Laboratory experiment is an important method in the study of ocean internal waves, and the schlieren technique is an effective way to observe the internal waves in the laboratory. The digital synthetic schlieren technique is mostly applied to two-dimensional density-stratified flows. The technique is improved by setting up the Charge Coupled Device (CCD) vertically to shoot the reference images in this research. Then the three-dimensional density-stratified flows can be detected in this way. The authors attempt a set of lab experiments to verify the rationality of this technique. There is a horizontally moving spherule with constant velocity at the interface of the two-layer stratified water in the experiment. The moving spherule generates internal waves between the two-layer fluids. The authors successfully capture the three-dimensional structure of the internal waves generated by the horizontally moving spherule. It is obvious that the internal waves have characteristics of the Kelvin Internal Wake and the quantitative parameters agree well with the previous studies. The experimental results reveal that the improved digital schlieren technique is rational and feasible in the lab internal waves observations. The detailed three-dimensional structure of the internal waves, the internal wave energy distribution and propagation in the whole field and the nonlinear interactions between the internal waves can be further studied through this method in the future.
| Published in | Earth Sciences (Volume 7, Issue 6) |
| DOI | 10.11648/j.earth.20180706.15 |
| Page(s) | 283-288 |
| Creative Commons |
This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
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Copyright © The Author(s), 2024. Published by Science Publishing Group |
Internal Waves, Synthetic Schlieren, Kelvin Internal Wake
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APA Style
Qingjun Meng, Yanzhen Gu, Peiliang Li, Xinzhu Wu. (2018). A New Application of the Digital Synthetic Schlieren in Lab Experiments of the Internal Waves. Earth Sciences, 7(6), 283-288. https://doi.org/10.11648/j.earth.20180706.15
ACS Style
Qingjun Meng; Yanzhen Gu; Peiliang Li; Xinzhu Wu. A New Application of the Digital Synthetic Schlieren in Lab Experiments of the Internal Waves. Earth Sci. 2018, 7(6), 283-288. doi: 10.11648/j.earth.20180706.15
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Download@article{10.11648/j.earth.20180706.15,
author = {Qingjun Meng and Yanzhen Gu and Peiliang Li and Xinzhu Wu},
title = {A New Application of the Digital Synthetic Schlieren in Lab Experiments of the Internal Waves},
journal = {Earth Sciences},
volume = {7},
number = {6},
pages = {283-288},
doi = {10.11648/j.earth.20180706.15},
url = {https://doi.org/10.11648/j.earth.20180706.15},
eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.earth.20180706.15},
abstract = {Laboratory experiment is an important method in the study of ocean internal waves, and the schlieren technique is an effective way to observe the internal waves in the laboratory. The digital synthetic schlieren technique is mostly applied to two-dimensional density-stratified flows. The technique is improved by setting up the Charge Coupled Device (CCD) vertically to shoot the reference images in this research. Then the three-dimensional density-stratified flows can be detected in this way. The authors attempt a set of lab experiments to verify the rationality of this technique. There is a horizontally moving spherule with constant velocity at the interface of the two-layer stratified water in the experiment. The moving spherule generates internal waves between the two-layer fluids. The authors successfully capture the three-dimensional structure of the internal waves generated by the horizontally moving spherule. It is obvious that the internal waves have characteristics of the Kelvin Internal Wake and the quantitative parameters agree well with the previous studies. The experimental results reveal that the improved digital schlieren technique is rational and feasible in the lab internal waves observations. The detailed three-dimensional structure of the internal waves, the internal wave energy distribution and propagation in the whole field and the nonlinear interactions between the internal waves can be further studied through this method in the future.},
year = {2018}
}
TY - JOUR T1 - A New Application of the Digital Synthetic Schlieren in Lab Experiments of the Internal Waves AU - Qingjun Meng AU - Yanzhen Gu AU - Peiliang Li AU - Xinzhu Wu Y1 - 2018/12/11 PY - 2018 N1 - https://doi.org/10.11648/j.earth.20180706.15 DO - 10.11648/j.earth.20180706.15 T2 - Earth Sciences JF - Earth Sciences JO - Earth Sciences SP - 283 EP - 288 PB - Science Publishing Group SN - 2328-5982 UR - https://doi.org/10.11648/j.earth.20180706.15 AB - Laboratory experiment is an important method in the study of ocean internal waves, and the schlieren technique is an effective way to observe the internal waves in the laboratory. The digital synthetic schlieren technique is mostly applied to two-dimensional density-stratified flows. The technique is improved by setting up the Charge Coupled Device (CCD) vertically to shoot the reference images in this research. Then the three-dimensional density-stratified flows can be detected in this way. The authors attempt a set of lab experiments to verify the rationality of this technique. There is a horizontally moving spherule with constant velocity at the interface of the two-layer stratified water in the experiment. The moving spherule generates internal waves between the two-layer fluids. The authors successfully capture the three-dimensional structure of the internal waves generated by the horizontally moving spherule. It is obvious that the internal waves have characteristics of the Kelvin Internal Wake and the quantitative parameters agree well with the previous studies. The experimental results reveal that the improved digital schlieren technique is rational and feasible in the lab internal waves observations. The detailed three-dimensional structure of the internal waves, the internal wave energy distribution and propagation in the whole field and the nonlinear interactions between the internal waves can be further studied through this method in the future. VL - 7 IS - 6 ER -
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