Heat Transfer Prediction for Internal Flow Condensation in Inclined Tubes
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| Publicado en: | Fluids vol. 10, no. 12 (2025), p. 326-361 |
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| Autor principal: | |
| Otros Autores: | , , , , , |
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MDPI AG
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| Acceso en línea: | Citation/Abstract Full Text + Graphics Full Text - PDF |
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| 001 | 3286281102 | ||
| 003 | UK-CbPIL | ||
| 022 | |a 2311-5521 | ||
| 024 | 7 | |a 10.3390/fluids10120326 |2 doi | |
| 035 | |a 3286281102 | ||
| 045 | 2 | |b d20250101 |b d20251231 | |
| 100 | 1 | |a Corrêa, Mateus Henrique |u Laboratory of Thermal Engineering and Fluid Systems (LETeF), Department of Mechanical Engineering, São Carlos School of Engineering (EESC), University of São Paulo (USP), Av. Trabalhador São-Carlense, 400, São Carlos 13566-590, SP, Brazil | |
| 245 | 1 | |a Heat Transfer Prediction for Internal Flow Condensation in Inclined Tubes | |
| 260 | |b MDPI AG |c 2025 | ||
| 513 | |a Journal Article | ||
| 520 | 3 | |a This study investigates the heat transfer coefficient (HTC) during flow condensation inside smooth inclined tubes, analyzing the combined effects of flow orientation, fluid properties and flow characteristics on the thermal performance. The literature review indicates that the channel inclination effect on the HTC remains insufficiently understood, highlighting the need for further investigation. Thus, a comprehensive experimental database comprising 4944 data points was compiled from 24 studies, including all flow directions, from upward, to horizontal, downward, and intermediate orientations. The study reveals that the influence of flow inclination on the HTC can be ruled by a criterion based on the liquid film thickness Froude number, <inline-formula>Frδ</inline-formula>. At <inline-formula>Frδ</inline-formula> > 4.75, the effect of flow inclination becomes negligible, while under <inline-formula>Frδ</inline-formula> < 4.75, the inclination can have a considerable effect on the HTC. The experimental data show that at low Froude numbers, upward flow typically exhibits higher HTC compared to downward flow, attributed to enhanced interfacial turbulence caused by opposing gravitational and shear forces. In contrast, under vertical downward flow, the annular pattern is more prominent, with reduced interfacial disturbances, limiting HTC performance. The compiled experimental database for inclined channels was compared against an update list of prediction methods, including seven correlations incorporating the inclination angle as an input parameter. Additionally, a new simple correction factor including the effect of inclined tubes was proposed based on the flow inclination angle and on the liquid film thickness Froude number. The proposed correction factor improved the prediction of well-ranked correlations in the literature by over 20% for stratified flow pattern conditions and by more than 5% for low Froude number values. These findings present new insights into how tube inclination can affect heat transfer in a two-phase flow. | |
| 653 | |a Flow distribution | ||
| 653 | |a Flow characteristics | ||
| 653 | |a Fluid flow | ||
| 653 | |a Inclination angle | ||
| 653 | |a Horizontal orientation | ||
| 653 | |a Two phase flow | ||
| 653 | |a Tubes | ||
| 653 | |a Stratified flow | ||
| 653 | |a Data points | ||
| 653 | |a Literature reviews | ||
| 653 | |a Heat transfer | ||
| 653 | |a Flow pattern | ||
| 653 | |a Velocity | ||
| 653 | |a Shear forces | ||
| 653 | |a Condensers | ||
| 653 | |a Temperature | ||
| 653 | |a Heat transfer coefficients | ||
| 653 | |a Film thickness | ||
| 653 | |a Databases | ||
| 653 | |a Internal flow | ||
| 653 | |a Froude number | ||
| 653 | |a Multiphase flow | ||
| 653 | |a Nuclear power plants | ||
| 700 | 1 | |a Ferrares Victor Gouveia |u Laboratory of Thermal Engineering and Fluid Systems (LETeF), Department of Mechanical Engineering, São Carlos School of Engineering (EESC), University of São Paulo (USP), Av. Trabalhador São-Carlense, 400, São Carlos 13566-590, SP, Brazil | |
| 700 | 1 | |a Costa, Alexandre Garcia |u Laboratory of Thermal Engineering and Fluid Systems (LETeF), Department of Mechanical Engineering, São Carlos School of Engineering (EESC), University of São Paulo (USP), Av. Trabalhador São-Carlense, 400, São Carlos 13566-590, SP, Brazil | |
| 700 | 1 | |a Donatoni Matheus Medeiros |u Laboratory of Dynamics, Department of Mechanical Engineering, São Carlos School of Engineering (EESC), University of São Paulo (USP), Av. Trabalhador São-Carlense, 400, São Carlos 13566-590, SP, Brazil | |
| 700 | 1 | |a Mani, Marinheiro Maurício |u Laboratory of Thermal Engineering and Fluid Systems (LETeF), Department of Mechanical Engineering, São Carlos School of Engineering (EESC), University of São Paulo (USP), Av. Trabalhador São-Carlense, 400, São Carlos 13566-590, SP, Brazil | |
| 700 | 1 | |a Marchetto Daniel Borba |u Laboratory of Thermal Engineering and Fluid Systems (LETeF), Department of Mechanical Engineering, São Carlos School of Engineering (EESC), University of São Paulo (USP), Av. Trabalhador São-Carlense, 400, São Carlos 13566-590, SP, Brazil | |
| 700 | 1 | |a Tibiriçá, Cristiano Bigonha |u Laboratory of Thermal Engineering and Fluid Systems (LETeF), Department of Mechanical Engineering, São Carlos School of Engineering (EESC), University of São Paulo (USP), Av. Trabalhador São-Carlense, 400, São Carlos 13566-590, SP, Brazil | |
| 773 | 0 | |t Fluids |g vol. 10, no. 12 (2025), p. 326-361 | |
| 786 | 0 | |d ProQuest |t Materials Science Database | |
| 856 | 4 | 1 | |3 Citation/Abstract |u https://www.proquest.com/docview/3286281102/abstract/embedded/75I98GEZK8WCJMPQ?source=fedsrch |
| 856 | 4 | 0 | |3 Full Text + Graphics |u https://www.proquest.com/docview/3286281102/fulltextwithgraphics/embedded/75I98GEZK8WCJMPQ?source=fedsrch |
| 856 | 4 | 0 | |3 Full Text - PDF |u https://www.proquest.com/docview/3286281102/fulltextPDF/embedded/75I98GEZK8WCJMPQ?source=fedsrch |