Heat Transfer Evaluation for a Two-Pass Smooth Wall Channel: Stationary and Rotating Cases
| Autor: | Ryoichi S. Amano, Mandana S. Saravani, Nicholas J. DiPasquale, Ahmad I. Abbas |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
Buoyancy Renewable Energy Sustainability and the Environment 020209 energy Mechanical Engineering Energy Engineering and Power Technology Reynolds number 02 engineering and technology Mechanics Heat transfer coefficient 010501 environmental sciences engineering.material Rotation 01 natural sciences Physics::Fluid Dynamics symbols.namesake Fuel Technology Geochemistry and Petrology Heat transfer 0202 electrical engineering electronic engineering information engineering engineering symbols Boundary value problem 0105 earth and related environmental sciences Communication channel |
| Zdroj: | Journal of Energy Resources Technology. 142 |
| ISSN: | 1528-8994 0195-0738 |
| DOI: | 10.1115/1.4045535 |
| Popis: | This study presents findings on combined effects of Reynolds number and rotational effect for a two-pass channel with a 180-deg turn, numerically and experimentally. To have a better understanding of the flow behavior and to create a baseline for future studies, a smooth wall channel with the square cross section is used in this study. The Reynolds number varies between 6000 and 35,000. Furthermore, by changing the rotational speed, the maximum rotation number of 1.5 is achieved. For the numerical investigation, large eddy simulation (LES) is utilized. Results from the numerical study show a good agreement with the experimental data. From the results, it can be concluded that increasing both Reynolds number and rotational speed is in favor of the heat transfer coefficient enhancement, especially in the turn region. |
| Databáze: | OpenAIRE |
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