Analyses of Current And Wave Forces on Velocity Caps

Erik Damgaard Christensen, Jeppe Buhrkall, Mark C. D. Eskesen, Bjarne Jensen

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Abstract

Velocity caps are often used in connection with for instance offshore intake sea water for the use of for cooling water for power plants or as a source for desalinization plants. The intakes can also be used for river intakes. The velocity cap is placed on top of a vertical pipe. The vertical pipe leads the water into another pipe or tunnel system. A pressure gradient generated by the water level difference between the sea and basin drives the flow through the tunnel system. The tunnel system is often in the order of a couple kilometers long. Based on CFD analyses (computational fluid dynamics) this paper investigates the current and wave forces on the velocity cap and the vertical cylinder. The Morison’s force model was used in the analyses of the extracted force time series in from the CFD model. Further the distribution of the inlet velocities around the velocity cap was also analyzed in detail in the wave case.
Original languageEnglish
Title of host publicationProceedings of the ASME 34th International Conference on Ocean, Offshore and Arctic Engineering
Number of pages10
Publication date2015
Article numberOMAE2015-41907
Publication statusPublished - 2015
EventASME 2015 34th International Conference on Ocean, Offshore and Arctic Engineering - St John’s, Newfoundland, Canada
Duration: 31 May 20155 Jun 2015
Conference number: 34

Conference

ConferenceASME 2015 34th International Conference on Ocean, Offshore and Arctic Engineering
Number34
CountryCanada
CitySt John’s, Newfoundland
Period31/05/201505/06/2015

Cite this

Christensen, E. D., Buhrkall, J., Eskesen, M. C. D., & Jensen, B. (2015). Analyses of Current And Wave Forces on Velocity Caps. In Proceedings of the ASME 34th International Conference on Ocean, Offshore and Arctic Engineering [OMAE2015-41907]
Christensen, Erik Damgaard ; Buhrkall, Jeppe ; Eskesen, Mark C. D. ; Jensen, Bjarne. / Analyses of Current And Wave Forces on Velocity Caps. Proceedings of the ASME 34th International Conference on Ocean, Offshore and Arctic Engineering. 2015.
@inproceedings{3847a60674b44e2e9582675b09c10c24,
title = "Analyses of Current And Wave Forces on Velocity Caps",
abstract = "Velocity caps are often used in connection with for instance offshore intake sea water for the use of for cooling water for power plants or as a source for desalinization plants. The intakes can also be used for river intakes. The velocity cap is placed on top of a vertical pipe. The vertical pipe leads the water into another pipe or tunnel system. A pressure gradient generated by the water level difference between the sea and basin drives the flow through the tunnel system. The tunnel system is often in the order of a couple kilometers long. Based on CFD analyses (computational fluid dynamics) this paper investigates the current and wave forces on the velocity cap and the vertical cylinder. The Morison’s force model was used in the analyses of the extracted force time series in from the CFD model. Further the distribution of the inlet velocities around the velocity cap was also analyzed in detail in the wave case.",
author = "Christensen, {Erik Damgaard} and Jeppe Buhrkall and Eskesen, {Mark C. D.} and Bjarne Jensen",
year = "2015",
language = "English",
booktitle = "Proceedings of the ASME 34th International Conference on Ocean, Offshore and Arctic Engineering",

}

Christensen, ED, Buhrkall, J, Eskesen, MCD & Jensen, B 2015, Analyses of Current And Wave Forces on Velocity Caps. in Proceedings of the ASME 34th International Conference on Ocean, Offshore and Arctic Engineering., OMAE2015-41907, ASME 2015 34th International Conference on Ocean, Offshore and Arctic Engineering, St John’s, Newfoundland, Canada, 31/05/2015.

Analyses of Current And Wave Forces on Velocity Caps. / Christensen, Erik Damgaard; Buhrkall, Jeppe; Eskesen, Mark C. D.; Jensen, Bjarne.

Proceedings of the ASME 34th International Conference on Ocean, Offshore and Arctic Engineering. 2015. OMAE2015-41907.

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

TY - GEN

T1 - Analyses of Current And Wave Forces on Velocity Caps

AU - Christensen, Erik Damgaard

AU - Buhrkall, Jeppe

AU - Eskesen, Mark C. D.

AU - Jensen, Bjarne

PY - 2015

Y1 - 2015

N2 - Velocity caps are often used in connection with for instance offshore intake sea water for the use of for cooling water for power plants or as a source for desalinization plants. The intakes can also be used for river intakes. The velocity cap is placed on top of a vertical pipe. The vertical pipe leads the water into another pipe or tunnel system. A pressure gradient generated by the water level difference between the sea and basin drives the flow through the tunnel system. The tunnel system is often in the order of a couple kilometers long. Based on CFD analyses (computational fluid dynamics) this paper investigates the current and wave forces on the velocity cap and the vertical cylinder. The Morison’s force model was used in the analyses of the extracted force time series in from the CFD model. Further the distribution of the inlet velocities around the velocity cap was also analyzed in detail in the wave case.

AB - Velocity caps are often used in connection with for instance offshore intake sea water for the use of for cooling water for power plants or as a source for desalinization plants. The intakes can also be used for river intakes. The velocity cap is placed on top of a vertical pipe. The vertical pipe leads the water into another pipe or tunnel system. A pressure gradient generated by the water level difference between the sea and basin drives the flow through the tunnel system. The tunnel system is often in the order of a couple kilometers long. Based on CFD analyses (computational fluid dynamics) this paper investigates the current and wave forces on the velocity cap and the vertical cylinder. The Morison’s force model was used in the analyses of the extracted force time series in from the CFD model. Further the distribution of the inlet velocities around the velocity cap was also analyzed in detail in the wave case.

M3 - Article in proceedings

BT - Proceedings of the ASME 34th International Conference on Ocean, Offshore and Arctic Engineering

ER -

Christensen ED, Buhrkall J, Eskesen MCD, Jensen B. Analyses of Current And Wave Forces on Velocity Caps. In Proceedings of the ASME 34th International Conference on Ocean, Offshore and Arctic Engineering. 2015. OMAE2015-41907