國立虎尾科技大學 |

Dynamic Analysis of Floating Offshore Wind Turbines Under Extreme Operational Conditions.

紀錄類型:	書目-語言資料,手稿 : Monograph/item
正題名/作者:	Dynamic Analysis of Floating Offshore Wind Turbines Under Extreme Operational Conditions./
作者:	Bozzo, Ailish.
面頁冊數:	1 online resource (164 pages)
附註:	Source: Masters Abstracts International, Volume: 84-12.
Contained By:	Masters Abstracts International84-12.
標題:	Ocean engineering. -
電子資源:	click for full text (PQDT)
ISBN:	9798379628840

Dynamic Analysis of Floating Offshore Wind Turbines Under Extreme Operational Conditions.
Bozzo, Ailish.

Dynamic Analysis of Floating Offshore Wind Turbines Under Extreme Operational Conditions. - 1 online resource (164 pages)

Source: Masters Abstracts International, Volume: 84-12.

Thesis (M.S.)--University of New Hampshire, 2023.

Includes bibliographical references

Non-renewable energy sources such as fossil fuels have been the primary source of power generation around the world for decades. With these non-renewable energy sources rapidly depleting, the focus has switched to renewable, more environmentally friendly sources of energy, including wind energy. According to the Offshore Wind Market Report 2022, the U.S. has approximately 42 MW of offshore wind energy in operation, with 932 MW under construction and 18,581 MW in the permitting phase (Musial et al., 2022). Much of this potential comes from floating offshore wind turbines (FOWT) in waters greater than 60m of depth, where the winds are more consistent, and the turbines are larger with greater power generation potential. While researchers and industry professionals have identified the potential that FOWT can generate, past research has mainly focused on the response and optimization of the mooring lines and platforms under different loading conditions. Few studies have focused on the response of the turbine tower, specifically under extreme operating conditions. This study analyzed the behavior of a FOWT tower under extreme operating conditions. To do this, a 15 MW semi-submersible turbine was simulated at a location in the Gulf of Maine. Climate data was obtained from NOAA buoy data and extrapolated to represent conditions that the turbine would face in extreme operating conditions for a 50-year storm. These extreme conditions were used in conjunction with the aero-hydro-servo-elastic code, Horizontal Axis Wind Turbine Simulation Code 2nd Generation (HAWC2) from the Technical University of Denmark (DTU). A coupled time domain wind-wave analysis was used with a combination of different wind and wave inputs to determine how the turbine tower reacts to extreme loading. The parked condition load cases with 50-year extreme climate condition inputs were used to determine the resulting moments and stresses on the turbine tower. Results show that tower base yielding is the controlling factor in the design of a FOWT tower when compared to shear and fatigue stresses. In addition, an uncoupled time domain analysis was compared to the coupled analysis and showed that the uncoupled analysis overpredicts stresses in the tower base. While an uncoupled analysis may be suitable for preliminary design, it is important for final design to perform a coupled analysis for most accurate results. Lastly a sensitivity study was completed to analyze how the tower base reacts to changes in wind speed and wave height. It was concluded that a linear relationship between wind speed and average stress and wave height and average stress. However, changes in wind speed and wave height do not appear to have a significant effect on changes in design normal stress.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2024

Mode of access: World Wide Web

ISBN: 9798379628840Subjects--Topical Terms:

857658
Ocean engineering.
Subjects--Index Terms:

Wind turbinesIndex Terms--Genre/Form:

554714
Electronic books.

Dynamic Analysis of Floating Offshore Wind Turbines Under Extreme Operational Conditions.
LDR:04101ntm a22003737 4500 001 1141723
005 20240414211456.5
006 m o d
007 cr mn ---uuuuu
008 250605s2023 xx obm 000 0 eng d
020 $a 9798379628840
035 $a (MiAaPQ)AAI30423233
035 $a AAI30423233
040 $a MiAaPQ $b eng $c MiAaPQ $d NTU
100 1 $a Bozzo, Ailish. $3 1465673
245 1 0 $a Dynamic Analysis of Floating Offshore Wind Turbines Under Extreme Operational Conditions.
264 0 $c 2023
300 $a 1 online resource (164 pages)
336 $a text $b txt $2 rdacontent
337 $a computer $b c $2 rdamedia
338 $a online resource $b cr $2 rdacarrier
500 $a Source: Masters Abstracts International, Volume: 84-12.
500 $a Advisor: Azam, Yashar Eftekhar.
502 $a Thesis (M.S.)--University of New Hampshire, 2023.
504 $a Includes bibliographical references
520 $a Non-renewable energy sources such as fossil fuels have been the primary source of power generation around the world for decades. With these non-renewable energy sources rapidly depleting, the focus has switched to renewable, more environmentally friendly sources of energy, including wind energy. According to the Offshore Wind Market Report 2022, the U.S. has approximately 42 MW of offshore wind energy in operation, with 932 MW under construction and 18,581 MW in the permitting phase (Musial et al., 2022). Much of this potential comes from floating offshore wind turbines (FOWT) in waters greater than 60m of depth, where the winds are more consistent, and the turbines are larger with greater power generation potential. While researchers and industry professionals have identified the potential that FOWT can generate, past research has mainly focused on the response and optimization of the mooring lines and platforms under different loading conditions. Few studies have focused on the response of the turbine tower, specifically under extreme operating conditions. This study analyzed the behavior of a FOWT tower under extreme operating conditions. To do this, a 15 MW semi-submersible turbine was simulated at a location in the Gulf of Maine. Climate data was obtained from NOAA buoy data and extrapolated to represent conditions that the turbine would face in extreme operating conditions for a 50-year storm. These extreme conditions were used in conjunction with the aero-hydro-servo-elastic code, Horizontal Axis Wind Turbine Simulation Code 2nd Generation (HAWC2) from the Technical University of Denmark (DTU). A coupled time domain wind-wave analysis was used with a combination of different wind and wave inputs to determine how the turbine tower reacts to extreme loading. The parked condition load cases with 50-year extreme climate condition inputs were used to determine the resulting moments and stresses on the turbine tower. Results show that tower base yielding is the controlling factor in the design of a FOWT tower when compared to shear and fatigue stresses. In addition, an uncoupled time domain analysis was compared to the coupled analysis and showed that the uncoupled analysis overpredicts stresses in the tower base. While an uncoupled analysis may be suitable for preliminary design, it is important for final design to perform a coupled analysis for most accurate results. Lastly a sensitivity study was completed to analyze how the tower base reacts to changes in wind speed and wave height. It was concluded that a linear relationship between wind speed and average stress and wave height and average stress. However, changes in wind speed and wave height do not appear to have a significant effect on changes in design normal stress.
533 $a Electronic reproduction. $b Ann Arbor, Mich. : $c ProQuest, $d 2024
538 $a Mode of access: World Wide Web
650 4 $a Ocean engineering. $3 857658
650 4 $a Alternative energy. $3 1241221
650 4 $a Civil engineering. $3 561339
653 $a Wind turbines
653 $a Offshore wind turbines
653 $a Floating offshore wind turbines
655 7 $a Electronic books. $2 local $3 554714
690 $a 0543
690 $a 0363
690 $a 0547
710 2 $a University of New Hampshire. $b Civil Engineering. $3 1186059
710 2 $a ProQuest Information and Learning Co. $3 1178819
773 0 $t Masters Abstracts International $g 84-12.
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=30423233 $z click for full text (PQDT)