revised:

  • Accepted:

  • Published:

  • DOI: https://doi.org/10.1007/s00348-020-03022-5

Navigation