Numerical investigation of drag induced by Turbulent Sea Water flowing over a Flat Plate with simulated Barnacles. Masters thesis, King Fahd University of Petroleum and Minerals.
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Arabic Abstract
ي Biofouling ( بحسلا ةمواقم ةدايز ىلإ يدؤي ثيح ،نفسلل اريبك ايدحت ) drag نم للقي امم ،) برطضملا قفدتلا ةاكاحم مت ،لمعلا اذه يف .ةيليغشت رطاخم لكشيو ،ةئيبلا ىلع ابلس رثؤيو ،دوقولا كلاهتسا ةءافك نود مجحلا سفن :طامنأ ةثلاثل اقفو ،ليقنربلا لكش نم ةاحوتسم ةنوشخ نم ةفلتخم بسنب ةاطغم ةيوتسم ةحيفص قوف ( لخادت SSNO ( لخادت نود ةفلتخم ماجحأ ،) DSNO ( لخادت عم ةفلتخم ماجحأو ،) DSO .) ،ةنوشخلاب ةيطغتلا ةبسن ةدايز عم ةمواقملا تعفترا ثيح ،بحسلا ةمواقم يف يطخ ريغ هاجتا دوجو جئاتنلا ترهظأ دنع اهتورذ تغلبو 20 و ،ةلخادتملا ريغ ةنوشخلا يتلاح يف % 30 ،بسنلا هذه دعب .ةلخادتملا ةنوشخلا ةلاح يف % خلا رصانع نيب ليلظتلا ريثأتل ةجيتن بحسلا ةمواقم تضفخنا ( يقلازنا قفدت روهظو ةنوش skimming flow مت .) لاودو ،ةعرسلا تافلم طسوتم ليلحت للاخ نم جئاتنلا هذه ديكأت Hama .قفدتلا تاروصت ىلإ ةفاضلإاب ،ةلباقملا ( ةيباسحلا عئاوملا تايكيمانيد ىلع دمتعت ةلثامم تايجهنم عم جئاتنلا هذه قفاوتت CFD يشيبوستيم ةكرش اهتدمتعا ) ىوصقلا ةدايزلا لحارمو جرحلا ثولتلا تافاثك ديدحت للاخ نمو .ةيعانصلا اهتيمهأ نم ززعي امم ،ةليقثلا تاعانصلل يف ةحفاكمل ةلاعف تايجيتارتساو ةيئاقو ةنايص لوادج عضو يف رشابم لكشب جئاتنلا هذه مهست نأ نكمي ،بحسلا ةمواقم .يجولويبلا ثولتلا
English Abstract
Biofouling is a serious challenge for ships as it increases drag, reducing fuel efficiency and having a negative environmental impact, and creates operational hazards. This work simulated turbulent flow over a flat plate with different percent coverage of barnacle inspired roughness: Same Size Non-Overlapping (SSNO), Different Size Non-Overlapping (DSNO), and Different Size Overlapping (DSO). Results showed a non-monotonic trend in drag, initially increase with roughness coverage and peaking at 20% for non-overlapping roughness and 30% for the overlapping case. Beyond these coverages, drag decreased due to roughness element sheltering and the onset of skimming flow. These results were confirmed with mean velocity profiles, analysis of the corresponding Hama functions, and flow visualizations. These findings align with similar CFD-driven approaches adopted by Mitsubishi Heavy Industries, reinforcing their industrial relevance. By identifying critical fouling densities and drag thresholds, the results can directly be a vital input to preventive maintenance schedules and antifouling strategies.
| Item Type: | Thesis (Masters) |
|---|---|
| Subjects: | Engineering General Research Mechanical |
| Department: | College of Engineering and Physics > Mechanical Engineering |
| Committee Advisor: | Boom, Pieter David |
| Committee Members: | Shuja, Shahzada Zaman and Mansour, Rached Ben |
| Depositing User: | AVI KHANNA (g202216020) |
| Date Deposited: | 17 Jun 2025 07:49 |
| Last Modified: | 17 Jun 2025 07:49 |
| URI: | http://eprints.kfupm.edu.sa/id/eprint/143550 |
Available Versions of this Item
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Numerical investigation of drag induced by Turbulent Sea Water flowing over a Flat Plate with simulated Barnacles. (deposited 23 Jun 2025 06:45)
- Numerical investigation of drag induced by Turbulent Sea Water flowing over a Flat Plate with simulated Barnacles. (deposited 17 Jun 2025 07:49) [Currently Displayed]
