Symmetry of Structures under Two-Dimensional Instability in a Finite-Height Horizontal Layer of Boiling Liquid
The two-dimensional instability of a horizontal layer of boiling liquid with a finite height was experimentally studied. In this layer, “vapor columns” rose at the corners of a square rectangular grid, and the symmetry of “vapor column” location on the heating surface was considered. The model adopt...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-09-01
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| Series: | Symmetry |
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| Online Access: | https://www.mdpi.com/2073-8994/15/9/1792 |
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| author | Vladimir I. Zhukov Aleksandr N. Pavlenko |
| author_facet | Vladimir I. Zhukov Aleksandr N. Pavlenko |
| author_sort | Vladimir I. Zhukov |
| collection | DOAJ |
| description | The two-dimensional instability of a horizontal layer of boiling liquid with a finite height was experimentally studied. In this layer, “vapor columns” rose at the corners of a square rectangular grid, and the symmetry of “vapor column” location on the heating surface was considered. The model adopts an approach to the boiling crisis from the side of both developed nucleate boiling and transitional boiling (the Zuber problem). When dealing with developed nucleate boiling, the layer of boiling liquid is considered in calculations as an isotropic homogeneous system (foam). It is shown how the conditions on the heating surface (capillary-porous coating) affect the external hydrodynamics of the liquid layer and, ultimately, the value of the critical heat flux. The calculation ratio obtained by approaching the boiling crisis from the side of developed nucleate boiling takes into account the dependence of the critical heat flux on the void fraction of the boiling liquid layer. A new solution to the boiling crisis problem is proposed when approaching the crisis from the side of transitional boiling (the Zuber problem). This new solution eliminates some shortcomings of the classical problem (in particular, the void fraction of the layer corresponds to the experiments). |
| first_indexed | 2024-03-10T21:54:52Z |
| format | Article |
| id | doaj.art-ca928a19af014c9cb6a409096fa9c224 |
| institution | Directory Open Access Journal |
| issn | 2073-8994 |
| language | English |
| last_indexed | 2024-03-10T21:54:52Z |
| publishDate | 2023-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Symmetry |
| spelling | doaj.art-ca928a19af014c9cb6a409096fa9c2242023-11-19T13:12:44ZengMDPI AGSymmetry2073-89942023-09-01159179210.3390/sym15091792Symmetry of Structures under Two-Dimensional Instability in a Finite-Height Horizontal Layer of Boiling LiquidVladimir I. Zhukov0Aleksandr N. Pavlenko1Kutateladze Institute of Thermophysics SB RAS, 630090 Novosibirsk, RussiaKutateladze Institute of Thermophysics SB RAS, 630090 Novosibirsk, RussiaThe two-dimensional instability of a horizontal layer of boiling liquid with a finite height was experimentally studied. In this layer, “vapor columns” rose at the corners of a square rectangular grid, and the symmetry of “vapor column” location on the heating surface was considered. The model adopts an approach to the boiling crisis from the side of both developed nucleate boiling and transitional boiling (the Zuber problem). When dealing with developed nucleate boiling, the layer of boiling liquid is considered in calculations as an isotropic homogeneous system (foam). It is shown how the conditions on the heating surface (capillary-porous coating) affect the external hydrodynamics of the liquid layer and, ultimately, the value of the critical heat flux. The calculation ratio obtained by approaching the boiling crisis from the side of developed nucleate boiling takes into account the dependence of the critical heat flux on the void fraction of the boiling liquid layer. A new solution to the boiling crisis problem is proposed when approaching the crisis from the side of transitional boiling (the Zuber problem). This new solution eliminates some shortcomings of the classical problem (in particular, the void fraction of the layer corresponds to the experiments).https://www.mdpi.com/2073-8994/15/9/1792horizontal liquid layerboilingcritical heat fluxinstabilitiescapillary-porous coatingvoid fraction |
| spellingShingle | Vladimir I. Zhukov Aleksandr N. Pavlenko Symmetry of Structures under Two-Dimensional Instability in a Finite-Height Horizontal Layer of Boiling Liquid Symmetry horizontal liquid layer boiling critical heat flux instabilities capillary-porous coating void fraction |
| title | Symmetry of Structures under Two-Dimensional Instability in a Finite-Height Horizontal Layer of Boiling Liquid |
| title_full | Symmetry of Structures under Two-Dimensional Instability in a Finite-Height Horizontal Layer of Boiling Liquid |
| title_fullStr | Symmetry of Structures under Two-Dimensional Instability in a Finite-Height Horizontal Layer of Boiling Liquid |
| title_full_unstemmed | Symmetry of Structures under Two-Dimensional Instability in a Finite-Height Horizontal Layer of Boiling Liquid |
| title_short | Symmetry of Structures under Two-Dimensional Instability in a Finite-Height Horizontal Layer of Boiling Liquid |
| title_sort | symmetry of structures under two dimensional instability in a finite height horizontal layer of boiling liquid |
| topic | horizontal liquid layer boiling critical heat flux instabilities capillary-porous coating void fraction |
| url | https://www.mdpi.com/2073-8994/15/9/1792 |
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