Simulation of boiling two-phase flow in a helical coil steam generator using the spectral element code NEK-2P

D. R. Shaver; A. Tomboulides; A. Tentner; P. Vegendla; E. Merzari; N. Salpeter; W. D. Pointer

Simulation of boiling two-phase flow in a helical coil steam generator using the spectral element code NEK-2P

D. R. Shaver, A. Tomboulides, A. Tentner, P. Vegendla, E. Merzari, N. Salpeter, W. D. Pointer

Nuclear Energy and Fuel Cycle Division

Research output: Contribution to conference › Paper › peer-review

Abstract

The boiling flow inside a helical coil steam generator is simulated with the two-fluid model in Nek-2P. Nek-2P is the multiphase branch of the spectral element code Nek5000. Details of the implementation of the two-fluid model and the included closure models are discussed. The presented closure models include interactions for momentum, heat, and mass transfer between phases. The model is fully consistent in the limits of both phasic volume fractions approaching zero and is able to simulate flows of dispersed vapor, continuous liquid, dispersed liquid, continuous vapor or any combination thereof. Results from the simulation of the helical coil indicate strong phasic separation driven by the effects of buoyancy and inertia. Significant differences were observed in the results compared to simulations performed using Star-CCM+, although these differences were somewhat expected.

Original language	English
Pages	263-276
Number of pages	14
State	Published - 2018
Event	International Topical Meeting on Advances in Thermal Hydraulics 2018, ATH 2018 - Held in conjunction with the 2018 American Nuclear Society (ANS) Winter Meeting - Orlando, United States Duration: Nov 11 2018 → Nov 15 2018

Conference

Conference	International Topical Meeting on Advances in Thermal Hydraulics 2018, ATH 2018 - Held in conjunction with the 2018 American Nuclear Society (ANS) Winter Meeting
Country/Territory	United States
City	Orlando
Period	11/11/18 → 11/15/18

Funding

This work was funded by the U.S. Department of Energy’s Nuclear Energy Advanced Modeling and Simulation (NEAMS) program. The material was based upon work supported by the U.S. Department of Energy, Office of Science, under contract DE-AC02-06CH11357.

Funders	Funder number
U.S. Department of Energy
Office of Science	DE-AC02-06CH11357

Keywords

CMFD
Helical coil steam generator
Spectral elements

Cite this

Shaver, D. R., Tomboulides, A., Tentner, A., Vegendla, P., Merzari, E., Salpeter, N., & Pointer, W. D. (2018). Simulation of boiling two-phase flow in a helical coil steam generator using the spectral element code NEK-2P. 263-276. Paper presented at International Topical Meeting on Advances in Thermal Hydraulics 2018, ATH 2018 - Held in conjunction with the 2018 American Nuclear Society (ANS) Winter Meeting, Orlando, United States.

Shaver, D. R. ; Tomboulides, A. ; Tentner, A. et al. / Simulation of boiling two-phase flow in a helical coil steam generator using the spectral element code NEK-2P. Paper presented at International Topical Meeting on Advances in Thermal Hydraulics 2018, ATH 2018 - Held in conjunction with the 2018 American Nuclear Society (ANS) Winter Meeting, Orlando, United States.14 p.

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title = "Simulation of boiling two-phase flow in a helical coil steam generator using the spectral element code NEK-2P",

abstract = "The boiling flow inside a helical coil steam generator is simulated with the two-fluid model in Nek-2P. Nek-2P is the multiphase branch of the spectral element code Nek5000. Details of the implementation of the two-fluid model and the included closure models are discussed. The presented closure models include interactions for momentum, heat, and mass transfer between phases. The model is fully consistent in the limits of both phasic volume fractions approaching zero and is able to simulate flows of dispersed vapor, continuous liquid, dispersed liquid, continuous vapor or any combination thereof. Results from the simulation of the helical coil indicate strong phasic separation driven by the effects of buoyancy and inertia. Significant differences were observed in the results compared to simulations performed using Star-CCM+, although these differences were somewhat expected.",

keywords = "CMFD, Helical coil steam generator, Spectral elements",

author = "Shaver, {D. R.} and A. Tomboulides and A. Tentner and P. Vegendla and E. Merzari and N. Salpeter and Pointer, {W. D.}",

