Conferencias:
NUMERICAL STUDY OF EFFECT OF WALL HEATING CONDITIONS ON HEAT TRANSFER PERFORMANCE OF ROTATING INTERNAL COOLING CHANNEL
NUMERICAL STUDY OF EFFECT OF WALL HEATING CONDITIONS ON HEAT TRANSFER PERFORMANCE OF ROTATING INTERNAL COOLING CHANNEL
Año:2017
Áreas de investigación
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Turbomaquinaria
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| This paper investigates the impacts of wall heating conditions on heat transfer performace for a rotating channel with one side smooth and one side roughened by 45 degree inclined ribs. Previous experimental and numerical studies for only ribbed wall heated case showed that rotation has significantly negative impact on heat transfer performance. In order to investigate this uncommon behaviour, RANS simulations were conducted under three different wall heating conditions in present study: ribbed wall heated, all walls heated and adiabatic conditions. Numerical results show that the uneven wall heating condtions has negligible impact on stationary case, however, it has a large influence on rotational cases, in both the heat transfer and the fluid field. This is because in rotating cases, uneven heatings result in different buoyancy effects on trailing and leading walls that alter the main flow velocity profile. As a consequence, also secondary flows and heat transfer performance are affected. | |
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Internacional
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Entidad relacionada
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EuroTurbo |
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Nacionalidad Entidad
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Sin nacionalidad |
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Lugar del congreso
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Stockholm, Sweden |
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Participantes
- Autor: Zhi Wang . (UPM)
- Autor: Roque Corral Garcia (UPM)
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
- Creador: Departamento: Mecánica de Fluidos y Propulsión Aeroespacial
S2i 2023 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)