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Experimental and computational investigation of flow structure of buoyancy induced flow in heated rotating cavities

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posted on 2023-06-10, 00:54 authored by Seyed Mostafa FazeliSeyed Mostafa Fazeli, Vasudevan KanjirakkadVasudevan Kanjirakkad, Christopher Long
This paper presents Laser-Doppler Anemometry (LDA) measurements obtained from the Sussex Multiple Cavity test facility. This facility comprises a number of heated disc cavities with a cool bore flow and is intended to emulate the secondary air system flow in an H.P compressor. Measurements were made of the axial and tangential components of velocity over the respective range of Rossby, Rotational and Axial Reynolds numbers, (Ro, Re_? and Re_z), 0.32 < Ro < 1.28, Re_? = 7.1×10^5, 1.2×10^4 < Re_z < 4.8×10^4 and for the values of the buoyancy parameter (ß?T) : 0.50 < ß?T < 0.58. The frequency spectra analysis of the tangential velocity indicates the existence of pairs of vortices inside the cavities. The swirl number, Xk, calculated from these measurements show that the cavity fluid approaches solid body rotation near the shroud region. The paper also presents results from Unsteady Reynolds-Averaged Navier-Stokes (URANS) calculations for the test case where Ro?=?0.64. The time-averaged LDA data and numerical results show encouraging agreement.

History

Publication status

  • Published

File Version

  • Published version

Journal

Journal of the Global Power and Propulsion Society

ISSN

2515-3080

Publisher

Global Power and Propulsion Society (GPPS)

Volume

5

Page range

148-163

Department affiliated with

  • Engineering and Design Publications

Research groups affiliated with

  • Thermo-Fluid Mechanics Research Centre Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2021-09-10

First Open Access (FOA) Date

2021-09-10

First Compliant Deposit (FCD) Date

2021-09-10

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