Experimental and Numerical Investigation on Wave Interaction with Submerged Breakwater

Md. Ataur Rahman; Silwati Al Womera

doi:doi:10.11648/j.wros.20130206.11

| Peer-Reviewed

Experimental and Numerical Investigation on Wave Interaction with Submerged Breakwater

Md. Ataur Rahman, Silwati Al Womera

Published in Journal of Water Resources and Ocean Science (Volume 2, Issue 6)

Received: 7 October 2013 Published: 10 November 2013

Views: Downloads:

Download PDF

Share This Article

Twitter
Linked In
Facebook

Abstract

Experimental studies are carried out in a two-dimensional wave flume (21.3 m long, 0.76 m wide and 0.74 m deep) to investigate the performance of rectangular type submerged breakwater. A set of experiments are carried out at 50 cm still water depth with fixed submerged breakwaters of three different heights (30 cm, 35 cm and 40 cm) for five different wave periods (1.5 sec, 1.6 sec, 1.7 sec, 1.8 sec and 2.0 sec) in the same wave flume. For fifteen run conditions, water surface elevations are collected at six different locations both in front of and behind the breakwater. Also the type of wave breaking and position of wave breaking are simultaneously recorded with a digital video camera. Effects of breakwater height and length along the wave direction on wave height reduction are analyzed. It is found that both the relative structure height (hs/h) and relative breakwater width (B/L) have strong influence in reducing transmitted wave height. Experimental analysis prevails that the reduction of transmitted wave height are 50%, 58% and 68% for relative structure height (hs/h) of 0.6, 0.7 and 0.8 respectively, for a particular value of relative breakwater width (B/L =0.35). Also, the reduction of transmitted wave height is 32% and 50% for relative breakwater width (B/L) of 0.25 and 0.4 respectively, for a particular value of relative structure height (hs/h =0.6). A two-dimensional numerical model based on the SOLA-VOF method has been developed in this study to investigate the wave interaction with fixed submerged breakwater. The developed model can simulate time series water surface profiles, water particle velocity field, VOF function F, pressure around a breakwater. The water surface profiles and wave breaking positions in various wave conditions simulated by the developed numerical model show good agreement with the experimentally measured values. The numerical model developed in this study is expected to serve as tool to analyze wave deformation due to submerged breakwater and will be important for designing submerged breakwater as a coastal protection measure.

Published in	Journal of Water Resources and Ocean Science (Volume 2, Issue 6)
DOI	10.11648/j.wros.20130206.11
Page(s)	155-164
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.
Copyright	Copyright © The Author(s), 2013. Published by Science Publishing Group

Keywords

Experimental Investigation, Submerged Breakwater, Wave-Structure Interaction, SOLA-VOF

