Deniz üstü yüzer rüzgar türbinlerinin sayısal modelleme ıle incelenmesi ve yeni bir yüzer platformun geliştirilmesi
نام عام مواد
[Thesis]
نام نخستين پديدآور
Alkarem, Yüksel
نام ساير پديدآوران
Özbahçeci, Bergüzar
وضعیت نشر و پخش و غیره
نام ناشر، پخش کننده و غيره
Izmir Institute of Technology (Turkey)
تاریخ نشرو بخش و غیره
2020
يادداشت کلی
متن يادداشت
166 p.
یادداشتهای مربوط به پایان نامه ها
جزئيات پايان نامه و نوع درجه آن
Master's
کسي که مدرک را اعطا کرده
Izmir Institute of Technology (Turkey)
امتياز متن
2020
یادداشتهای مربوط به خلاصه یا چکیده
متن يادداشت
Harvesting offshore wind energy has been a primary stimulus for research recently as more shreds of evidence show the highly unexploited potential it carries. As water depth increases, fixed-bottom foundations become impractical and floating solutions must be adopted for offshore wind turbines. The underlying causes of high demands to reach accurate numerical simulation of floating offshore wind turbines are a plethora. The system's nonlinearities impose a serious challenge on the estimation of system responses, power production, and fatigue loading. Proper simulation of environmental stochastic loading from wind and wave plays a critical role in the analysis of such systems. The floating platforms govern the integrity of the entire system. There are different kinds of existing platforms like semi-submersible, spar, tension leg, etc. However, attempts to reduce hydrodynamic and aerodynamic-induced mean and dynamic excitations continue. This study examines the performance of a semi-submersible platform numerically using a hydro-aero coupled model and compares the results with the benchmark experimental data and other numerical model studies. A comparative study shows the present model depending on the second-order potential theory, and the dynamics of the mooring cables agrees well with the experimental results. A spar type platform is also modeled for mid-depth conditions. Moreover, a novel floating platform is developed and compared to existing alternatives in the field. The proposed platform achieves better stability in terms of mean offsets and dynamic oscillations, especially in pitch at extreme conditions. Another extinct feature of the design is the diminished tensile strain in the mooring lines for a relatively shorter cable length and equal linearized horizontal stiffness.
اصطلاحهای موضوعی کنترل نشده
اصطلاح موضوعی
Alternative energy
اصطلاح موضوعی
Civil engineering
اصطلاح موضوعی
Computer aided engineering--CAE
اصطلاح موضوعی
Equilibrium
اصطلاح موضوعی
Experiments
اصطلاح موضوعی
Flow velocity
اصطلاح موضوعی
Fluid-structure interaction
اصطلاح موضوعی
Fourier transforms
اصطلاح موضوعی
Offshore
اصطلاح موضوعی
Optimization
اصطلاح موضوعی
Renewable resources
اصطلاح موضوعی
Turbines
اصطلاح موضوعی
Values
اصطلاح موضوعی
Wind farms
اصطلاح موضوعی
Wind power
نام شخص به منزله سر شناسه - (مسئولیت معنوی درجه اول )