Numerical study of effect of wall heating conditions on heat transfer performance of internal cooling channel

Wang, Zhi y Corral Garcia, Roque (2017). Numerical study of effect of wall heating conditions on heat transfer performance of internal cooling channel. En: "12th European Turbomachinery Conference", 3-7 Apr 2017, Stockholm, Sweden.

Descripción

Título: Numerical study of effect of wall heating conditions on heat transfer performance of internal cooling channel
Autor/es:
  • Wang, Zhi
  • Corral Garcia, Roque
Tipo de Documento: Ponencia en Congreso o Jornada (Artículo)
Título del Evento: 12th European Turbomachinery Conference
Fechas del Evento: 3-7 Apr 2017
Lugar del Evento: Stockholm, Sweden
Título del Libro: 12th European Turbomachinery Conference : Turbomachinery fluid dynamics and thermodynamics
Fecha: 2017
Materias:
Palabras Clave Informales: Heat transfer,cooling
Escuela: E.T.S. de Ingeniería Aeronáutica y del Espacio (UPM)
Departamento: Matemática Aplicada a la Ingeniería Aeroespacial
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

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.

Proyectos asociados

TipoCódigoAcrónimoResponsableTítulo
FP7233799ERICKARolls-Royce plcEngine Representative Internal Cooling Knowledge and Applications

Más información

ID de Registro: 46012
Identificador DC: http://oa.upm.es/46012/
Identificador OAI: oai:oa.upm.es:46012
URL Oficial: http://www.euroturbo.eu/publications/proceedings-papers/etc2017-357/
Depositado por: Memoria Investigacion
Depositado el: 21 Feb 2018 12:00
Ultima Modificación: 21 Feb 2018 12:00
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