HEAT TRANSFER MODELLING OF TWO-PHASE FLOW IN ISOLATED CHANNEL
This paper deals with Post-CHF (critical heat flux) heat transfer with the focus on different regimes of film boiling. The new thermal-hydraulic code TUBE 2.0 is presented. This code uses the equation of energy conservation and predefined correlations to establish wall temperature, the departure of...
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| Format: | Article |
| Language: | English |
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Czech Technical University in Prague
2018-05-01
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| Series: | Acta Polytechnica CTU Proceedings |
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| Online Access: | https://ojs.cvut.cz/ojs/index.php/APP/article/view/4847 |
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| author | Daniel Vlček Vojtěch Caha Martin Ševeček |
| author_facet | Daniel Vlček Vojtěch Caha Martin Ševeček |
| author_sort | Daniel Vlček |
| collection | DOAJ |
| description | This paper deals with Post-CHF (critical heat flux) heat transfer with the focus on different regimes of film boiling. The new thermal-hydraulic code TUBE 2.0 is presented. This code uses the equation of energy conservation and predefined correlations to establish wall temperature, the departure of nucleate boiling ratio as well as other parameters of cooling in a simple geometry - an isolated channel. With experimental data of inverted annular film boiling from Stewart, the best-performing correlation for calculation of post-CHF heat transfer in the channel was determined. Finally, the new presented code TUBE 2.0 and subchannel code SUBCAL owned by Chemcomex a.s. are compared using results of various experiments conducted by Becker. Data from Stewart could not be used because of inability to predict the onset of boiling crisis with several correlations. |
| format | Article |
| id | doaj-art-ff6dd7909a934666b260c53369e4e799 |
| institution | Kabale University |
| issn | 2336-5382 |
| language | English |
| publishDate | 2018-05-01 |
| publisher | Czech Technical University in Prague |
| record_format | Article |
| series | Acta Polytechnica CTU Proceedings |
| spelling | doaj-art-ff6dd7909a934666b260c53369e4e7992025-08-20T03:42:10ZengCzech Technical University in PragueActa Polytechnica CTU Proceedings2336-53822018-05-01140495510.14311/APP.2018.14.00424115HEAT TRANSFER MODELLING OF TWO-PHASE FLOW IN ISOLATED CHANNELDaniel Vlček0Vojtěch Caha1Martin Ševeček2KJR FJFI CVUT, V Holešovickách 2, Praha 8, Czech RepublicKJR FJFI CVUT, V Holešovickách 2, Praha 8, Czech RepublicKJR FJFI CVUT, V Holešovickách 2, Praha 8, Czech RepublicThis paper deals with Post-CHF (critical heat flux) heat transfer with the focus on different regimes of film boiling. The new thermal-hydraulic code TUBE 2.0 is presented. This code uses the equation of energy conservation and predefined correlations to establish wall temperature, the departure of nucleate boiling ratio as well as other parameters of cooling in a simple geometry - an isolated channel. With experimental data of inverted annular film boiling from Stewart, the best-performing correlation for calculation of post-CHF heat transfer in the channel was determined. Finally, the new presented code TUBE 2.0 and subchannel code SUBCAL owned by Chemcomex a.s. are compared using results of various experiments conducted by Becker. Data from Stewart could not be used because of inability to predict the onset of boiling crisis with several correlations.https://ojs.cvut.cz/ojs/index.php/APP/article/view/4847Post-CHFHeat transferModelling and SimulationTwo-phase FlowCorrelationsExperimental data |
| spellingShingle | Daniel Vlček Vojtěch Caha Martin Ševeček HEAT TRANSFER MODELLING OF TWO-PHASE FLOW IN ISOLATED CHANNEL Acta Polytechnica CTU Proceedings Post-CHF Heat transfer Modelling and Simulation Two-phase Flow Correlations Experimental data |
| title | HEAT TRANSFER MODELLING OF TWO-PHASE FLOW IN ISOLATED CHANNEL |
| title_full | HEAT TRANSFER MODELLING OF TWO-PHASE FLOW IN ISOLATED CHANNEL |
| title_fullStr | HEAT TRANSFER MODELLING OF TWO-PHASE FLOW IN ISOLATED CHANNEL |
| title_full_unstemmed | HEAT TRANSFER MODELLING OF TWO-PHASE FLOW IN ISOLATED CHANNEL |
| title_short | HEAT TRANSFER MODELLING OF TWO-PHASE FLOW IN ISOLATED CHANNEL |
| title_sort | heat transfer modelling of two phase flow in isolated channel |
| topic | Post-CHF Heat transfer Modelling and Simulation Two-phase Flow Correlations Experimental data |
| url | https://ojs.cvut.cz/ojs/index.php/APP/article/view/4847 |
| work_keys_str_mv | AT danielvlcek heattransfermodellingoftwophaseflowinisolatedchannel AT vojtechcaha heattransfermodellingoftwophaseflowinisolatedchannel AT martinsevecek heattransfermodellingoftwophaseflowinisolatedchannel |