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

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

Description

Title: Numerical study of effect of wall heating conditions on heat transfer performance of internal cooling channel
Author/s:
  • Wang, Zhi
  • Corral Garcia, Roque
Item Type: Presentation at Congress or Conference (Article)
Event Title: 12th European Turbomachinery Conference
Event Dates: 3-7 Apr 2017
Event Location: Stockholm, Sweden
Title of Book: 12th European Turbomachinery Conference : Turbomachinery fluid dynamics and thermodynamics
Date: 2017
Subjects:
Freetext Keywords: Heat transfer,cooling
Faculty: E.T.S. de Ingeniería Aeronáutica y del Espacio (UPM)
Department: Matemática Aplicada a la Ingeniería Aeroespacial
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

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.

Funding Projects

TypeCodeAcronymLeaderTitle
FP7233799ERICKARolls-Royce plcEngine Representative Internal Cooling Knowledge and Applications

More information

Item ID: 46012
DC Identifier: http://oa.upm.es/46012/
OAI Identifier: oai:oa.upm.es:46012
Official URL: http://www.euroturbo.eu/publications/proceedings-papers/etc2017-357/
Deposited by: Memoria Investigacion
Deposited on: 21 Feb 2018 12:00
Last Modified: 21 Feb 2018 12:00
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