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Experiment on surface wake of internal waves generated by underwater vehicle in stratified fluids

Journal of Hydrodynamics volume 34, pages 277–285 (2022)Cite this article

Abstract

The surface flow field of internal waves generated by the underwater vehicle is very weak. In order to study the characteristics of the surface wake of internal waves, a surface particle image velocimetry (PIV) technique which can be used to measure the flow field in the order of mm/s is developed. Breakthrough is made with respect to the key technique measuring the micro-velocity flow field of internal waves on the water surface in stratified fluids. The wake generated by SUBOFF model is measured in stratified fluid tank, and the surface flow field of internal waves is successfully measured for the first time. The experimental results are compared with predicted results by the classical Tuck’s internal wave theory. The results show the characteristics of the surface wake signature of internal waves and the variation of the angle between internal wave beams and the surface flow velocity of internal wave with the towing speed of the model are in good agreement. It provides support for further research on wake signature remote sensing of internal waves in laboratory.

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Authors and Affiliations

  1. China Ship Scientific Research Center, Wuxi, 214082, China

    Zhi-chong Yao, Jun Zhang, De-bao Gao, Chuan-qi Liu & Fang-wen Hong

  2. TaiHu Laboratory on Deep Sea Technology and Science, Wuxi, 214082, China

    Zhi-chong Yao & Chuan-qi Liu

  3. National Key Laboratory on Ship Vibration and Noise, Wuxi, 214082, China

    Jun Zhang, De-bao Gao & Fang-wen Hong

Authors
  1. Zhi-chong Yao
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  2. Jun Zhang
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  3. De-bao Gao
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  4. Chuan-qi Liu
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  5. Fang-wen Hong
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Correspondence to Zhi-chong Yao.

Additional information

Project supported by the National Natural Science Foundation of China (Grant No. 51779232).

Biography: Zhi-chong Yao (1980-), Male, Ph. D., Professor

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Yao, Zc., Zhang, J., Gao, Db. et al. Experiment on surface wake of internal waves generated by underwater vehicle in stratified fluids. J Hydrodyn 34, 277–285 (2022). https://doi.org/10.1007/s42241-022-0022-7

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  • DOI: https://doi.org/10.1007/s42241-022-0022-7

Key words

  • Stratified fluids
  • surface wake signature
  • internal waves
  • experimental research