References

[1]	Al-Banna, K. and Liu, P. (2007). "Numerical study on the hydraulic performance of submerged porous breakwater under solitary wave attack". Journal of Coastal Research, Vol. 50, pp. 201-205.
[2]	Brorsen, M and Larsen, J. (1987) "Source generation of nonlinear gravity waves with the boundary integral equation method," Coastal Engineering, Elsevier, Vol. 11, Amsterdam, pp. 93–113.
[3]	Cheng, S., Liu, S. and Zheng, Y. (2003) "Application Study on Submerged Breakwaters used for Coastal Protection," Proceedings of International Conference on Estuaries and Coasts, China.
[4]	Golshani. A., Mizutani. N and Hur. D. S. (2003) "Three-dimensional Analysis of Non-linear Interaction between water waves and Vertical Permeable Breakwater", Journal of Coastal Engineering, World Sientific, Vol. 45, pp. 329-3451-28.
[5]	Hinatsu, M. (1992). "Numerical simulation of unsteady viscous non-linear waves using moving grid system fitted on a free surface." J. Kansai Soc. Naval Arch. Japan 217: 1-11.
[6]	Hirt, C.W. and Nichols, B.D. (1981). "Volume of fluid (VOF) method for the dynamics of free boundaries," J. Comp. Physics, Vol. 39, pp. 201–225.
[7]	Hur, D.S. (2004). "Deformation of Multi-directional Random waves passing over an impermeable Submerged Breakwater installed on Sloping bed", Journal of Ocean Engineering, Elsevier, Vol. 31, pp. 1295-1311.
[8]	Hur, D.S. and Mizutani, N. (2003). "Numerical estimation of wave forces acting on a three-dimensional body on submerged breakwater", Journal of Coastal Engineering, Elsevier, Vol. 47, pp. 329-345.
[9]	Hur, D.S., Kawashima. N. and Iwata. K. (2003). "Experimental study of the Breaking Limit of Multi-directional Random waves passing over an Impermeable Submerged Breakwater", Journal of Ocean Engineering, Sciencedirect, Vol. 30, pp. 1923-1940.
[10]	Lee, C., Shen, M. and Huang, C. (2007). "Transformation of irregular waves propagating over a submerged breakwater", Proceedings of the 12th ISOPE Conference.
[11]	Mizutani, N., Rufin, T.F. and Iwata, K. (1994), "Stability of Armor Stones of a Submerged Wide-Crown Breakwater", Proceedings of the 24th International Conference Coastal Engineering, Kobe-Japan, 1994, pp 1439-1453.
[12]	Mizutani. M, Mostafa, A. M. and Iwata, K. (1998). "Non-linear Regular wave, Submerged Breakwater and Seabed Dynamic Interaction", Journal of Coastal Engineering, Elsevier, Vol. 33, pp. 177-202.
[13]	Nichols, B.D. and Hirt, C.W. (1975), "Methods for Calculating Multidimensional, Transient Free Surface Flows Past Bodies", Proc. of the First International Conf. On Num. Ship Hydrodynamics, Gaithersburg, ML.
[14]	Ohyama, T. and Nadaoka, K. (1991). "Development of a numerical wave tank for analysis of nonlinear and irregular wave field." Fluid Dynamics Research 8: 231-251
[15]	Rahman, M.A., Mizutani, N. and Kawasaki, K. (2006). "Numerical modeling of dynamic responses and mooring forces of submerged floating breakwater", Journal of Coastal Engineering, Elsevier, Vol. 53, pp. 799-815.
[16]	Rufin, T.M., Mizutani. N. and Iwata. K. (1996) "Estimation method of Stable Weight of Spherical Armor unit of a Submerged Wide-crown Breakwater", Journal of Coastal Engineering, Elsevier, Vol. 28, pp. 183-228.
[17]	Sakakiyama, T. R. and Kajima, R. (1992). "Numerical simulation of nonlinear wave interacting with permeable breakwaters," Proc. 22nd Int. Conference on Coastal Engineering, ASCE, Venice, pp. 1517–1530.

Cite This Article

Plain Text BibTeX RIS

APA Style

Md. Ataur Rahman, Silwati Al Womera. (2013). Experimental and Numerical Investigation on Wave Interaction with Submerged Breakwater. Journal of Water Resources and Ocean Science, 2(6), 155-164. https://doi.org/10.11648/j.wros.20130206.11

Copy | Download

ACS Style

Md. Ataur Rahman; Silwati Al Womera. Experimental and Numerical Investigation on Wave Interaction with Submerged Breakwater. J. Water Resour. Ocean Sci. 2013, 2(6), 155-164. doi: 10.11648/j.wros.20130206.11

Copy | Download

AMA Style

Md. Ataur Rahman, Silwati Al Womera. Experimental and Numerical Investigation on Wave Interaction with Submerged Breakwater. J Water Resour Ocean Sci. 2013;2(6):155-164. doi: 10.11648/j.wros.20130206.11

Copy | Download

@article{10.11648/j.wros.20130206.11,
  author = {Md. Ataur Rahman and Silwati Al Womera},
  title = {Experimental and Numerical Investigation on Wave Interaction with Submerged Breakwater},
  journal = {Journal of Water Resources and Ocean Science},
  volume = {2},
  number = {6},
  pages = {155-164},
  doi = {10.11648/j.wros.20130206.11},
  url = {https://doi.org/10.11648/j.wros.20130206.11},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.wros.20130206.11},
  abstract = {Experimental studies are carried out in a two-dimensional wave flume (21.3 m long, 0.76 m wide and 0.74 m deep) to investigate the performance of rectangular type submerged breakwater. A set of experiments are carried out at 50 cm still water depth with fixed submerged breakwaters of three different heights (30 cm, 35 cm and 40 cm) for five different wave periods (1.5 sec, 1.6 sec, 1.7 sec, 1.8 sec and 2.0 sec) in the same wave flume. For fifteen run conditions, water surface elevations are collected at six different locations both in front of and behind the breakwater. Also the type of wave breaking and position of wave breaking are simultaneously recorded with a digital video camera. Effects of breakwater height and length along the wave direction on wave height reduction are analyzed. It is found that both the relative structure height (hs/h) and relative breakwater width (B/L) have strong influence in reducing transmitted wave height. Experimental analysis prevails that the reduction of transmitted wave height are 50%, 58% and 68% for relative structure height (hs/h) of 0.6, 0.7 and 0.8 respectively, for a particular value of relative breakwater width (B/L =0.35). Also, the reduction of transmitted wave height is 32% and 50% for relative breakwater width (B/L) of 0.25 and 0.4 respectively, for a particular value of relative structure height (hs/h =0.6). A two-dimensional numerical model based on the SOLA-VOF method has been developed in this study to investigate the wave interaction with fixed submerged breakwater. The developed model can simulate time series water surface profiles, water particle velocity field, VOF function F, pressure around a breakwater. The water surface profiles and wave breaking positions in various wave conditions simulated by the developed numerical model show good agreement with the experimentally measured values. The numerical model developed in this study is expected to serve as tool to analyze wave deformation due to submerged breakwater and will be important for designing submerged breakwater as a coastal protection measure.},
 year = {2013}
}

