Modelling structural performance of offshore wind turbine support structures in ice-infested waters by using design load portal

Research output: Chapter in Book/Report/Conference proceedingConference abstract in proceedingsScientific

Abstract

The Gulf of Bothnia has the potential for large capacity wind farms because of relatively high and constant wind velocities. The mostly shallow coastal areas enable cost-efficient foundation and grid connection. However, the sea freezes annually, introducing the most significant uncertainties in the support structure design for offshore wind turbines. Drifting ice introduces major design load case for offshore wind turbines. The magnitude and time variation of the sea ice load depends on various factors like the thickness and velocity of the ice as well as the size and shape of the structure. Dynamic coupling between the ice and structural deformations at water line needs to be considered to model ice actions.
This presentation introduces an ice load portal that simplifies and speeds up the preliminary design process for offshore wind farms. The design portal integrates all necessary information (site-specific environmental data, structural design, and environmental loads) into a single tool. This study demonstrates the functionality of the ice load design portal with case studies. Two various coupled ice-structure interaction models: the Määttänen-Blenkarn model and the Sodhi model were applied. The model validation was made by case studies of two various sites including comparisons to commercial FEM software (Abaqus). As each simulation takes only few minutes to run, the portal can be used iteratively with low computational costs. If the solution does not fit the design requirements, the user can straightforwardly change the site and/or the structure and run the analyses again. This procedure can easily be repeated as many times as necessary.
As the design portal integrate all necessary information (site-specific environmental data, structural design and environmental loads) into a single tool, it shortens the preliminary design process for offshore wind farms.
Original languageEnglish
Title of host publicationBook of abstracts of the Tenth International Conference on Engineering Computational Technology, ECT2018
Publication statusPublished - 2018
MoE publication typeNot Eligible
Event13th International Conference on Computational Structures Technology, CST 2018 - Sitges, Barcelona, Spain
Duration: 4 Sep 20186 Sep 2018
http://www.ectconference.com/

Conference

Conference13th International Conference on Computational Structures Technology, CST 2018
Abbreviated titleCST2018
CountrySpain
CitySitges, Barcelona
Period4/09/186/09/18
Internet address

Fingerprint

Offshore wind turbines
Ice
Water
Offshore wind farms
Structural design
Water piping systems
Sea ice
Costs
Finite element method

Keywords

  • Design portal
  • ice load
  • ice-structure interaction
  • Offshore wind turbine

Cite this

Heinonen, J., Klinge, P., Kolari, K., & Kurkela, J. T. (2018). Modelling structural performance of offshore wind turbine support structures in ice-infested waters by using design load portal. In Book of abstracts of the Tenth International Conference on Engineering Computational Technology, ECT2018
Heinonen, Jaakko ; Klinge, Paul ; Kolari, Kari ; Kurkela, Juha T. / Modelling structural performance of offshore wind turbine support structures in ice-infested waters by using design load portal. Book of abstracts of the Tenth International Conference on Engineering Computational Technology, ECT2018. 2018.
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abstract = "The Gulf of Bothnia has the potential for large capacity wind farms because of relatively high and constant wind velocities. The mostly shallow coastal areas enable cost-efficient foundation and grid connection. However, the sea freezes annually, introducing the most significant uncertainties in the support structure design for offshore wind turbines. Drifting ice introduces major design load case for offshore wind turbines. The magnitude and time variation of the sea ice load depends on various factors like the thickness and velocity of the ice as well as the size and shape of the structure. Dynamic coupling between the ice and structural deformations at water line needs to be considered to model ice actions. This presentation introduces an ice load portal that simplifies and speeds up the preliminary design process for offshore wind farms. The design portal integrates all necessary information (site-specific environmental data, structural design, and environmental loads) into a single tool. This study demonstrates the functionality of the ice load design portal with case studies. Two various coupled ice-structure interaction models: the M{\"a}{\"a}tt{\"a}nen-Blenkarn model and the Sodhi model were applied. The model validation was made by case studies of two various sites including comparisons to commercial FEM software (Abaqus). As each simulation takes only few minutes to run, the portal can be used iteratively with low computational costs. If the solution does not fit the design requirements, the user can straightforwardly change the site and/or the structure and run the analyses again. This procedure can easily be repeated as many times as necessary.As the design portal integrate all necessary information (site-specific environmental data, structural design and environmental loads) into a single tool, it shortens the preliminary design process for offshore wind farms.",
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Heinonen, J, Klinge, P, Kolari, K & Kurkela, JT 2018, Modelling structural performance of offshore wind turbine support structures in ice-infested waters by using design load portal. in Book of abstracts of the Tenth International Conference on Engineering Computational Technology, ECT2018. 13th International Conference on Computational Structures Technology, CST 2018, Sitges, Barcelona, Spain, 4/09/18.

