3-D Thermal-Electric Finite Element Model of a Nb3 Sn Coil During a Quench

Troitino, Jose Ferradas; Ambrosio, Giorgio; Bajas, Hugo; Bordini, Bernardo; Ferracin, Paolo; Fleiter, Jerome; Bermudez, Susana Izquierdo; Gomez, Jose Vicente Lorenzo; Perez, Juan Carlos; Vallone, Giorgio; Senatore, Carmine

doi:10.1109/TASC.2019.2897234

Title: 3-D Thermal-Electric Finite Element Model of a Nb₃ Sn Coil During a Quench

Abstract

High field superconducting magnets for particle accelerators often exhibit premature quenches. Once a normal zone is generated within the conductor, the quench may propagate causing temperature and resistive voltage rise along the coil. The resulting thermal gradients can potentially cause new peak stresses that might exceed the tolerable limits, degrading the conductor. The computation of the strain state in the coils during quench then becomes of paramount importance for magnet design, and requires a complete three-dimensional (3-D) analysis of quench phenomena. The objective of this paper is to present the first multiphysics modeling activities towards a new full 3-D methodology for the analysis of magnet mechanics during quench. As a first step, a 3-D thermal-electric finite element model of a Nb₃Sn superconducting coil is developed and explained here. The model uses direct coupled-field elements to solve the system of thermal and electrical equations. A solving algorithm has also been implemented in order to investigate the physics behind quench transients. The output from this model, built in ANSYS APDL, can be easily coupled in a later stage to a mechanical model in order to estimate the strain state in the coil windings. In conclusion, a very good agreement has been observedmore »« less

Authors:

^[1];

^[2];

^[3]; Bordini, Bernardo ^[3];

^[3];

^[4]; Perez, Juan Carlos ^[3];

^[5];

^[1]

Univ. of Geneva (Switzerland)
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
European Organization for Nuclear Research (CERN), Geneva (Switzerland)
Barcelona Supercomputing Center (BSC-CNS) (Spain)
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)

Publication Date:: Mon Feb 04 00:00:00 EST 2019

Research Org.:: Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)

Sponsoring Org.:: USDOE Office of Science (SC), High Energy Physics (HEP)

OSTI Identifier:: 1618066

Report Number(s):: FERMILAB-PUB-19-403-TD
Journal ID: ISSN 1051-8223; oai:inspirehep.net:1744549; TRN: US2106788

Grant/Contract Number:: AC02-07CH11359

Resource Type:: Accepted Manuscript

Journal Name:: IEEE Transactions on Applied Superconductivity

Additional Journal Information:: Journal Volume: 29; Journal Issue: 5; Journal ID: ISSN 1051-8223

Publisher:: Institute of Electrical and Electronics Engineers (IEEE)

Country of Publication:: United States

Language:: English

Subject:: 43 PARTICLE ACCELERATORS; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; Quench; finite element model; thermal-electric; superconducting coil

Citation Formats


                    Troitino, Jose Ferradas, Ambrosio, Giorgio, Bajas, Hugo, Bordini, Bernardo, Ferracin, Paolo, Fleiter, Jerome, Bermudez, Susana Izquierdo, Gomez, Jose Vicente Lorenzo, Perez, Juan Carlos, Vallone, Giorgio, and Senatore, Carmine. 3-D Thermal-Electric Finite Element Model of a Nb3 Sn Coil During a Quench.  United States: N. p., 2019. 
Web.  doi:10.1109/TASC.2019.2897234.

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                    Troitino, Jose Ferradas, Ambrosio, Giorgio, Bajas, Hugo, Bordini, Bernardo, Ferracin, Paolo, Fleiter, Jerome, Bermudez, Susana Izquierdo, Gomez, Jose Vicente Lorenzo, Perez, Juan Carlos, Vallone, Giorgio, & Senatore, Carmine. 3-D Thermal-Electric Finite Element Model of a Nb3 Sn Coil During a Quench.  United States.  https://doi.org/10.1109/TASC.2019.2897234

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                    Troitino, Jose Ferradas, Ambrosio, Giorgio, Bajas, Hugo, Bordini, Bernardo, Ferracin, Paolo, Fleiter, Jerome, Bermudez, Susana Izquierdo, Gomez, Jose Vicente Lorenzo, Perez, Juan Carlos, Vallone, Giorgio, and Senatore, Carmine. Mon .  
"3-D Thermal-Electric Finite Element Model of a Nb3 Sn Coil During a Quench".  United States.  https://doi.org/10.1109/TASC.2019.2897234.  https://www.osti.gov/servlets/purl/1618066.

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@article{osti_1618066,

  title        = {3-D Thermal-Electric Finite Element Model of a Nb3 Sn Coil During a Quench},

  author       = {Troitino, Jose Ferradas and Ambrosio, Giorgio and Bajas, Hugo and Bordini, Bernardo and Ferracin, Paolo and Fleiter, Jerome and Bermudez, Susana Izquierdo and Gomez, Jose Vicente Lorenzo and Perez, Juan Carlos and Vallone, Giorgio and Senatore, Carmine},

  abstractNote = {High field superconducting magnets for particle accelerators often exhibit premature quenches. Once a normal zone is generated within the conductor, the quench may propagate causing temperature and resistive voltage rise along the coil. The resulting thermal gradients can potentially cause new peak stresses that might exceed the tolerable limits, degrading the conductor. The computation of the strain state in the coils during quench then becomes of paramount importance for magnet design, and requires a complete three-dimensional (3-D) analysis of quench phenomena. The objective of this paper is to present the first multiphysics modeling activities towards a new full 3-D methodology for the analysis of magnet mechanics during quench. As a first step, a 3-D thermal-electric finite element model of a Nb3Sn superconducting coil is developed and explained here. The model uses direct coupled-field elements to solve the system of thermal and electrical equations. A solving algorithm has also been implemented in order to investigate the physics behind quench transients. The output from this model, built in ANSYS APDL, can be easily coupled in a later stage to a mechanical model in order to estimate the strain state in the coil windings. In conclusion, a very good agreement has been observed between the numerical results and experimental tests performed in individual superconducting cables and real superconducting magnets.},

  doi          = {10.1109/TASC.2019.2897234},

  journal      = {IEEE Transactions on Applied Superconductivity},

  number       = 5,

  volume       = 29,

  place        = {United States},

  year         = {Mon Feb 04 00:00:00 EST 2019},

  month        = {Mon Feb 04 00:00:00 EST 2019}

}

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Works referencing / citing this record:

User defined elements in ANSYS for 2D multiphysics modeling of superconducting magnets
journal, August 2019

Brouwer, Lucas; Arbelaez, Diego; Auchmann, Bernhard
Superconductor Science and Technology, Vol. 32, Issue 9
DOI: 10.1088/1361-6668/ab2e63

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Title: 3-D Thermal-Electric Finite Element Model of a Nb3 Sn Coil During a Quench

Abstract

Citation Formats

User defined elements in ANSYS for 2D multiphysics modeling of superconducting magnets journal, August 2019

Title: 3-D Thermal-Electric Finite Element Model of a Nb₃ Sn Coil During a Quench

User defined elements in ANSYS for 2D multiphysics modeling of superconducting magnets
journal, August 2019