Block-structured adaptive mesh refinement for computational aeroacoustics
Block-structured adaptive mesh refinement for computational aeroacoustics
High-order spatial discretization schemes based on block-structured adaptive mesh refinement (AMR) method are developed to solve computational aeroacoustics (CAA) problems, with the aim of improving efficiency and reducing costs. In this presentation we present several aspects of AMR application. Firstly, the AMR algorithm will be introduced. Basic work flow charts and pseudo codes are provided. The cost of parallel AMR operations is profiled to show that its burden is not significant. In the second part a number of numerical issues including implementation of high-order spatial schemes (dispersion-relation-preserving scheme and optimized prefactored compact scheme), fine-coarse interfaces under the AMR environment, stability analysis and filter/damping techniques are addressed. To demonstrate the feasibility and efficiency of the approach, the code is applied to some benchmark CAA problems. In particular the problem of spinning modal wave radiation from an unflanged duct is considered. The computed far-field sound directivity is found to agree well with analytical solutions, and the computing time is about one third of that on a uniform mesh. Finally a realistic engine intake problem is studied to show the working of parallel AMR code.
1-48
Society for Industrial and Applied Mathematics
Huang, Xun
57c88e52-954d-4e5a-94ca-3547a4cb9440
Zhang, Xin
3056a795-80f7-4bbd-9c75-ecbc93085421
2006
Huang, Xun
57c88e52-954d-4e5a-94ca-3547a4cb9440
Zhang, Xin
3056a795-80f7-4bbd-9c75-ecbc93085421
Huang, Xun and Zhang, Xin
(2006)
Block-structured adaptive mesh refinement for computational aeroacoustics.
In Proceedings of SIAM 11th International Conference on Numerical Combustion.
Society for Industrial and Applied Mathematics.
.
Record type:
Conference or Workshop Item
(Paper)
Abstract
High-order spatial discretization schemes based on block-structured adaptive mesh refinement (AMR) method are developed to solve computational aeroacoustics (CAA) problems, with the aim of improving efficiency and reducing costs. In this presentation we present several aspects of AMR application. Firstly, the AMR algorithm will be introduced. Basic work flow charts and pseudo codes are provided. The cost of parallel AMR operations is profiled to show that its burden is not significant. In the second part a number of numerical issues including implementation of high-order spatial schemes (dispersion-relation-preserving scheme and optimized prefactored compact scheme), fine-coarse interfaces under the AMR environment, stability analysis and filter/damping techniques are addressed. To demonstrate the feasibility and efficiency of the approach, the code is applied to some benchmark CAA problems. In particular the problem of spinning modal wave radiation from an unflanged duct is considered. The computed far-field sound directivity is found to agree well with analytical solutions, and the computing time is about one third of that on a uniform mesh. Finally a realistic engine intake problem is studied to show the working of parallel AMR code.
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Published date: 2006
Venue - Dates:
SIAM 11th International Conference on Numerical Combustion, Granada, Spain, 2006-04-23 - 2006-04-26
Organisations:
Aerodynamics & Flight Mechanics
Identifiers
Local EPrints ID: 42977
URI: http://eprints.soton.ac.uk/id/eprint/42977
PURE UUID: bb139f84-e290-47e1-afd8-804ef1ad43c0
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Date deposited: 05 Jan 2007
Last modified: 20 Feb 2024 11:38
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Contributors
Author:
Xun Huang
Author:
Xin Zhang
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