Comparison and Analysis of the Condensation Benchmark Results

W. Ambrosini, M. Bucci, N. Forgione, F. Oriolo, S. Paci, J-P. Magnaud, E. Studer, E. Reinecke, Stephan Kelm, W. Jahn, J. Travis, H. Wilkening, Matthias Heitsch, I. Kljenak, M. Babic, M. Houkema, Dirk C. Visser, L. Vyskocil, P. Kostka, Risto Huhtanen

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

Abstract

In the frame of the SARnet Network of Excellence, the need was felt for assessing the status of condensation models adopted in CFD codes relevant for nuclear reactor containment applications. The motivation for this work was provided by the increasingly widespread use of CFD in the analysis of containment behavior consequent to postulated severe accidents, in which wall condensation can promote containment atmosphere mixing. Since standard models are seldom available in many CFD codes for dealing with condensation and in consideration of the different strategies envisaged for analyzing downscaled facilities or full scale containments, this aspect was considered worth of a specific attention. In this aim, after performing a review of the models available to the Participants in the network, appropriate Benchmark Problems were proposed to assess and compare their behavior. The University of Pisa took the charge of coordinating these efforts, proposing an initial step of the Benchmark (identified as the 0th Step) aimed at comparing code responses among each other and with applicable correlations in the application to a classical problem of condensation on a flat plate; the reference geometrical and operating conditions for this step were selected as an idealization of those typical in the CONAN experimental facility, operated at the University of Pisa. Then, the 1st Step of the activity involved addressing experimental data from the CONAN facility at different steam mass fractions and velocities and the comparison of the measured condensation rates and of local heat fluxes with code predictions. Both the steps in this activity were fruitful, since they constituted a gradual and relatively systematic approach to the actual experimental conditions, allowing for revising model details and discussing numerical and physical options. Though the comparison with experiments involved up to now only a limited number of data points, the activity is not considered to be completed and additional experimental data will be offered in the future to obtain a broader assessment of codes in conditions of interest for severe accidents in light water reactors.
Original languageEnglish
Title of host publication3rd European Review Meeting on Severe Accident Research (ERMSAR-2008)
Subtitle of host publicationCD-ROM
Publication statusPublished - 2008
MoE publication typeB3 Non-refereed article in conference proceedings
Event3rd European Review Meeting on Severe Accident Research, ERMSAR-2008 - Nesseber, Bulgaria
Duration: 23 Sep 200825 Sep 2008

Conference

Conference3rd European Review Meeting on Severe Accident Research, ERMSAR-2008
Abbreviated titleERMSAR-2008
CountryBulgaria
CityNesseber
Period23/09/0825/09/08

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Condensation
Computational fluid dynamics
Accidents
Light water reactors
Nuclear reactors
Heat flux
Steam
Experiments

Cite this

Ambrosini, W., Bucci, M., Forgione, N., Oriolo, F., Paci, S., Magnaud, J-P., ... Huhtanen, R. (2008). Comparison and Analysis of the Condensation Benchmark Results. In 3rd European Review Meeting on Severe Accident Research (ERMSAR-2008): CD-ROM [3.2]
Ambrosini, W. ; Bucci, M. ; Forgione, N. ; Oriolo, F. ; Paci, S. ; Magnaud, J-P. ; Studer, E. ; Reinecke, E. ; Kelm, Stephan ; Jahn, W. ; Travis, J. ; Wilkening, H. ; Heitsch, Matthias ; Kljenak, I. ; Babic, M. ; Houkema, M. ; Visser, Dirk C. ; Vyskocil, L. ; Kostka, P. ; Huhtanen, Risto. / Comparison and Analysis of the Condensation Benchmark Results. 3rd European Review Meeting on Severe Accident Research (ERMSAR-2008): CD-ROM. 2008.
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title = "Comparison and Analysis of the Condensation Benchmark Results",
abstract = "In the frame of the SARnet Network of Excellence, the need was felt for assessing the status of condensation models adopted in CFD codes relevant for nuclear reactor containment applications. The motivation for this work was provided by the increasingly widespread use of CFD in the analysis of containment behavior consequent to postulated severe accidents, in which wall condensation can promote containment atmosphere mixing. Since standard models are seldom available in many CFD codes for dealing with condensation and in consideration of the different strategies envisaged for analyzing downscaled facilities or full scale containments, this aspect was considered worth of a specific attention. In this aim, after performing a review of the models available to the Participants in the network, appropriate Benchmark Problems were proposed to assess and compare their behavior. The University of Pisa took the charge of coordinating these efforts, proposing an initial step of the Benchmark (identified as the 0th Step) aimed at comparing code responses among each other and with applicable correlations in the application to a classical problem of condensation on a flat plate; the reference geometrical and operating conditions for this step were selected as an idealization of those typical in the CONAN experimental facility, operated at the University of Pisa. Then, the 1st Step of the activity involved addressing experimental data from the CONAN facility at different steam mass fractions and velocities and the comparison of the measured condensation rates and of local heat fluxes with code predictions. Both the steps in this activity were fruitful, since they constituted a gradual and relatively systematic approach to the actual experimental conditions, allowing for revising model details and discussing numerical and physical options. Though the comparison with experiments involved up to now only a limited number of data points, the activity is not considered to be completed and additional experimental data will be offered in the future to obtain a broader assessment of codes in conditions of interest for severe accidents in light water reactors.",
author = "W. Ambrosini and M. Bucci and N. Forgione and F. Oriolo and S. Paci and J-P. Magnaud and E. Studer and E. Reinecke and Stephan Kelm and W. Jahn and J. Travis and H. Wilkening and Matthias Heitsch and I. Kljenak and M. Babic and M. Houkema and Visser, {Dirk C.} and L. Vyskocil and P. Kostka and Risto Huhtanen",
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Ambrosini, W, Bucci, M, Forgione, N, Oriolo, F, Paci, S, Magnaud, J-P, Studer, E, Reinecke, E, Kelm, S, Jahn, W, Travis, J, Wilkening, H, Heitsch, M, Kljenak, I, Babic, M, Houkema, M, Visser, DC, Vyskocil, L, Kostka, P & Huhtanen, R 2008, Comparison and Analysis of the Condensation Benchmark Results. in 3rd European Review Meeting on Severe Accident Research (ERMSAR-2008): CD-ROM., 3.2, 3rd European Review Meeting on Severe Accident Research, ERMSAR-2008, Nesseber, Bulgaria, 23/09/08.