note = "Publisher Copyright: {\textcopyright} 2018 International Topical Meeting on Advances in Thermal Hydraulics, ATH 2018 - Embedded Topical Meeting. All rights reserved.; International Topical Meeting on Advances in Thermal Hydraulics 2018, ATH 2018 - Held in conjunction with the 2018 American Nuclear Society (ANS) Winter Meeting ; Conference date: 11-11-2018 Through 15-11-2018",

year = "2018",

language = "English",

pages = "263--276",

}

Shaver, DR, Tomboulides, A, Tentner, A, Vegendla, P, Merzari, E, Salpeter, N & Pointer, WD 2018, 'Simulation of boiling two-phase flow in a helical coil steam generator using the spectral element code NEK-2P', Paper presented at International Topical Meeting on Advances in Thermal Hydraulics 2018, ATH 2018 - Held in conjunction with the 2018 American Nuclear Society (ANS) Winter Meeting, Orlando, United States, 11/11/18 - 11/15/18 pp. 263-276.

Simulation of boiling two-phase flow in a helical coil steam generator using the spectral element code NEK-2P. / Shaver, D. R.; Tomboulides, A.; Tentner, A. et al.
2018. 263-276 Paper presented at International Topical Meeting on Advances in Thermal Hydraulics 2018, ATH 2018 - Held in conjunction with the 2018 American Nuclear Society (ANS) Winter Meeting, Orlando, United States.

Research output: Contribution to conference › Paper › peer-review

TY - CONF

T1 - Simulation of boiling two-phase flow in a helical coil steam generator using the spectral element code NEK-2P

AU - Shaver, D. R.

AU - Tomboulides, A.

AU - Tentner, A.

AU - Vegendla, P.

AU - Merzari, E.

AU - Salpeter, N.

AU - Pointer, W. D.

PY - 2018

Y1 - 2018

N2 - The boiling flow inside a helical coil steam generator is simulated with the two-fluid model in Nek-2P. Nek-2P is the multiphase branch of the spectral element code Nek5000. Details of the implementation of the two-fluid model and the included closure models are discussed. The presented closure models include interactions for momentum, heat, and mass transfer between phases. The model is fully consistent in the limits of both phasic volume fractions approaching zero and is able to simulate flows of dispersed vapor, continuous liquid, dispersed liquid, continuous vapor or any combination thereof. Results from the simulation of the helical coil indicate strong phasic separation driven by the effects of buoyancy and inertia. Significant differences were observed in the results compared to simulations performed using Star-CCM+, although these differences were somewhat expected.

AB - The boiling flow inside a helical coil steam generator is simulated with the two-fluid model in Nek-2P. Nek-2P is the multiphase branch of the spectral element code Nek5000. Details of the implementation of the two-fluid model and the included closure models are discussed. The presented closure models include interactions for momentum, heat, and mass transfer between phases. The model is fully consistent in the limits of both phasic volume fractions approaching zero and is able to simulate flows of dispersed vapor, continuous liquid, dispersed liquid, continuous vapor or any combination thereof. Results from the simulation of the helical coil indicate strong phasic separation driven by the effects of buoyancy and inertia. Significant differences were observed in the results compared to simulations performed using Star-CCM+, although these differences were somewhat expected.

KW - CMFD

KW - Helical coil steam generator

KW - Spectral elements

UR - http://www.scopus.com/inward/record.url?scp=85060184198&partnerID=8YFLogxK

M3 - Paper

AN - SCOPUS:85060184198

SP - 263

EP - 276

T2 - International Topical Meeting on Advances in Thermal Hydraulics 2018, ATH 2018 - Held in conjunction with the 2018 American Nuclear Society (ANS) Winter Meeting

Y2 - 11 November 2018 through 15 November 2018

ER -

Shaver DR, Tomboulides A, Tentner A, Vegendla P, Merzari E, Salpeter N et al.. Simulation of boiling two-phase flow in a helical coil steam generator using the spectral element code NEK-2P. 2018. Paper presented at International Topical Meeting on Advances in Thermal Hydraulics 2018, ATH 2018 - Held in conjunction with the 2018 American Nuclear Society (ANS) Winter Meeting, Orlando, United States.

Simulation of boiling two-phase flow in a helical coil steam generator using the spectral element code NEK-2P

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Keywords

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