Effects of the wind speeds on heat transfer in a street canyon with a skytrain station
Autor: | Benchawan Wiwatanapataphee, Nathnarong Khajohnsaksumeth, Surapa Pothiphan |
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Jazyk: | angličtina |
Rok vydání: | 2019 |
Předmět: |
Finite element method
Meteorology K-epsilon turbulence model Airflow 01 natural sciences Wind speed law.invention law Heat transfer 0101 mathematics Mathematics k-ε turbulence model Skytrain station Algebra and Number Theory Mathematical model Turbulence Applied Mathematics lcsh:Mathematics 010102 general mathematics Natural ventilation lcsh:QA1-939 Street canyon 010101 applied mathematics Ventilation (architecture) Analysis |
Zdroj: | Advances in Difference Equations, Vol 2019, Iss 1, Pp 1-15 (2019) |
ISSN: | 1687-1847 |
Popis: | The street under a skytrain station can be seen in many urban cities. Due to the cavity geometry of the street canyon, natural ventilation is decreased. The reduction of the ventilation causes the heat accumulation in the street canyon. To keep the thermal climate at an acceptable level in the street canyon, controlling the air movement with proper temperature is important. In this paper, mathematical models of air flow and heat transfer in the skytrain street canyon are developed. The governing equations are the Reynolds-averaged Navier–Stokes equations and the energy equation. Finite element method is applied for the solution of the problem. The effect of wind speeds on temperature distribution in the street canyon is investigated. Three levels of wind speed including gentle, moderate, and strong wind speeds are chosen in this study. The results indicate that our model can capture the air flow and temperature distribution within a street canyon with a skytrain station. |
Databáze: | OpenAIRE |
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