مدلسازی عددی پیشروی موج بر روی دیوار ساحلی و موج‌شکن مستغرق با استفاده از مدل WCSPH

نوع مقاله: مقاله پژوهشی

نویسندگان

1 استادیار گروه مهندسی عمران، دانشکده فنی مهندسی، دانشگاه خلیج فارس، خیابان شهید ماهینی، بوشهر

2 دانشیار مهندسی سواحل، دانشگاه صنعتی امیرکبیر

چکیده

در این مقاله از یک مدل عددی لاگرانژی بدون شبکه، به نام مدل هیدرودینامیک ذرات هموار نسبتاً تراکم‌پذیر (WCSPH) برای شبیه سازی پیشروی موج تنها بر روی دیوار ساحلی شیب‌دار و همچنین پیشروی موج منظم بر روی موج‌شکن مستغرق نفوذناپذیر استفاده شده است. برای شبیه‌سازی آشفتگی سیال، از مدل آشفتگی SPS که بوسیله تئوری شبیه‌سازی گردابه‌ای بزرگ (LES) بدست آمده، استفاده شده است. در تحقیق حاضر، برای بررسی دقت مدل در شبیه‌سازی پیشروی موج بر روی موج‌شکن مستغرق نفوذناپذیر و دیوار ساحلی، نتایج مدل عددی حاضر با نتایج آزمایشگاهی مورد مقایسه قرار گرفته است. همچنین نتایج مدل عددی حاضر با نتایج مدل عددی Shen وهمکارانش (2004) مورد مقایسه قرار گرفت، که نتایج مدل عددی حاضر از تطابق بهتری با نتایج آزمایشگاهی برخوردار بود. نتایج این تحقیق نشان داد که مدل عددی تهیه شده، ابزاری قوی جهت شبیه‌سازی پیشروی موج بر روی سازه های ساحلی می‌باشد.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Numerical modeling of wave propagation over sea wall and submerged breakwater using WCSPH

نویسندگان [English]

  • Amin Mahmoudi 1
  • Mohammad Javad Ketabdari 2
1 Civil Engineering Department, Persian Gulf University,, Bushehr
2 Faculty of Marine Technology, Amirkabir University of Technology, Tehran
چکیده [English]

In this paper, a linear Lagrangian numerical model is used for simulating the solitary wave propagation over the sloped sea wall, as well as the regular wave propagation over an Impermeable submerged breakwater, called the relatively compact (GCM) hydrodynamic model of relatively compact particles (WCSPH). To simulate fluid turbulence, the SPS turbulence model, which was obtained by large eddy simulation (LES) approach, was used. The results of numerical simulations were compared with laboratory experiments. Also, the results of present numerical model were compared with the numerical model Shen et al. (2004). The results shown, the WCSPH computations produce better results than those of model Shen et al. (2004), with respect to the experimental data. The results of this study show that WCSPH method provides a useful tool to investigate the wave propagation over coastal structures.

کلیدواژه‌ها [English]

  • Numerical modelling
  • smoothed particle hydrodynamic
  • sea wall
  • submerged breakwaters
  • wave propagation
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