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, Elia Merzari, N. Salpeter, W. D. Pointer

Research output: Contribution to conferencePaper

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 languageEnglish (US)
Pages263-276
Number of pages14
StatePublished - Jan 1 2018
EventInternational 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 2018Nov 15 2018

Other

OtherInternational Topical Meeting on Advances in Thermal Hydraulics 2018, ATH 2018 - Held in conjunction with the 2018 American Nuclear Society (ANS) Winter Meeting
CountryUnited States
CityOrlando
Period11/11/1811/15/18

Fingerprint

boilers
two phase flow
Steam generators
Two phase flow
boiling
Boiling liquids
two fluid models
coils
closures
vapors
simulation
liquids
buoyancy
inertia
mass transfer
momentum transfer
Vapors
heat transfer
liquid
Fluids

All Science Journal Classification (ASJC) codes

  • Geotechnical Engineering and Engineering Geology
  • Nuclear Energy and Engineering
  • Nuclear and High Energy Physics

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. ; Vegendla, P. ; Merzari, Elia ; Salpeter, N. ; Pointer, W. D. / 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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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.; Vegendla, P.; Merzari, Elia; Salpeter, N.; Pointer, W. D.

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 conferencePaper

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, Elia

AU - Salpeter, N.

AU - Pointer, W. D.

PY - 2018/1/1

Y1 - 2018/1/1

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.

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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.