Copy | Download

TY  - JOUR
T1  - Experimental and Numerical Investigation on Wave Interaction with Submerged Breakwater
AU  - Md. Ataur Rahman
AU  - Silwati Al Womera
Y1  - 2013/11/10
PY  - 2013
N1  - https://doi.org/10.11648/j.wros.20130206.11
DO  - 10.11648/j.wros.20130206.11
T2  - Journal of Water Resources and Ocean Science
JF  - Journal of Water Resources and Ocean Science
JO  - Journal of Water Resources and Ocean Science
SP  - 155
EP  - 164
PB  - Science Publishing Group
SN  - 2328-7993
UR  - https://doi.org/10.11648/j.wros.20130206.11
AB  - Experimental studies are carried out in a two-dimensional wave flume (21.3 m long, 0.76 m wide and 0.74 m deep) to investigate the performance of rectangular type submerged breakwater. A set of experiments are carried out at 50 cm still water depth with fixed submerged breakwaters of three different heights (30 cm, 35 cm and 40 cm) for five different wave periods (1.5 sec, 1.6 sec, 1.7 sec, 1.8 sec and 2.0 sec) in the same wave flume. For fifteen run conditions, water surface elevations are collected at six different locations both in front of and behind the breakwater. Also the type of wave breaking and position of wave breaking are simultaneously recorded with a digital video camera. Effects of breakwater height and length along the wave direction on wave height reduction are analyzed. It is found that both the relative structure height (hs/h) and relative breakwater width (B/L) have strong influence in reducing transmitted wave height. Experimental analysis prevails that the reduction of transmitted wave height are 50%, 58% and 68% for relative structure height (hs/h) of 0.6, 0.7 and 0.8 respectively, for a particular value of relative breakwater width (B/L =0.35). Also, the reduction of transmitted wave height is 32% and 50% for relative breakwater width (B/L) of 0.25 and 0.4 respectively, for a particular value of relative structure height (hs/h =0.6). A two-dimensional numerical model based on the SOLA-VOF method has been developed in this study to investigate the wave interaction with fixed submerged breakwater. The developed model can simulate time series water surface profiles, water particle velocity field, VOF function F, pressure around a breakwater. The water surface profiles and wave breaking positions in various wave conditions simulated by the developed numerical model show good agreement with the experimentally measured values. The numerical model developed in this study is expected to serve as tool to analyze wave deformation due to submerged breakwater and will be important for designing submerged breakwater as a coastal protection measure.
VL  - 2
IS  - 6
ER  -

Copy | Download

Author Information

Md. Ataur Rahman

Dept. of Water Resources Engineering, Bangladesh University of Engineering and Technology, Dhaka, Bangladesh
Silwati Al Womera

Dept. of Water Resources Engineering, Bangladesh University of Engineering and Technology, Dhaka, Bangladesh

Download PDF

Sections

Plain Text BibTeX RIS

APA Style

Md. Ataur Rahman, Silwati Al Womera. (2013). Experimental and Numerical Investigation on Wave Interaction with Submerged Breakwater. Journal of Water Resources and Ocean Science, 2(6), 155-164. https://doi.org/10.11648/j.wros.20130206.11

Copy | Download

ACS Style

Md. Ataur Rahman; Silwati Al Womera. Experimental and Numerical Investigation on Wave Interaction with Submerged Breakwater. J. Water Resour. Ocean Sci. 2013, 2(6), 155-164. doi: 10.11648/j.wros.20130206.11

Copy | Download

AMA Style

Md. Ataur Rahman, Silwati Al Womera. Experimental and Numerical Investigation on Wave Interaction with Submerged Breakwater. J Water Resour Ocean Sci. 2013;2(6):155-164. doi: 10.11648/j.wros.20130206.11

