The University of Southampton
University of Southampton Institutional Repository

Turbulent-wake-cascade interaction noise simulations using a hybrid sliding mesh method

Turbulent-wake-cascade interaction noise simulations using a hybrid sliding mesh method
Turbulent-wake-cascade interaction noise simulations using a hybrid sliding mesh method

Accurate predictions of broadband noise generated by fan-wake-OGV (Outlet Guide Vane) interaction remain challenging due to the wide range of acoustic and turbulent length-scales. Parameters such as the OGV vane thickness, fan wake structure, and advance ratio may affect the sound generation and propagation characteristics. A systematic study of these design parameters via full-scale and three-dimensional simulations is not convenient as it will inherit a significant computational cost. In this work, the fan and OGV geometry is represented as an unwrapped two-dimensional cascade with periodic upper and lower boundaries. A two-dimensional Euler solver with a hybrid sliding grid method is applied to account for the fan-OGV motion, and isotropic turbulence is synthesised and injected upstream of sliding surface to model the fan-wake. The numerical results are compared to an analytical model that is an extension of Amiet's flat-plate noise model to a cascade of flat plates.

Aerofoil noise, Sliding grid, Synthetic turbulence
1358-1365
International Institute of Acoustics and Vibration (IIAV)
Ying, Wei
0141fc95-7e38-4432-a89d-4dcb9608ce51
Fattah, Ryu
b7fbaf19-132f-4a04-828e-6656b4d83f24
Zhang, Xin
3056a795-80f7-4bbd-9c75-ecbc93085421
Gea-Aguilera, Fernando
8aaa69d6-7618-4b2e-9942-e1ab4084aba4
Ying, Wei
0141fc95-7e38-4432-a89d-4dcb9608ce51
Fattah, Ryu
b7fbaf19-132f-4a04-828e-6656b4d83f24
Zhang, Xin
3056a795-80f7-4bbd-9c75-ecbc93085421
Gea-Aguilera, Fernando
8aaa69d6-7618-4b2e-9942-e1ab4084aba4

Ying, Wei, Fattah, Ryu, Zhang, Xin and Gea-Aguilera, Fernando (2018) Turbulent-wake-cascade interaction noise simulations using a hybrid sliding mesh method. In 25th International Congress on Sound and Vibration 2018, ICSV 2018: Hiroshima Calling. vol. 3, International Institute of Acoustics and Vibration (IIAV). pp. 1358-1365 .

Record type: Conference or Workshop Item (Paper)

Abstract

Accurate predictions of broadband noise generated by fan-wake-OGV (Outlet Guide Vane) interaction remain challenging due to the wide range of acoustic and turbulent length-scales. Parameters such as the OGV vane thickness, fan wake structure, and advance ratio may affect the sound generation and propagation characteristics. A systematic study of these design parameters via full-scale and three-dimensional simulations is not convenient as it will inherit a significant computational cost. In this work, the fan and OGV geometry is represented as an unwrapped two-dimensional cascade with periodic upper and lower boundaries. A two-dimensional Euler solver with a hybrid sliding grid method is applied to account for the fan-OGV motion, and isotropic turbulence is synthesised and injected upstream of sliding surface to model the fan-wake. The numerical results are compared to an analytical model that is an extension of Amiet's flat-plate noise model to a cascade of flat plates.

Full text not available from this repository.

More information

Published date: 2018
Venue - Dates: 25th International Congress on Sound and Vibration 2018: Hiroshima Calling, ICSV 2018, Japan, 2018-07-07 - 2018-07-11
Keywords: Aerofoil noise, Sliding grid, Synthetic turbulence

Identifiers

Local EPrints ID: 427288
URI: http://eprints.soton.ac.uk/id/eprint/427288
PURE UUID: a5480e1f-c52e-43d9-9e32-34b703abda88

Catalogue record

Date deposited: 11 Jan 2019 17:30
Last modified: 21 Jan 2020 17:31

Export record

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×