Analysis of critical heat flux under vertical subcooled flow boiling condition (Development and evaluation for prediction method of DNB heat flux under non-uniform axial heat flux condition)
From the viewpoint of safety design of nuclear reactor and economic terms, for PWR, it is important to clear the mechanism of DNB and predict accurately the critical heat flux under vertical subcooled flow boiling condition. So, in this research, a prediction model of the CHF under vertical subcoole...
| Main Authors: | , |
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| Format: | Article |
| Language: | Japanese |
| Published: |
The Japan Society of Mechanical Engineers
2014-06-01
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| Series: | Nihon Kikai Gakkai ronbunshu |
| Subjects: | |
| Online Access: | https://www.jstage.jst.go.jp/article/transjsme/80/814/80_2014tep0157/_pdf/-char/en |
| _version_ | 1811224915616989184 |
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| author | Mitsuru YAMADA Shinichi MOROOKA |
| author_facet | Mitsuru YAMADA Shinichi MOROOKA |
| author_sort | Mitsuru YAMADA |
| collection | DOAJ |
| description | From the viewpoint of safety design of nuclear reactor and economic terms, for PWR, it is important to clear the mechanism of DNB and predict accurately the critical heat flux under vertical subcooled flow boiling condition. So, in this research, a prediction model of the CHF under vertical subcooled flow boiling condition was developed. The model is based on the vapor blanket mechanism and the homogeneous nucleation mechanism. Additionally, the model accounts for a new phenomenon called in this research as overheating phenomenon of the heated surface. The method was evaluated by comparing the prediction results with experimental data for a vertical circular tube under high pressure, subcooled flow boiling and non-uniform axial heat flux condition. It was found from the evaluation results that the method developed in this research was able to predict accurately both of the CHF and the CHF location. |
| first_indexed | 2024-04-12T08:56:53Z |
| format | Article |
| id | doaj.art-36a81f0b60c347dea7df2e944f7edb4f |
| institution | Directory Open Access Journal |
| issn | 2187-9761 |
| language | Japanese |
| last_indexed | 2024-04-12T08:56:53Z |
| publishDate | 2014-06-01 |
| publisher | The Japan Society of Mechanical Engineers |
| record_format | Article |
| series | Nihon Kikai Gakkai ronbunshu |
| spelling | doaj.art-36a81f0b60c347dea7df2e944f7edb4f2022-12-22T03:39:21ZjpnThe Japan Society of Mechanical EngineersNihon Kikai Gakkai ronbunshu2187-97612014-06-0180814TEP0157TEP015710.1299/transjsme.2014tep0157transjsmeAnalysis of critical heat flux under vertical subcooled flow boiling condition (Development and evaluation for prediction method of DNB heat flux under non-uniform axial heat flux condition)Mitsuru YAMADA0Shinichi MOROOKA1Waseda UniversityWaseda UniversityFrom the viewpoint of safety design of nuclear reactor and economic terms, for PWR, it is important to clear the mechanism of DNB and predict accurately the critical heat flux under vertical subcooled flow boiling condition. So, in this research, a prediction model of the CHF under vertical subcooled flow boiling condition was developed. The model is based on the vapor blanket mechanism and the homogeneous nucleation mechanism. Additionally, the model accounts for a new phenomenon called in this research as overheating phenomenon of the heated surface. The method was evaluated by comparing the prediction results with experimental data for a vertical circular tube under high pressure, subcooled flow boiling and non-uniform axial heat flux condition. It was found from the evaluation results that the method developed in this research was able to predict accurately both of the CHF and the CHF location.https://www.jstage.jst.go.jp/article/transjsme/80/814/80_2014tep0157/_pdf/-char/enchfsubcooled flow boilingnon-uniform axial heat fluxpwrdnb |
| spellingShingle | Mitsuru YAMADA Shinichi MOROOKA Analysis of critical heat flux under vertical subcooled flow boiling condition (Development and evaluation for prediction method of DNB heat flux under non-uniform axial heat flux condition) Nihon Kikai Gakkai ronbunshu chf subcooled flow boiling non-uniform axial heat flux pwr dnb |
| title | Analysis of critical heat flux under vertical subcooled flow boiling condition (Development and evaluation for prediction method of DNB heat flux under non-uniform axial heat flux condition) |
| title_full | Analysis of critical heat flux under vertical subcooled flow boiling condition (Development and evaluation for prediction method of DNB heat flux under non-uniform axial heat flux condition) |
| title_fullStr | Analysis of critical heat flux under vertical subcooled flow boiling condition (Development and evaluation for prediction method of DNB heat flux under non-uniform axial heat flux condition) |
| title_full_unstemmed | Analysis of critical heat flux under vertical subcooled flow boiling condition (Development and evaluation for prediction method of DNB heat flux under non-uniform axial heat flux condition) |
| title_short | Analysis of critical heat flux under vertical subcooled flow boiling condition (Development and evaluation for prediction method of DNB heat flux under non-uniform axial heat flux condition) |
| title_sort | analysis of critical heat flux under vertical subcooled flow boiling condition development and evaluation for prediction method of dnb heat flux under non uniform axial heat flux condition |
| topic | chf subcooled flow boiling non-uniform axial heat flux pwr dnb |
| url | https://www.jstage.jst.go.jp/article/transjsme/80/814/80_2014tep0157/_pdf/-char/en |
| work_keys_str_mv | AT mitsuruyamada analysisofcriticalheatfluxunderverticalsubcooledflowboilingconditiondevelopmentandevaluationforpredictionmethodofdnbheatfluxundernonuniformaxialheatfluxcondition AT shinichimorooka analysisofcriticalheatfluxunderverticalsubcooledflowboilingconditiondevelopmentandevaluationforpredictionmethodofdnbheatfluxundernonuniformaxialheatfluxcondition |