Flow and Heat Transfer in Rotating Cavities

Flow and Heat Transfer in Rotating Cavities

One of the promising trends to increase the thermal efficiency of gas turbines is to raise the gas temperature at the turbine inlet. In modern gas turbines, turbine section operates under severe thermal conditions. Cooling of the turbine section is one of the key technologies for further improvement...

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Veröffentlicht in:Nihon Kikai Gakkai rombunshuu. B hen 1999/05/25, Vol.65(633), pp.1710-1715
Hauptverfasser: SAITOH, Hironori, MOCHIZUKI, Sadanari, MURATA, Akira, SAITOH, Hiroshi
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Sprache:eng ; jpn
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Flow Visualization
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container_end_page 1715
container_issue 633
container_start_page 1710
container_title Nihon Kikai Gakkai rombunshuu. B hen
container_volume 65
creator SAITOH, Hironori
MOCHIZUKI, Sadanari
MURATA, Akira
SAITOH, Hiroshi
description One of the promising trends to increase the thermal efficiency of gas turbines is to raise the gas temperature at the turbine inlet. In modern gas turbines, turbine section operates under severe thermal conditions. Cooling of the turbine section is one of the key technologies for further improvement of gas turbines to keep their safe working. The objective of this study is to investigate the flow and heat transfer in a low-pressure turbine which has cavities formed by an assembly of turbine disks. This study employs two dimensionless parameters which govern flow and heat transfer in rotating cavities. These are throughflow Reynolds number and rotational Reynolds number. Flow visualization and heat transfer experiments in rotating situation were carried out in wide range of experimental conditions. This paper focuses on the effect of forced convection by the throughflow on flow and heat transfer characteristics in rotating cavities.
doi_str_mv 10.1299/kikaib.65.1710
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source Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; J-STAGE (Japan Science & Technology Information Aggregator, Electronic) Freely Available Titles - Japanese
subjects Flow Visualization
title Flow and Heat Transfer in Rotating Cavities
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