A Lagrangian Two-Phase Model for Assessing the Near-Field Impacts of CO2 Ocean Sequestration

Baixin Chen; Masahiro Nishio; Yongchen Song; Makato Akai

doi:10.1115/OMAE2006-92225

A Lagrangian Two-Phase Model for Assessing the Near-Field Impacts of CO2 Ocean Sequestration

Baixin Chen^*, Masahiro Nishio, Yongchen Song, Makato Akai

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

A new version of a two-phase numerical model is developed to simulate CO₂ droplet dissolution and the plume dynamics of CO₂ enriched seawater produced by direct release of liquid CO₂ into deep ocean from a towed pipe. This Lagrangian framework model consists of three sub-models. They are the CO₂ droplet moving and dissolving sub-model, the turbulent dispersion of CO₂ enriched seawater sub-model, and the biological impact sub-model. We performed simulations of direct injection of liquid CO₂ from a release platform towed by a moving-ship into mid-depth seawater to examine the roles of injection parameters, including release platform type and initial CO₂ droplet size. Results from the simulations show that a horizontal release platform can create a plume with less physical and biological impacts than a plume created by a vertical release platform. With an injection rate of 100kg/s, simulations predict that injection of small droplets (5mm in diameter) would produce up to 1.5 times the pH. reduction of larger droplets (15 mm in diameter). This large pH. reduction may significantly affect ambient Zooplankton.

Original language	English
Title of host publication	25th International Conference on Offshore Mechanics and Arctic Engineering
Publisher	American Society of Mechanical Engineers
Pages	425-431
Number of pages	7
ISBN (Electronic)	0791837777
ISBN (Print)	0791847497
DOIs	https://doi.org/10.1115/OMAE2006-92225
Publication status	Published - 2006
Event	25th International Conference on Offshore Mechanics and Arctic Engineering 2006 - Hamburg, Germany Duration: 4 Jun 2006 → 9 Jun 2006

Conference

Conference	25th International Conference on Offshore Mechanics and Arctic Engineering 2006
Abbreviated title	OMAE 2006
Country/Territory	Germany
City	Hamburg
Period	4/06/06 → 9/06/06

Keywords

Biological impacts
CO droplet
Ocean storage
pH change
Two-phase flow

ASJC Scopus subject areas

Energy Engineering and Power Technology
Fluid Flow and Transfer Processes
Ocean Engineering

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10.1115/OMAE2006-92225

Cite this

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title = "A Lagrangian Two-Phase Model for Assessing the Near-Field Impacts of CO2 Ocean Sequestration",

abstract = "A new version of a two-phase numerical model is developed to simulate CO2 droplet dissolution and the plume dynamics of CO2 enriched seawater produced by direct release of liquid CO2 into deep ocean from a towed pipe. This Lagrangian framework model consists of three sub-models. They are the CO2 droplet moving and dissolving sub-model, the turbulent dispersion of CO2 enriched seawater sub-model, and the biological impact sub-model. We performed simulations of direct injection of liquid CO2 from a release platform towed by a moving-ship into mid-depth seawater to examine the roles of injection parameters, including release platform type and initial CO2 droplet size. Results from the simulations show that a horizontal release platform can create a plume with less physical and biological impacts than a plume created by a vertical release platform. With an injection rate of 100kg/s, simulations predict that injection of small droplets (5mm in diameter) would produce up to 1.5 times the pH. reduction of larger droplets (15 mm in diameter). This large pH. reduction may significantly affect ambient Zooplankton.",

keywords = "Biological impacts, CO droplet, Ocean storage, pH change, Two-phase flow",

author = "Baixin Chen and Masahiro Nishio and Yongchen Song and Makato Akai",

year = "2006",

doi = "10.1115/OMAE2006-92225",

language = "English",

isbn = "0791847497",

pages = "425--431",

booktitle = "25th International Conference on Offshore Mechanics and Arctic Engineering",

publisher = "American Society of Mechanical Engineers",

address = "United States",

note = "25th International Conference on Offshore Mechanics and Arctic Engineering 2006, OMAE 2006 ; Conference date: 04-06-2006 Through 09-06-2006",

