Heat transfer and airflow study of turbulent mixed convection in a ventilated cavity
| العنوان: | Heat transfer and airflow study of turbulent mixed convection in a ventilated cavity |
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| المؤلفون: | J Xamán, Norma Alejandra Rodríguez, J. F. Hinojosa |
| المصدر: | Journal of Building Physics. 40:204-234 |
| بيانات النشر: | SAGE Publications, 2016. |
| سنة النشر: | 2016 |
| مصطلحات موضوعية: | Convection, Natural convection, Materials science, Convective heat transfer, 020209 energy, Airflow, Thermodynamics, 02 engineering and technology, Building and Construction, Heat transfer coefficient, Mechanics, 01 natural sciences, 010305 fluids & plasmas, Forced convection, Physics::Fluid Dynamics, Combined forced and natural convection, 0103 physical sciences, Heat transfer, 0202 electrical engineering, electronic engineering, information engineering, General Materials Science |
| الوصف: | The experimental and numerical results of the heat transfer and airflow by turbulent mixed convection in a ventilated cavity are presented. The experimental setup was built to use air as the heat transfer fluid. One vertical wall receives a uniform and constant heat flux, whereas the opposite wall is maintained at constant temperature. The remaining walls are thermally insulated. The experimental temperature profiles were obtained for different heat fluxes and air inlet velocities. Five different turbulence models were used to obtain the numerical results. The comparison between experimental and numerical temperatures indicates that the standard k–ε turbulence model presents a better agreement, with maximum percentage differences between 2.0% and 3.0%. The heat transfer coefficient had values between 2.2 and 3.4 W/m2 K, and it increases with the Rayleigh number and the Reynolds number. The experimental and numerical convective heat transfer coefficient predictions are closer for the higher Reynolds number (inlet air velocity of 0.5 m/s). The effects of varying the Rayleigh and Reynolds number on flow patterns and temperature fields were analyzed numerically. |
| تدمد: | 1744-2583 1744-2591 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_________::afd81f53a27b532fbd1ae50ca767d65eTest https://doi.org/10.1177/1744259115611640Test |
| حقوق: | CLOSED |
| رقم الانضمام: | edsair.doi...........afd81f53a27b532fbd1ae50ca767d65e |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 17442583 17442591 |
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