Wind resource assessment and wind farm modeling in complex terrain : Bodrum peninsula case study using computational fluid dynamics

Download
2013
Özdede, Semih
Wind Resource Assessment studies have become remarkable research tool to determine the possible Wind Farm locations in last two decades. Wind Farm Modeling is essential to pinpoint the wind turbines in selected region by simulating the possible layout designs of Wind Farm in advance. These studies provide improvements in cost efficiency and Annual Energy Production with the aid of Computational Fluid Dynamics (CFD). In this study, the methodologies of Wind Resource Assessment and Wind Farm Modeling are examined with a case study. The methodologies are applied to Bodrum Peninsula which is defined as a complex terrain. This topography is composed of urban, suburban, hills, different shape of islands and coastal areas. Besides these, it has various roughness classes and very high energy potential according to previous researches. WindSim program which is one of the developed research tools for this topic is utilized to perform all the necessary steps. Embedded CFD program in WindSim computes Reynolds Averaged Navier Stokes equations by using finite volume methods. Sector-wise steady state simulations are performed to predict the flow over the terrain. Annual Energy Production and wake losses are investigated for Onshore and Offshore Wind Farms. Parametric study is conducted for the variations of crosswind and downwind spacing between the wind turbines in the wind farm layouts. In parallel, AEROWIND, in-house code, is developed to perform data analysis of site information, aerodynamics of wind turbine, energy and economy analysis. This theoretical research program reduces the wind farm layout design time.

Suggestions

Ice accretion prediction on wind turbine blades and aerodynamic shape optimization for minimizing power production losses
Yırtıcı, Özcan; Tuncer, İsmail Hakkı; Özgen, Serkan; Department of Aerospace Engineering (2018)
The global wind energy resources are plentiful in cold climate regions and mountainous areas, which cause ice formation on wind turbine blades. Prediction of ice accretion on wind turbine blades makes it possible to estimate the power losses due to icing. Ice accretion on wind turbine blades is responsible for significant increases in aerodynamic drag and decreases in aerodynamic lift, and may even cause premature flow separation. All these events create power losses and the amount of power loss depends on ...
Wind energy assessment in Turkey
Taşdemiroğlu, Erol (Elsevier BV, 1987-1)
Long-term wind speed measurements from 117 stations in Turkey have been evaluated in order to find prospective sites for building large scale wind-power machines. Based on these measurements, monthly mean isopleth maps as well as an annual mean density map for wind speed have been produced. Using the Weibull distributions, the available annual mean power and the variations with altitude have been computed for the selected stations. Finally the applicability of these systems to this country is discussed.
Comparative study of transient and quasi-steady aeroelastic analysis of composite wind turbine blade in steady wind conditions
Sargın, Hakan; Kayran, Altan; Department of Aerospace Engineering (2014)
The objective of this study is to conduct a comparative study of the transient and quasi-steady aeroelastic analysis of a composite wind turbine blade in steady wind conditions. Transient analysis of the wind turbine blade is performed by the multi-body dynamic code Samcef Wind Turbine which uses blade element momentum theory for aerodynamic load calculation. For this purpose, a multi-body wind turbine model is generated with rigid components except for the turbine blades. For the purposes of the study, a r...
Optimal siting and sizing of wind farms
CETINAY, Hale; KUIPERS, Fernando A.; Güven, Ali Nezih (2017-02-01)
In this paper, we propose a novel technique to determine the optimal placement of wind farms, thereby taking into account wind characteristics and electrical grid constraints. We model the long-term variability of wind speed using a Weibull distribution according to wind direction intervals, and formulate the metrics that capture wind speed characteristics at a specific location, namely the arithmetic mean of wind speed, the theoretical wind power density and the capacity factor of a prospective wind power ...
Offshore wind farm site selection for Aegean and Mediterranean Sea, Turkey
Yıldız, Hatice Kübra; Oğuz, Elif; Huvaj Sarıhan, Nejan; Department of Civil Engineering (2021-8-26)
This thesis was focused on investigating potential sites in the Aegean and Mediterranean Sea for offshore wind turbines considering a number of criteria such as water depth, wind speed, grid connectivity, etc. Prior to that, all major floating offshore wind turbine installations in Europe and across the World were reviewed. The current status of the offshore wind industry in terms of technology and supporting mechanisms were summarized. Following this, potential sites were mapped using collected data from a...
Citation Formats
S. Özdede, “ Wind resource assessment and wind farm modeling in complex terrain : Bodrum peninsula case study using computational fluid dynamics ,” M.S. - Master of Science, Middle East Technical University, 2013.