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Problem of proper decomposition and initialization of acoustic and entropy modes in a gas affected by the mass force
Abstract
The relations connecting perturbations specific for acoustic and entropy modes in an accelerated fluid or in a fluid affected by constant mass force, are derived. They allow to decompose the total vector of perturbations and the overall energy into acoustic and non-acoustic parts uniquely at any instant. In order to do this, three quantities are required, for example total perturbations in entropy, pressure and velocity. The evaluations are made in regard to the content of acoustic and non-acoustic parts of the total energy excluding its kinetic part. In some cases, exact relations may be derived.
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- Accepted or Published Version
- DOI:
- Digital Object Identifier (open in new tab) 10.1016/j.apm.2012.02.037
- License
- Copyright (2012 Elsevier Inc.)
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- Category:
- Articles
- Type:
- artykuł w czasopiśmie wyróżnionym w JCR
- Published in:
-
APPLIED MATHEMATICAL MODELLING
no. 37,
pages 629 - 635,
ISSN: 0307-904X - Language:
- English
- Publication year:
- 2013
- Bibliographic description:
- Leble S., Perelomova A.: Problem of proper decomposition and initialization of acoustic and entropy modes in a gas affected by the mass force// APPLIED MATHEMATICAL MODELLING. -Vol. 37, nr. 3 (2013), s.629-635
- DOI:
- Digital Object Identifier (open in new tab) 10.1016/j.apm.2012.02.037
- Verified by:
- Gdańsk University of Technology
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