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Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/10054/10126

Title: Screech frequency prediction in underexpanded axisymmetric screeching jets
Authors: CHATTERJEE, A
GHODAKE, D
SINGH, A
Keywords: efficient implementation
numerical-simulation
generation
schemes
Issue Date: 2009
Publisher: MULTI-SCIENCE PUBL CO LTD
Citation: INTERNATIONAL JOURNAL OF AEROACOUSTICS, 8(5), 499-510
Abstract: Average shock spacing and average standing wavelength are estimated from computed near-field of axisymmetric underexpanded screeching jets at low supersonic Mach numbers. These are used to predict screech frequencies based on existing formulations which rely either on shock spacing or on standing wavelength. Results obtained suggest that shock spacing and standing wavelength may respectively be dominant length scales for A1 and A2 axisymmetric screech modes observed for axisymmetric jets at low supersonic Mach numbers. This implies that presence of two axisymmetric screech modes in supersonic jet screech could be attributed to the two co-existing length scales in the jet near-field.
URI: http://dx.doi.org/10.1260/147547209788549307
http://dspace.library.iitb.ac.in/xmlui/handle/10054/10126
http://hdl.handle.net/10054/10126
ISSN: 1475-472X
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