Journal
INTERNATIONAL JOURNAL OF COMPUTATIONAL FLUID DYNAMICS
Volume 18, Issue 6, Pages 503-511Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/10618560410001673515
Keywords
computational aeroacoustics; impedance boundary condition; time-domain method
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This paper reviews the short history, motivation, numerical and theoretical issues, and development of methods for treating a boundary as a reflective/absorptive surface for the time-domain computation of waves in general and acoustic waves in particular. It begins with the extension and implementation of the frequency-domain impedance to a time-domain impedance-equivalent boundary condition (TDIBC), and illustrates how the theoretical, numerical, and implementation issues are addressed and resolved for acoustic/aeroacoustic applications. Comments are also made on the extendibility and applicability of the concept and TDIBC to other fields and types of problems.
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