Fuel savings for a general cargo ship employing retractable bow foils
Route simulations were performed on a 100 m long (between perpendiculars) general cargo ship equipped with retractable bow-mounted foils, so-called wavefoils, for resistance reduction and motion damping in waves. Two round-trip routes were simulated: Orkney Islands to Iceland and across the Bay of B...
Published in: | Applied Ocean Research |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Elsevier
2018
|
Subjects: | |
Online Access: | http://hdl.handle.net/11250/2495380 https://doi.org/10.1016/j.apor.2018.03.015 |
id |
ftntnutrondheimi:oai:ntnuopen.ntnu.no:11250/2495380 |
---|---|
record_format |
openpolar |
spelling |
ftntnutrondheimi:oai:ntnuopen.ntnu.no:11250/2495380 2023-05-15T16:48:12+02:00 Fuel savings for a general cargo ship employing retractable bow foils Bøckmann, Eirik Yrke, Audun Steen, Sverre 2018 http://hdl.handle.net/11250/2495380 https://doi.org/10.1016/j.apor.2018.03.015 eng eng Elsevier https://www.sciencedirect.com/science/article/pii/S0141118717304091 Norges forskningsråd: 216432 Applied Ocean Research. 2018, 76 . urn:issn:0141-1187 http://hdl.handle.net/11250/2495380 https://doi.org/10.1016/j.apor.2018.03.015 cristin:1580840 10 76 Applied Ocean Research Journal article 2018 ftntnutrondheimi https://doi.org/10.1016/j.apor.2018.03.015 2019-09-17T06:53:51Z Route simulations were performed on a 100 m long (between perpendiculars) general cargo ship equipped with retractable bow-mounted foils, so-called wavefoils, for resistance reduction and motion damping in waves. Two round-trip routes were simulated: Orkney Islands to Iceland and across the Bay of Biscay. Ship motions and added resistance in waves were calculated in the frequency domain. Foil thrust was calculated in the time domain, based on a frequency-domain model of the vessel motions with wavefoils, using a slightly modified version of the Leishman–Beddoes dynamic stall model [22]. For both directions of each route, 1000 journeys with and without wavefoils were simulated, with wind and wave conditions obtained from ECMWF hindcast data. In the simulations, two identical ships, one equipped with wavefoils and the other without, were assumed operating in parallel, starting their journeys at random times between January 1, 2000, and December 1, 2014. The brake power was constant for the ship without wavefoils, whereas the ship with wavefoils reduced its power to obtain the same speed as the ship without wavefoils. For the most favorable route with respect to this study, Orkney Islands to Iceland, the average fuel saving was 22% for a constant brake power without foils that corresponds to a calm-water speed of 14 knots. submittedVersion This is a submitted manuscript of an article published by Elsevier Ltd in Applied Ocean Research, 21 April 2018 Article in Journal/Newspaper Iceland NTNU Open Archive (Norwegian University of Science and Technology) Applied Ocean Research 76 1 10 |
institution |
Open Polar |
collection |
NTNU Open Archive (Norwegian University of Science and Technology) |
op_collection_id |
ftntnutrondheimi |
language |
English |
description |
Route simulations were performed on a 100 m long (between perpendiculars) general cargo ship equipped with retractable bow-mounted foils, so-called wavefoils, for resistance reduction and motion damping in waves. Two round-trip routes were simulated: Orkney Islands to Iceland and across the Bay of Biscay. Ship motions and added resistance in waves were calculated in the frequency domain. Foil thrust was calculated in the time domain, based on a frequency-domain model of the vessel motions with wavefoils, using a slightly modified version of the Leishman–Beddoes dynamic stall model [22]. For both directions of each route, 1000 journeys with and without wavefoils were simulated, with wind and wave conditions obtained from ECMWF hindcast data. In the simulations, two identical ships, one equipped with wavefoils and the other without, were assumed operating in parallel, starting their journeys at random times between January 1, 2000, and December 1, 2014. The brake power was constant for the ship without wavefoils, whereas the ship with wavefoils reduced its power to obtain the same speed as the ship without wavefoils. For the most favorable route with respect to this study, Orkney Islands to Iceland, the average fuel saving was 22% for a constant brake power without foils that corresponds to a calm-water speed of 14 knots. submittedVersion This is a submitted manuscript of an article published by Elsevier Ltd in Applied Ocean Research, 21 April 2018 |
format |
Article in Journal/Newspaper |
author |
Bøckmann, Eirik Yrke, Audun Steen, Sverre |
spellingShingle |
Bøckmann, Eirik Yrke, Audun Steen, Sverre Fuel savings for a general cargo ship employing retractable bow foils |
author_facet |
Bøckmann, Eirik Yrke, Audun Steen, Sverre |
author_sort |
Bøckmann, Eirik |
title |
Fuel savings for a general cargo ship employing retractable bow foils |
title_short |
Fuel savings for a general cargo ship employing retractable bow foils |
title_full |
Fuel savings for a general cargo ship employing retractable bow foils |
title_fullStr |
Fuel savings for a general cargo ship employing retractable bow foils |
title_full_unstemmed |
Fuel savings for a general cargo ship employing retractable bow foils |
title_sort |
fuel savings for a general cargo ship employing retractable bow foils |
publisher |
Elsevier |
publishDate |
2018 |
url |
http://hdl.handle.net/11250/2495380 https://doi.org/10.1016/j.apor.2018.03.015 |
genre |
Iceland |
genre_facet |
Iceland |
op_source |
10 76 Applied Ocean Research |
op_relation |
https://www.sciencedirect.com/science/article/pii/S0141118717304091 Norges forskningsråd: 216432 Applied Ocean Research. 2018, 76 . urn:issn:0141-1187 http://hdl.handle.net/11250/2495380 https://doi.org/10.1016/j.apor.2018.03.015 cristin:1580840 |
op_doi |
https://doi.org/10.1016/j.apor.2018.03.015 |
container_title |
Applied Ocean Research |
container_volume |
76 |
container_start_page |
1 |
op_container_end_page |
10 |
_version_ |
1766038313852993536 |