نوع مقاله: مقاله پژوهشی

نویسندگان

1 استادیار دانشکده مهندسی دریا دانشگاه امیرکبیر

2 دانشجوی دکتری، دانشکده مهندسی دریا دانشگاه صنعتی امیرکبیر

چکیده

نگرانی های زیست محیطی و تقاضای در حال رشد جهان به انرژی باعث افزایش علاقمندی به فن آوری های انرژی های تجدید پذیر شده است. تمرکز بر مطالعات تئوری جذب نقطه ای (متمرکز) انرژی موج اقیانوس از حدود چهار دهه پیش آغاز گردیده و کمتر از دو دهه تمرکز بر مطالعه و طراحی مبدل های شناور جاذب نقطه ای مورد توجه محققین بوده است. امروزه، پژوهش ها در بهینه سازی و اصلاح روش های کنونی، ابداع روش های جدید و پیش بینی راندمان در مبدل های جاذب نقطه ای مطرح است.
در این مقاله؛ اثرات سیستم مهار پایه کششی بر عملکرد هیدرودینامیک یک مبدل جاذب نقطه ای دو بدنه مورد بررسی قرار گرفته است. در مدل سازی مبدل شامل دو بدنه: بویه جاذب انرژی و بدنه مغروق است، اتصال این دو با یک سیستم فنر خطی مدل سازی شده است و انرژی استحصالی حاصل حرکت نسبی هیو بین دو بدنه است. تحلیل هیدرودینامیک در حوزه زمان انجام شده و نتایج، بیانگر تاثیرات مثبت اعمال لنگر پایه کششی بر افزایش حرکت نسبی هیو بین دو بدنه مبدل و افزایش 6.2 درصدی انرژی استحصالی از موج می باشد.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Investigation of tension leg effects on the dynamic response of point absorber wave energy converter

نویسندگان [English]

  • Mahmood ghiasi 1
  • M Nazari 2

1 Assistant Professor

2 PHD student

چکیده [English]

Environmental concerns have increased the interest to renewable energy technologies. Theoretical Studies on the point absorber theory of ocean wave energy started about four decades ago and less than two decades, the studies are focused on the designing of the point absorber wave energy converters.
Today, researches are in the optimization and modification of existing methods, the innovation of new approaches and the forecast of the efficiency of the point absorber converters.
In this paper, the effects of tension leg system on the hydrodynamic performance of a two-body floating-point absorber wave energy system are studied. In modeling, the two-body converter consists of: the immersed body and buoy, which are connected through a linear mass–spring system to represent the power take-off (PTO) mechanism. The hydrodynamic analysis is performed in the time domain. The results show the positive effects of tension leg anchor on the increase of relative motion between the immersed body and buoy and the increase of converter efficiency up to 6.2 percent.

کلیدواژه‌ها [English]

  • Wave Energy
  • Potential flow theory
  • Tension leg anchor
  • Absorber point converter

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