}

Chen, B, Nishio, M, Song, Y & Akai, M 2006, A Lagrangian Two-Phase Model for Assessing the Near-Field Impacts of CO2 Ocean Sequestration. in 25th International Conference on Offshore Mechanics and Arctic Engineering. American Society of Mechanical Engineers, pp. 425-431, 25th International Conference on Offshore Mechanics and Arctic Engineering 2006, Hamburg, Germany, 4/06/06. https://doi.org/10.1115/OMAE2006-92225

A Lagrangian Two-Phase Model for Assessing the Near-Field Impacts of CO2 Ocean Sequestration. / Chen, Baixin; Nishio, Masahiro; Song, Yongchen et al.
25th International Conference on Offshore Mechanics and Arctic Engineering. American Society of Mechanical Engineers, 2006. p. 425-431.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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T1 - A Lagrangian Two-Phase Model for Assessing the Near-Field Impacts of CO2 Ocean Sequestration

AU - Chen, Baixin

AU - Nishio, Masahiro

AU - Song, Yongchen

AU - Akai, Makato

PY - 2006

Y1 - 2006

N2 - A new version of a two-phase numerical model is developed to simulate CO2 droplet dissolution and the plume dynamics of CO2 enriched seawater produced by direct release of liquid CO2 into deep ocean from a towed pipe. This Lagrangian framework model consists of three sub-models. They are the CO2 droplet moving and dissolving sub-model, the turbulent dispersion of CO2 enriched seawater sub-model, and the biological impact sub-model. We performed simulations of direct injection of liquid CO2 from a release platform towed by a moving-ship into mid-depth seawater to examine the roles of injection parameters, including release platform type and initial CO2 droplet size. Results from the simulations show that a horizontal release platform can create a plume with less physical and biological impacts than a plume created by a vertical release platform. With an injection rate of 100kg/s, simulations predict that injection of small droplets (5mm in diameter) would produce up to 1.5 times the pH. reduction of larger droplets (15 mm in diameter). This large pH. reduction may significantly affect ambient Zooplankton.

AB - A new version of a two-phase numerical model is developed to simulate CO2 droplet dissolution and the plume dynamics of CO2 enriched seawater produced by direct release of liquid CO2 into deep ocean from a towed pipe. This Lagrangian framework model consists of three sub-models. They are the CO2 droplet moving and dissolving sub-model, the turbulent dispersion of CO2 enriched seawater sub-model, and the biological impact sub-model. We performed simulations of direct injection of liquid CO2 from a release platform towed by a moving-ship into mid-depth seawater to examine the roles of injection parameters, including release platform type and initial CO2 droplet size. Results from the simulations show that a horizontal release platform can create a plume with less physical and biological impacts than a plume created by a vertical release platform. With an injection rate of 100kg/s, simulations predict that injection of small droplets (5mm in diameter) would produce up to 1.5 times the pH. reduction of larger droplets (15 mm in diameter). This large pH. reduction may significantly affect ambient Zooplankton.

KW - Biological impacts

KW - CO droplet

KW - Ocean storage

KW - pH change

KW - Two-phase flow

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DO - 10.1115/OMAE2006-92225

M3 - Conference contribution

AN - SCOPUS:33751347290

SN - 0791847497

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EP - 431

BT - 25th International Conference on Offshore Mechanics and Arctic Engineering

PB - American Society of Mechanical Engineers

T2 - 25th International Conference on Offshore Mechanics and Arctic Engineering 2006

Y2 - 4 June 2006 through 9 June 2006

ER -

A Lagrangian Two-Phase Model for Assessing the Near-Field Impacts of CO2 Ocean Sequestration

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Conference

Keywords

ASJC Scopus subject areas

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