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EFFECT OF BOLTS ON FLOW AND HEAT TRANSFER IN A ROTOR-STATOR DISC

Noor Mohamed, S, Chew, J and Hills, NJ (2016) EFFECT OF BOLTS ON FLOW AND HEAT TRANSFER IN A ROTOR-STATOR DISC In: ASME Turbo Expo 2016, 2016-06-13 - 2016-06-17, Seoul, South Korea.

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Abstract

Previous studies have indicated some differences between steady CFD predictions of flow in a rotor-stator disc cavity with rotating bolts compared to measurements. Recently time-dependent CFD simulations have revealed the unsteadiness present in the flow and have given improved agreement with measurements. In this paper unsteady Reynolds averaged Navier-Stokes (URANS) 3600 model CFD calculations of a rotor-stator cavity with rotor bolts were performed in order to better understand the flow and heat transfer within a disc cavity previously studied experimentally by other workers. It is shown that the rotating bolts generate unsteadiness due to wake shedding which creates time-dependent flow patterns within the cavity. At low throughflow conditions, the unsteady flow significantly increases the average disc temperature. A systematic parametric study is presented giving insight into the influence of number of bolts, mass flow rate, cavity gap ratio and the bolts-to-shroud gap ratio on the time depended flow within the cavity.

Item Type: Conference or Workshop Item (Conference Paper)
Subjects : subj_Mechanical_Engineering
Authors :
AuthorsEmailORCID
Noor Mohamed, SUNSPECIFIEDUNSPECIFIED
Chew, JUNSPECIFIEDUNSPECIFIED
Hills, NJUNSPECIFIEDUNSPECIFIED
Date : 13 June 2016
Copyright Disclaimer : Copyright 2016 by Rolls-Royce Plc.
Depositing User : Symplectic Elements
Date Deposited : 06 Apr 2016 15:13
Last Modified : 08 Apr 2016 08:25
URI: http://epubs.surrey.ac.uk/id/eprint/810357

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