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Ismo Karppinen

  • Phone+358405938649
1991 …2019

Research output per year

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Research Output

2019

Critical flow prediction by system codes - Recent analyses made within the FONESYS network

Lanfredini, M., Bestion, D., D'Auria, F., Aksan, N., Fillion, P., Gaillard, P., Heo, J., Karppinen, I., Kim, K. D., Kurki, J., Lifang, L., Shen, A., Vacher, J. L. & Wang, D., 1 Jan 2019, 18th International Topical Meeting on Nuclear Reactor Thermal Hydraulics, NURETH 20192019. American Nuclear Society ANS, p. 2274-2287 14 p.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

2017

Comprehensive and systematic validation of independent safety analysis tools (COVA)

Hillberg, S., Karppinen, I., Silde, A., Kolehmainen, J., Dorval, E., Leskinen, J., Kurki, J., Alku, T., Lauerma, S., Skripnikov, D. & Hovi, T., 2017, SAFIR2018 - The Finnish Research Programme on Nuclear Power Plant Safety 2015-2018: Interim Report. VTT Technical Research Centre of Finland, p. 215-222 (VTT Technology, Vol. 294).

Research output: Chapter in Book/Report/Conference proceedingChapter or book articleProfessional

Open Access

Development and validation of CFD methods for nuclear reactor safety assessment (NURESA)

Pättikangas, T., Ala-Juusela, J., Hovi, V., Huhtanen, R., Karppinen, I., Leskinen, J., Patel, G., Peltola, J., Rämä, T., Siikonen, T., Tanskanen, V. & Toppila, T., 2017, SAFIR2018 - The Finnish Research Programme on Nuclear Power Plant Safety 2015-2018: Interim Report. VTT Technical Research Centre of Finland, p. 253-265 (VTT Technology, Vol. 294).

Research output: Chapter in Book/Report/Conference proceedingChapter or book articleProfessional

Open Access

Integrated transient simulation of a BFB boiler with CFD models for the BFB furnace and dynamic system models for the steam cycle and boiler operation

Hovi, V., Huttunen, M., Karppinen, I., Pättikangas, T., Niemistö, H., Karvonen, L., Kallio, S., Tuuri, S. & Ylä-Outinen, V., 1 Jan 2017, In : Energy Procedia. 120, August, p. 508-515 8 p.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
2 Citations (Scopus)
2013

Benchmark exercise on SBLOCA experiment of PWR PACTEL facility

Kouhia, V., Riikonen, V., Kauppinen, O-P., Purhonen, H., Austregesilo, H., Bánáti, J., Cherubini, M., D'Auria, F., Inkinen, P., Karppinen, I., Kral, P., Peltokorpi, L., Peltonen, J. & Weber, S., 2013, In : Annals of Nuclear Energy. 59, p. 149-156 7 p.

Research output: Contribution to journalArticleScientificpeer-review

8 Citations (Scopus)

Enhancement of safety evaluation tools (ESA)

Karppinen, I., Hillber, S., Inkinen, P., Lauerma, S., Kurki, J., Kolehmainen, J., Silde, A. & Huhtanen, R., 2013, SAFIR2014: The Finnish Research Programme on Nuclear Power Plant Safety 2011-2014: Interim Report. Espoo: VTT Technical Research Centre of Finland, p. 142-155 (VTT Technology; No. 80).

Research output: Chapter in Book/Report/Conference proceedingChapter or book articleProfessional

Uncertainty evaluation for best estimate analyses (UBEA / BEPUE)

Kurki, J., Alku, T. & Karppinen, I., 2013, SAFIR2014: The Finnish Research Programme on Nuclear Power Plant Safety 2011-2014: Interim Report. Espoo: VTT Technical Research Centre of Finland, p. 212-218 (VTT Technology; No. 80).

Research output: Chapter in Book/Report/Conference proceedingChapter or book articleProfessional

2011

Improved Thermal Hydraulic Analysis of Nuclear Reactor and Containment (THARE): THARE summary report

Karppinen, I., Hillberg, S., Inkinen, P., Lauerma, S., Luukka, J., Kurki, J., Silde, A. & Huhtanen, R., 2011, SAFIR2010: The Finnish Research Programme on Safety 2007-2010: Final Report. Espoo: VTT Technical Research Centre of Finland, p. 204-215 (VTT Tiedotteita - Research Notes; No. 2571).

Research output: Chapter in Book/Report/Conference proceedingChapter or book articleProfessional

Open Access
2010

Fluid-structure interaction analysis of large-break loss of coolant accident

Brandt, T., Lestinen, V., Toppila, T., Kähkönen, J., Timperi, A., Pättikangas, T. & Karppinen, I., 2010, In : Nuclear Engineering and Design. 240, 9, p. 2365-2374 10 p.

Research output: Contribution to journalArticleScientificpeer-review

11 Citations (Scopus)

Fluid-structure interaction analysis of large-break loss of coolant accident

Lestinen, V., Kähkönen, J., Toppila, T., Brandt, T., Timperi, A., Pättikangas, T. & Karppinen, I., 2010, In : Nuclear Engineering and Design. 240, 9, p. 2365-2374

Research output: Contribution to journalArticle in a proceedings journalScientificpeer-review

Open Access
2009

Improved thermal hydraulic analyses of nuclear reactor and containment (THARE): THARE summary report

Karppinen, I., Hillberg, S., Inkinen, P., Lauerma, S., Kurki, J., Hänninen, M., Huhtanen, R. & Niemi, J., 2009, SAFIR2010: The Finnish Research Programme on Nuclear Power Plant Safety 2007-2010: Interim Report. Espoo: VTT Technical Research Centre of Finland, p. 173-181 (VTT Tiedotteita - Research Notes; No. 2466).