Comparison and Analysis of the Condensation Benchmark Results. / Ambrosini, W.; Bucci, M.; Forgione, N.; Oriolo, F.; Paci, S.; Magnaud, J-P.; Studer, E.; Reinecke, E.; Kelm, Stephan; Jahn, W.; Travis, J.; Wilkening, H.; Heitsch, Matthias; Kljenak, I.; Babic, M.; Houkema, M.; Visser, Dirk C.; Vyskocil, L.; Kostka, P.; Huhtanen, Risto.

3rd European Review Meeting on Severe Accident Research (ERMSAR-2008): CD-ROM. 2008. 3.2.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

TY - GEN

T1 - Comparison and Analysis of the Condensation Benchmark Results

AU - Ambrosini, W.

AU - Bucci, M.

AU - Forgione, N.

AU - Oriolo, F.

AU - Paci, S.

AU - Magnaud, J-P.

AU - Studer, E.

AU - Reinecke, E.

AU - Kelm, Stephan

AU - Jahn, W.

AU - Travis, J.

AU - Wilkening, H.

AU - Heitsch, Matthias

AU - Kljenak, I.

AU - Babic, M.

AU - Houkema, M.

AU - Visser, Dirk C.

AU - Vyskocil, L.

AU - Kostka, P.

AU - Huhtanen, Risto

PY - 2008

Y1 - 2008

N2 - In the frame of the SARnet Network of Excellence, the need was felt for assessing the status of condensation models adopted in CFD codes relevant for nuclear reactor containment applications. The motivation for this work was provided by the increasingly widespread use of CFD in the analysis of containment behavior consequent to postulated severe accidents, in which wall condensation can promote containment atmosphere mixing. Since standard models are seldom available in many CFD codes for dealing with condensation and in consideration of the different strategies envisaged for analyzing downscaled facilities or full scale containments, this aspect was considered worth of a specific attention. In this aim, after performing a review of the models available to the Participants in the network, appropriate Benchmark Problems were proposed to assess and compare their behavior. The University of Pisa took the charge of coordinating these efforts, proposing an initial step of the Benchmark (identified as the 0th Step) aimed at comparing code responses among each other and with applicable correlations in the application to a classical problem of condensation on a flat plate; the reference geometrical and operating conditions for this step were selected as an idealization of those typical in the CONAN experimental facility, operated at the University of Pisa. Then, the 1st Step of the activity involved addressing experimental data from the CONAN facility at different steam mass fractions and velocities and the comparison of the measured condensation rates and of local heat fluxes with code predictions. Both the steps in this activity were fruitful, since they constituted a gradual and relatively systematic approach to the actual experimental conditions, allowing for revising model details and discussing numerical and physical options. Though the comparison with experiments involved up to now only a limited number of data points, the activity is not considered to be completed and additional experimental data will be offered in the future to obtain a broader assessment of codes in conditions of interest for severe accidents in light water reactors.

AB - In the frame of the SARnet Network of Excellence, the need was felt for assessing the status of condensation models adopted in CFD codes relevant for nuclear reactor containment applications. The motivation for this work was provided by the increasingly widespread use of CFD in the analysis of containment behavior consequent to postulated severe accidents, in which wall condensation can promote containment atmosphere mixing. Since standard models are seldom available in many CFD codes for dealing with condensation and in consideration of the different strategies envisaged for analyzing downscaled facilities or full scale containments, this aspect was considered worth of a specific attention. In this aim, after performing a review of the models available to the Participants in the network, appropriate Benchmark Problems were proposed to assess and compare their behavior. The University of Pisa took the charge of coordinating these efforts, proposing an initial step of the Benchmark (identified as the 0th Step) aimed at comparing code responses among each other and with applicable correlations in the application to a classical problem of condensation on a flat plate; the reference geometrical and operating conditions for this step were selected as an idealization of those typical in the CONAN experimental facility, operated at the University of Pisa. Then, the 1st Step of the activity involved addressing experimental data from the CONAN facility at different steam mass fractions and velocities and the comparison of the measured condensation rates and of local heat fluxes with code predictions. Both the steps in this activity were fruitful, since they constituted a gradual and relatively systematic approach to the actual experimental conditions, allowing for revising model details and discussing numerical and physical options. Though the comparison with experiments involved up to now only a limited number of data points, the activity is not considered to be completed and additional experimental data will be offered in the future to obtain a broader assessment of codes in conditions of interest for severe accidents in light water reactors.

M3 - Conference article in proceedings

BT - 3rd European Review Meeting on Severe Accident Research (ERMSAR-2008)

ER -

Ambrosini W, Bucci M, Forgione N, Oriolo F, Paci S, Magnaud J-P et al. Comparison and Analysis of the Condensation Benchmark Results. In 3rd European Review Meeting on Severe Accident Research (ERMSAR-2008): CD-ROM. 2008. 3.2