Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/34421
Title: Time-domain impedance boundary conditions with mean flow effects
Authors: Ju, H
Fung, KY
Issue Date: 2001
Publisher: American Institute of Aeronautics and Astronautics, Inc.
Source: AIAA journal, 2001, v. 39, no. 9, p. 1683-1690 How to cite?
Journal: AIAA journal
Abstract: The development of time-domain impedance boundary condition (TDIBC) for prediction of aeroacoustics in wall bounded flows is explored. The presence of a flow and its boundary layer over a wave-absorbing surface com- plicates the modeling and implementation of TDIBC. Considered here are three different approaches to account for the effects of wave refraction, absorption, reflection, and convection at a wave-absorbing wall. They are the effective plane-wave impedance in a slip flow, convection-modified impedance in a slip flow, and wave reflection in a mean shear-layer flow. Their validity, effectiveness, stability, and implementation in time-domain finite-difference schemes will be discussed. The schemes and methods developed here are benchmarked and compared with experiment and other methods.
URI: http://hdl.handle.net/10397/34421
ISSN: 0001-1452 (ISSN)
1533-385X (EISSN)
DOI: 10.2514/2.1525
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