Research output: Chapter in Book/Report/Conference proceedingChapter or book articleProfessional

Open Access

The integration of thermal-hydraulics (CFD) and finite element (FEM) computer codes in liquid and solid mechanics (MULTIPHYSICS): MULTIPHYSICS summary report

Brandt, T., Lestinen, V., Toppila, T., Kähkönen, J., Timperi, A., Pättikangas, T. & Karppinen, I., 2009, SAFIR2010: The Finnish Research Programme on Nuclear Power Plant Safety 2007-2010: Interim Report . Espoo: VTT Technical Research Centre of Finland, p. 249-260 (VTT Tiedotteita - Research Notes; No. 2466).

Research output: Chapter in Book/Report/Conference proceedingChapter or book articleProfessional

Open Access
2008

A benchmark exercise on the use of CFD codes for containment issues using best practice guidelines: A computational challenge

Andreani, M., Haller, K., Heitsch, M., Hemström, B., Karppinen, I., Macek, J., Schmid, J., Paillere, H. & Toth, I., 2008, In : Nuclear Engineering and Design. 238, 3, p. 502-513 12 p.

Research output: Contribution to journalArticleScientificpeer-review

28 Citations (Scopus)

Validation of fluid-structure interaction calculations in a large-break loss of coolant accident

Timperi, A., Pättikangas, T., Karppinen, I., Lestinen, V., Kähkönen, J. & Toppila, T., 2008, Proceedings of the 16th International Conference on Nuclear Engineering, ICONE16 2008. Orlando, Florida: American Society of Mechanical Engineers ASME, p. 245-254

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

7 Citations (Scopus)

Validation of fluid-structure interaction simulation environment in analysis of large-break loss of coolant accident

Brandt, T., Lestinen, V., Toppila, T., Kähkönen, J., Timperi, A., Pättikangas, T. & Karppinen, I., 2008, Proceedings: 2008 Asia Simulation Conference - 7th International Conference on System Simulation and Scientific Computing, ASC-ICSC 2008. IEEE Institute of Electrical and Electronic Engineers , p. 520-527

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

1 Citation (Scopus)
2006

THEA summary report

Karppinen, I., 2006, SAFIR. The Finnish Research Programme on Nuclear Power Plant Safety 2003-2006 : Final Report. Espoo: VTT Technical Research Centre of Finland, p. 156-165 (VTT Tiedotteita - Research Notes; No. 2363).

Research output: Chapter in Book/Report/Conference proceedingChapter or book articleProfessional

Open Access
2005

Evaluation of computational fluid dynamic methods for reactor safety analysis (ECORA)

Scheuerer, M., Heitsch, M., Menter, F., Egorov, Y., Toth, I., Bestion, D., Pigny, S., Paillere, H., Martin, A., Boucker, M., Krepper, E., Willemsen, S., Muhlbauer, P., Andreani, M., Smith, B., Karlsson, R., Henriksson, M., Hemstrom, B., Karppinen, I. & Kimber, G., 2005, In : Nuclear Engineering and Design. 235, 2-4, p. 359 - 368 10 p.

Research output: Contribution to journalArticleScientificpeer-review

47 Citations (Scopus)

Severe accident analysis with the APROS SA code

Csige, A., Aszodi, A., Karppinen, I. & Adorjan, F., 2005, Proceedings of the 15th Symposium of AER: Znojmo, Czech Republic, 3-7 October 2005. p. 419-428

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

2001

CFD simulations of thermal stratification in piping system dead legs

Pättikangas, T., Manninen, M., Karppinen, I. & Puustinen, M., 2001, Espoo: VTT Technical Research Centre of Finland. 50 p. (VTT Energy Reports; No. 23/2001).

Research output: Book/ReportReport

2000

TOKE special report: Modelling of PACTEL with APROS5 simulation environment

Leppänen, A-P., Karppinen, I. & Puska, E. K., 2000, FINNUS: The Finnish Research Programme on Nuclear Power Plant Safety: Interim Report 1999 - August 2000. Espoo: VTT Technical Research Centre of Finland, p. 168-178 (VTT Tiedotteita - Research Notes; No. 2057).

Research output: Chapter in Book/Report/Conference proceedingChapter or book articleProfessional

Open Access
1999

Evaluation of two-fluid and drift flux thermohydraulics in APROS code environment

Miettinen, J., Karppinen, I., Hänninen, M. & Ylijoki, J., 1999, Proceedings of the 2nd CSNI Specialist Meeting on Simulators and Plant Analysers. Espoo: VTT Technical Research Centre of Finland, p. 378-389 (VTT Symposium; No. 194).

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

1995

Modelling studies of horizontal steam generator PGV-1000 with CATHARE

Karppinen, I., 1995, Proceedings of 3rd International Seminar on Horizontal Steam Generators. p. 273-290

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

1991

Modelling of horizontal steam generator with RELAP5/MOD2 and MOD3

Karppinen, I., 1991, Tieteellisiä julkaisuja. p. 182-194 (Acta Universitatis Lappeenrantaensis, Vol. 2).

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