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The effect of a solid boundary on the propagation of thermodynamic disturbances in a rarefied gas

Abstract:

We study the effect of a rigid boundary on the propagation of thermodynamic disturbances in a gas under non-continuum conditions. We consider a semi-infinite setup confined by an infinite planar wall and introduce initial gas disturbances in the form of density and temperature inhomogeneities. The problem is formulated for arbitrary small-amplitude perturbations and analyzed in the entire range of gas rarefaction rates, governed by the Knudsen (Kn) number. Our results describe the system rela...

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Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1063/5.0020947

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Institution:
University of Oxford
Division:
MPLS
Department:
Mathematical Institute
Role:
Author
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Role:
Author
ORCID:
0000-0002-3657-4837
Publisher:
AIP Publishing
Journal:
Physics of Fluids More from this journal
Volume:
32
Issue:
9
Article number:
092002
Publication date:
2020-09-01
Acceptance date:
2020-08-01
DOI:
EISSN:
1089-7666
ISSN:
1070-6631
Language:
English
Keywords:
Pubs id:
1158187
Local pid:
pubs:1158187
Deposit date:
2021-01-24

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