Bubble Departure Diameter Prediction Uncertainty
This paper presents quality assessment of a mechanistic modelling for bubble departure diameter prediction during pool boiling condition. In contrast to flow boiling process only buoyancy force with opposing surface tension force was considered as the responsible mechanisms for bubble departure. Ind...
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| Format: | Article |
| Language: | English |
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Wiley
2012-01-01
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| Series: | Science and Technology of Nuclear Installations |
| Online Access: | http://dx.doi.org/10.1155/2012/863190 |
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| _version_ | 1832567208243363840 |
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| author | Marko Matkovič Boštjan Končar |
| author_facet | Marko Matkovič Boštjan Končar |
| author_sort | Marko Matkovič |
| collection | DOAJ |
| description | This paper presents quality assessment of a mechanistic modelling for bubble departure diameter prediction during pool boiling condition. In contrast to flow boiling process only buoyancy force with opposing surface tension force was considered as the responsible mechanisms for bubble departure. Indeed, inertia from the fluid flow around the bubble and the growth force, which describes momentum change due to the evaporation at the bubble base and condensation at the top of the bubble, were all neglected. Besides, shear lift force and quasi-steady drag force as the dominant inertia driven forces were also neglected in the assessment. Rather than trying to model bubble dynamics as precise as possible by properly addressing all the relevant mechanisms available, the work focuses on prediction accuracy of such approach. It has been shown that inlet boundary conditions with realistic experimental accuracy may lead to a significant uncertainty in the prediction of bubble departure diameter, which is intrinsically connected to the uncertainty of most heat partitioning and CHF models. |
| format | Article |
| id | doaj-art-f3af62bf152e4f40a50f847a012e1563 |
| institution | Kabale University |
| issn | 1687-6075 1687-6083 |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Science and Technology of Nuclear Installations |
| spelling | doaj-art-f3af62bf152e4f40a50f847a012e15632025-02-03T01:02:10ZengWileyScience and Technology of Nuclear Installations1687-60751687-60832012-01-01201210.1155/2012/863190863190Bubble Departure Diameter Prediction UncertaintyMarko Matkovič0Boštjan Končar1Jozef Stefan Institute, Jamova 39, 1000 Ljubljana, SloveniaJozef Stefan Institute, Jamova 39, 1000 Ljubljana, SloveniaThis paper presents quality assessment of a mechanistic modelling for bubble departure diameter prediction during pool boiling condition. In contrast to flow boiling process only buoyancy force with opposing surface tension force was considered as the responsible mechanisms for bubble departure. Indeed, inertia from the fluid flow around the bubble and the growth force, which describes momentum change due to the evaporation at the bubble base and condensation at the top of the bubble, were all neglected. Besides, shear lift force and quasi-steady drag force as the dominant inertia driven forces were also neglected in the assessment. Rather than trying to model bubble dynamics as precise as possible by properly addressing all the relevant mechanisms available, the work focuses on prediction accuracy of such approach. It has been shown that inlet boundary conditions with realistic experimental accuracy may lead to a significant uncertainty in the prediction of bubble departure diameter, which is intrinsically connected to the uncertainty of most heat partitioning and CHF models.http://dx.doi.org/10.1155/2012/863190 |
| spellingShingle | Marko Matkovič Boštjan Končar Bubble Departure Diameter Prediction Uncertainty Science and Technology of Nuclear Installations |
| title | Bubble Departure Diameter Prediction Uncertainty |
| title_full | Bubble Departure Diameter Prediction Uncertainty |
| title_fullStr | Bubble Departure Diameter Prediction Uncertainty |
| title_full_unstemmed | Bubble Departure Diameter Prediction Uncertainty |
| title_short | Bubble Departure Diameter Prediction Uncertainty |
| title_sort | bubble departure diameter prediction uncertainty |
| url | http://dx.doi.org/10.1155/2012/863190 |
| work_keys_str_mv | AT markomatkovic bubbledeparturediameterpredictionuncertainty AT bostjankoncar bubbledeparturediameterpredictionuncertainty |