Comparison of Coupled and Uncoupled Modeling of Floating Wind Farms with Shared Anchors
As design options for floating wind farms continue to be explored, shared (or multiline) anchors that secure mooring lines from multiple turbines remain a promising technology that can potentially reduce the number of anchors and overall mooring costs. This study evaluates two methods for analyzing...
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| Language: | English |
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MDPI AG
2025-01-01
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| Series: | Journal of Marine Science and Engineering |
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| Online Access: | https://www.mdpi.com/2077-1312/13/1/106 |
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| author | Katherine Coughlan Ericka Lozon Matthew Hall Bruce Martin Sanjay Arwade |
| author_facet | Katherine Coughlan Ericka Lozon Matthew Hall Bruce Martin Sanjay Arwade |
| author_sort | Katherine Coughlan |
| collection | DOAJ |
| description | As design options for floating wind farms continue to be explored, shared (or multiline) anchors that secure mooring lines from multiple turbines remain a promising technology that can potentially reduce the number of anchors and overall mooring costs. This study evaluates two methods for analyzing the loads on shared anchors: one in which floating offshore wind turbines are simulated individually (using the software OpenFAST), and one in which an entire floating wind farm is simulated collectively (using the software FAST.Farm). A three-line shared anchor is evaluated for multiple loading scenarios in deep water, using the International Energy Agency 15 MW turbine on the VolturnUS-S semisubmersible platform. While the two methods produce broadly comparable results, the coupled wave loading on platforms within the farm results in wave force cancellations and amplifications that decrease multiline force directional ranges and increase multiline force extreme values (up to 7%) and standard deviations (up to 11%) for wave-driven load cases. The inclusion of wakes in FAST.Farm also reduces the net load on the shared anchor due to the velocity deficit, leading to larger differences between OpenFAST and FAST.Farm (up to 3% difference in mean loads) for load cases with operational turbines. |
| format | Article |
| id | doaj-art-b14f7ac02b2d4513b9cb90d5b9639ec9 |
| institution | Kabale University |
| issn | 2077-1312 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Marine Science and Engineering |
| spelling | doaj-art-b14f7ac02b2d4513b9cb90d5b9639ec92025-01-24T13:36:53ZengMDPI AGJournal of Marine Science and Engineering2077-13122025-01-0113110610.3390/jmse13010106Comparison of Coupled and Uncoupled Modeling of Floating Wind Farms with Shared AnchorsKatherine Coughlan0Ericka Lozon1Matthew Hall2Bruce Martin3Sanjay Arwade4National Renewable Energy Laboratory, 15013 Denver W Pkwy, Golden, CO 80401, USANational Renewable Energy Laboratory, 15013 Denver W Pkwy, Golden, CO 80401, USANational Renewable Energy Laboratory, 15013 Denver W Pkwy, Golden, CO 80401, USAPrinciple Power Inc., 2200 Powell St., Emeryville, CA 94608, USADepartment of Civil and Environmental Engineering (CEE), College of Engineering, University of Massachusetts Amherst, Marston Hall, 130 Natural Resources Road, Amherst, MA 01003, USAAs design options for floating wind farms continue to be explored, shared (or multiline) anchors that secure mooring lines from multiple turbines remain a promising technology that can potentially reduce the number of anchors and overall mooring costs. This study evaluates two methods for analyzing the loads on shared anchors: one in which floating offshore wind turbines are simulated individually (using the software OpenFAST), and one in which an entire floating wind farm is simulated collectively (using the software FAST.Farm). A three-line shared anchor is evaluated for multiple loading scenarios in deep water, using the International Energy Agency 15 MW turbine on the VolturnUS-S semisubmersible platform. While the two methods produce broadly comparable results, the coupled wave loading on platforms within the farm results in wave force cancellations and amplifications that decrease multiline force directional ranges and increase multiline force extreme values (up to 7%) and standard deviations (up to 11%) for wave-driven load cases. The inclusion of wakes in FAST.Farm also reduces the net load on the shared anchor due to the velocity deficit, leading to larger differences between OpenFAST and FAST.Farm (up to 3% difference in mean loads) for load cases with operational turbines.https://www.mdpi.com/2077-1312/13/1/106shared anchorsfloating offshore windmooring systemswakesmultiline |
| spellingShingle | Katherine Coughlan Ericka Lozon Matthew Hall Bruce Martin Sanjay Arwade Comparison of Coupled and Uncoupled Modeling of Floating Wind Farms with Shared Anchors Journal of Marine Science and Engineering shared anchors floating offshore wind mooring systems wakes multiline |
| title | Comparison of Coupled and Uncoupled Modeling of Floating Wind Farms with Shared Anchors |
| title_full | Comparison of Coupled and Uncoupled Modeling of Floating Wind Farms with Shared Anchors |
| title_fullStr | Comparison of Coupled and Uncoupled Modeling of Floating Wind Farms with Shared Anchors |
| title_full_unstemmed | Comparison of Coupled and Uncoupled Modeling of Floating Wind Farms with Shared Anchors |
| title_short | Comparison of Coupled and Uncoupled Modeling of Floating Wind Farms with Shared Anchors |
| title_sort | comparison of coupled and uncoupled modeling of floating wind farms with shared anchors |
| topic | shared anchors floating offshore wind mooring systems wakes multiline |
| url | https://www.mdpi.com/2077-1312/13/1/106 |
| work_keys_str_mv | AT katherinecoughlan comparisonofcoupledanduncoupledmodelingoffloatingwindfarmswithsharedanchors AT erickalozon comparisonofcoupledanduncoupledmodelingoffloatingwindfarmswithsharedanchors AT matthewhall comparisonofcoupledanduncoupledmodelingoffloatingwindfarmswithsharedanchors AT brucemartin comparisonofcoupledanduncoupledmodelingoffloatingwindfarmswithsharedanchors AT sanjayarwade comparisonofcoupledanduncoupledmodelingoffloatingwindfarmswithsharedanchors |