Searching convective/absolute instability boundary for flows with fully numerical dispersion relation
Article
Article Title | Searching convective/absolute instability boundary for flows with fully numerical dispersion relation |
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ERA Journal ID | 962 |
Article Category | Article |
Authors | |
Author | Suslov, Sergey A. |
Journal Title | Computer Physics Communications |
Journal Citation | 142 (1-3), pp. 322-325 |
Number of Pages | 4 |
Year | 2001 |
Place of Publication | Netherlands |
ISSN | 0010-4655 |
1386-9485 | |
1879-2944 | |
Digital Object Identifier (DOI) | https://doi.org/10.1016/S0010-4655(01)00360-5 |
Web Address (URL) | https://www.sciencedirect.com/science/article/abs/pii/S0010465501003605 |
Abstract | The numerical aspects of finding a complete boundary separating regions of convective and absolute instabilities are discussed in the example of mixed convection flow. The dispersion relation associated with the flow is fully numerical and thus the problem of distinguishing its branches in a complex wave number/frequency space arises when the spatio-temporal instability theory is used to analyse the flow. This paper suggests an algorithm to resolve such a difficulty and applies it to obtain stability results for a wide range of physical parameters governing the example flow. |
Keywords | spatio-temporal instabilities; convective/absolute instability; dispersion relation |
ANZSRC Field of Research 2020 | 401207. Fundamental and theoretical fluid dynamics |
401204. Computational methods in fluid flow, heat and mass transfer (incl. computational fluid dynamics) | |
Public Notes | Deposited in accordance with the copyright policy of the publisher. Copyright 2001 Elsevier This is the authors' version of the work. It is posted here with permission of the publisher for your personal use. No further distribution is permitted. |
Byline Affiliations | Computational Engineering and Science Research Centre |
https://research.usq.edu.au/item/9y335/searching-convective-absolute-instability-boundary-for-flows-with-fully-numerical-dispersion-relation
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