TY - GEN
T1 - Implementation of Direct Acoustic Simulation using ANSYS Fluent
AU - Huang, Guangyuan
AU - Leung, Randolph Chi Kin
AU - Yang, Zhigang
N1 - Funding Information:
The 1st author gratefully acknowledges the support given under Joint PhD Programme between The Hong Kong Polytechnic University and Tongji University. The 2nd author gratefully acknowledge the support given by The Hong Kong Polytechnic University under Grand No. G-YBDK. The 3rd author gratefully acknowledges the support given by Shanghai Key lab of Vehicle of vehicle Aerodynamics and Vehicle Thermal Management Systems and the Fundamental Research Funds for Central Universities.
Publisher Copyright:
© INTER-NOISE 2021 .All right reserved.
PY - 2021/8
Y1 - 2021/8
N2 - Direct Acoustic Simulation (DAS) is a powerful Computational Aero-Acoustics method that obtains hydrodynamic and acoustic solutions simultaneously by solving compressible Navier-Stokes equation together with state equation of ideal gas. Thus, DAS has advantages for cases with flow-acoustic coupling and high Mach numbers (Ma). With an increasing demand of massive-scale calculations, a robust numerical solver for DAS is required. ANSYS Fluent is a suitable CFD platform with proven robustness. However, there is no direct implementation of DAS in the current version of ANSYS Fluent. The present study, therefore, aims to investigate an approach for implementing DAS using ANSYS Fluent. Given the acoustic part of fluctuations is much smaller than the hydrodynamic part in amplitudes, a DAS solver requires high accuracy and low dissipation. Based on these needs, proper solution methods, spatial-discrete methods and boundary conditions are firstly determined through simple calculations of two-dimensional propagating plane waves. Afterwards, aeroacoustics of a two-dimensional cavity flow at Ma = 0.6 is calculated to verify the capability for solving separating flow with the aforementioned set-up. Finally, aeroacoustics of a cylindrical bluff body at a turbulent regime and Ma = 0.2 is calculated in three-dimensions to verify the capability for solving turbulent flow using Monotonically Integrated Large Eddy Simulation.
AB - Direct Acoustic Simulation (DAS) is a powerful Computational Aero-Acoustics method that obtains hydrodynamic and acoustic solutions simultaneously by solving compressible Navier-Stokes equation together with state equation of ideal gas. Thus, DAS has advantages for cases with flow-acoustic coupling and high Mach numbers (Ma). With an increasing demand of massive-scale calculations, a robust numerical solver for DAS is required. ANSYS Fluent is a suitable CFD platform with proven robustness. However, there is no direct implementation of DAS in the current version of ANSYS Fluent. The present study, therefore, aims to investigate an approach for implementing DAS using ANSYS Fluent. Given the acoustic part of fluctuations is much smaller than the hydrodynamic part in amplitudes, a DAS solver requires high accuracy and low dissipation. Based on these needs, proper solution methods, spatial-discrete methods and boundary conditions are firstly determined through simple calculations of two-dimensional propagating plane waves. Afterwards, aeroacoustics of a two-dimensional cavity flow at Ma = 0.6 is calculated to verify the capability for solving separating flow with the aforementioned set-up. Finally, aeroacoustics of a cylindrical bluff body at a turbulent regime and Ma = 0.2 is calculated in three-dimensions to verify the capability for solving turbulent flow using Monotonically Integrated Large Eddy Simulation.
UR - http://www.scopus.com/inward/record.url?scp=85117387858&partnerID=8YFLogxK
U2 - 10.3397/IN-2021-1787
DO - 10.3397/IN-2021-1787
M3 - Conference article published in proceeding or book
AN - SCOPUS:85117387858
T3 - Proceedings of INTER-NOISE 2021 - 2021 International Congress and Exposition of Noise Control Engineering
BT - Proceedings of INTER-NOISE 2021 - 2021 International Congress and Exposition of Noise Control Engineering
A2 - Dare, Tyler
A2 - Bolton, Stuart
A2 - Davies, Patricia
A2 - Xue, Yutong
A2 - Ebbitt, Gordon
PB - The Institute of Noise Control Engineering of the USA, Inc.
T2 - 50th International Congress and Exposition of Noise Control Engineering, INTER-NOISE 2021
Y2 - 1 August 2021 through 5 August 2021
ER -