Modelling structural performance of offshore wind turbine support structures in ice-infested waters by using design load portal. / Heinonen, Jaakko; Klinge, Paul; Kolari, Kari; Kurkela, Juha T.

Book of abstracts of the Tenth International Conference on Engineering Computational Technology, ECT2018. 2018.

Research output: Chapter in Book/Report/Conference proceedingConference abstract in proceedingsScientific

TY - CHAP

T1 - Modelling structural performance of offshore wind turbine support structures in ice-infested waters by using design load portal

AU - Heinonen, Jaakko

AU - Klinge, Paul

AU - Kolari, Kari

AU - Kurkela, Juha T.

N1 - Available only for participants

PY - 2018

Y1 - 2018

N2 - The Gulf of Bothnia has the potential for large capacity wind farms because of relatively high and constant wind velocities. The mostly shallow coastal areas enable cost-efficient foundation and grid connection. However, the sea freezes annually, introducing the most significant uncertainties in the support structure design for offshore wind turbines. Drifting ice introduces major design load case for offshore wind turbines. The magnitude and time variation of the sea ice load depends on various factors like the thickness and velocity of the ice as well as the size and shape of the structure. Dynamic coupling between the ice and structural deformations at water line needs to be considered to model ice actions. This presentation introduces an ice load portal that simplifies and speeds up the preliminary design process for offshore wind farms. The design portal integrates all necessary information (site-specific environmental data, structural design, and environmental loads) into a single tool. This study demonstrates the functionality of the ice load design portal with case studies. Two various coupled ice-structure interaction models: the Määttänen-Blenkarn model and the Sodhi model were applied. The model validation was made by case studies of two various sites including comparisons to commercial FEM software (Abaqus). As each simulation takes only few minutes to run, the portal can be used iteratively with low computational costs. If the solution does not fit the design requirements, the user can straightforwardly change the site and/or the structure and run the analyses again. This procedure can easily be repeated as many times as necessary.As the design portal integrate all necessary information (site-specific environmental data, structural design and environmental loads) into a single tool, it shortens the preliminary design process for offshore wind farms.

AB - The Gulf of Bothnia has the potential for large capacity wind farms because of relatively high and constant wind velocities. The mostly shallow coastal areas enable cost-efficient foundation and grid connection. However, the sea freezes annually, introducing the most significant uncertainties in the support structure design for offshore wind turbines. Drifting ice introduces major design load case for offshore wind turbines. The magnitude and time variation of the sea ice load depends on various factors like the thickness and velocity of the ice as well as the size and shape of the structure. Dynamic coupling between the ice and structural deformations at water line needs to be considered to model ice actions. This presentation introduces an ice load portal that simplifies and speeds up the preliminary design process for offshore wind farms. The design portal integrates all necessary information (site-specific environmental data, structural design, and environmental loads) into a single tool. This study demonstrates the functionality of the ice load design portal with case studies. Two various coupled ice-structure interaction models: the Määttänen-Blenkarn model and the Sodhi model were applied. The model validation was made by case studies of two various sites including comparisons to commercial FEM software (Abaqus). As each simulation takes only few minutes to run, the portal can be used iteratively with low computational costs. If the solution does not fit the design requirements, the user can straightforwardly change the site and/or the structure and run the analyses again. This procedure can easily be repeated as many times as necessary.As the design portal integrate all necessary information (site-specific environmental data, structural design and environmental loads) into a single tool, it shortens the preliminary design process for offshore wind farms.

KW - Design portal

KW - ice load

KW - ice-structure interaction

KW - Offshore wind turbine

M3 - Conference abstract in proceedings

BT - Book of abstracts of the Tenth International Conference on Engineering Computational Technology, ECT2018

ER -

Heinonen J, Klinge P, Kolari K, Kurkela JT. Modelling structural performance of offshore wind turbine support structures in ice-infested waters by using design load portal. In Book of abstracts of the Tenth International Conference on Engineering Computational Technology, ECT2018. 2018