Copy | Download

@article{10.11648/j.wros.20130206.11,
  author = {Md. Ataur Rahman and Silwati Al Womera},
  title = {Experimental and Numerical Investigation on Wave Interaction with Submerged Breakwater},
  journal = {Journal of Water Resources and Ocean Science},
  volume = {2},
  number = {6},
  pages = {155-164},
  doi = {10.11648/j.wros.20130206.11},
  url = {https://doi.org/10.11648/j.wros.20130206.11},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.wros.20130206.11},
  abstract = {Experimental studies are carried out in a two-dimensional wave flume (21.3 m long, 0.76 m wide and 0.74 m deep) to investigate the performance of rectangular type submerged breakwater. A set of experiments are carried out at 50 cm still water depth with fixed submerged breakwaters of three different heights (30 cm, 35 cm and 40 cm) for five different wave periods (1.5 sec, 1.6 sec, 1.7 sec, 1.8 sec and 2.0 sec) in the same wave flume. For fifteen run conditions, water surface elevations are collected at six different locations both in front of and behind the breakwater. Also the type of wave breaking and position of wave breaking are simultaneously recorded with a digital video camera. Effects of breakwater height and length along the wave direction on wave height reduction are analyzed. It is found that both the relative structure height (hs/h) and relative breakwater width (B/L) have strong influence in reducing transmitted wave height. Experimental analysis prevails that the reduction of transmitted wave height are 50%, 58% and 68% for relative structure height (hs/h) of 0.6, 0.7 and 0.8 respectively, for a particular value of relative breakwater width (B/L =0.35). Also, the reduction of transmitted wave height is 32% and 50% for relative breakwater width (B/L) of 0.25 and 0.4 respectively, for a particular value of relative structure height (hs/h =0.6). A two-dimensional numerical model based on the SOLA-VOF method has been developed in this study to investigate the wave interaction with fixed submerged breakwater. The developed model can simulate time series water surface profiles, water particle velocity field, VOF function F, pressure around a breakwater. The water surface profiles and wave breaking positions in various wave conditions simulated by the developed numerical model show good agreement with the experimentally measured values. The numerical model developed in this study is expected to serve as tool to analyze wave deformation due to submerged breakwater and will be important for designing submerged breakwater as a coastal protection measure.},
 year = {2013}
}

Copy | Download

TY  - JOUR
T1  - Experimental and Numerical Investigation on Wave Interaction with Submerged Breakwater
AU  - Md. Ataur Rahman
AU  - Silwati Al Womera
Y1  - 2013/11/10
PY  - 2013
N1  - https://doi.org/10.11648/j.wros.20130206.11
DO  - 10.11648/j.wros.20130206.11
T2  - Journal of Water Resources and Ocean Science
JF  - Journal of Water Resources and Ocean Science
JO  - Journal of Water Resources and Ocean Science
SP  - 155
EP  - 164
PB  - Science Publishing Group
SN  - 2328-7993
UR  - https://doi.org/10.11648/j.wros.20130206.11
AB  - Experimental studies are carried out in a two-dimensional wave flume (21.3 m long, 0.76 m wide and 0.74 m deep) to investigate the performance of rectangular type submerged breakwater. A set of experiments are carried out at 50 cm still water depth with fixed submerged breakwaters of three different heights (30 cm, 35 cm and 40 cm) for five different wave periods (1.5 sec, 1.6 sec, 1.7 sec, 1.8 sec and 2.0 sec) in the same wave flume. For fifteen run conditions, water surface elevations are collected at six different locations both in front of and behind the breakwater. Also the type of wave breaking and position of wave breaking are simultaneously recorded with a digital video camera. Effects of breakwater height and length along the wave direction on wave height reduction are analyzed. It is found that both the relative structure height (hs/h) and relative breakwater width (B/L) have strong influence in reducing transmitted wave height. Experimental analysis prevails that the reduction of transmitted wave height are 50%, 58% and 68% for relative structure height (hs/h) of 0.6, 0.7 and 0.8 respectively, for a particular value of relative breakwater width (B/L =0.35). Also, the reduction of transmitted wave height is 32% and 50% for relative breakwater width (B/L) of 0.25 and 0.4 respectively, for a particular value of relative structure height (hs/h =0.6). A two-dimensional numerical model based on the SOLA-VOF method has been developed in this study to investigate the wave interaction with fixed submerged breakwater. The developed model can simulate time series water surface profiles, water particle velocity field, VOF function F, pressure around a breakwater. The water surface profiles and wave breaking positions in various wave conditions simulated by the developed numerical model show good agreement with the experimentally measured values. The numerical model developed in this study is expected to serve as tool to analyze wave deformation due to submerged breakwater and will be important for designing submerged breakwater as a coastal protection measure.
VL  - 2
IS  - 6
ER  -

Copy | Download