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Diffusive-to-ballistic transition of the modulated heat transport in a rarefied air chamber
- Source :
- AIP Advances, Vol 7, Iss 1, Pp 015032-015032-8 (2017)
- Publication Year :
- 2017
- Publisher :
- AIP Publishing LLC, 2017.
-
Abstract
- Modulated heat transfer in air subject to pressures from 760 Torr to 10-4 Torr is experimentally studied by means of a thermal-wave resonant cavity placed in a vacuum chamber. This is done through the analysis of the amplitude and phase delay of the photothermal signal as a function of the cavity length and pressure through of the Knudsenās number. The viscous, transitional, and free molecular regimes of heat transport are observed for pressures P>1.5 Torr, 25 mTorr
Details
- Language :
- English
- ISSN :
- 21583226
- Volume :
- 7
- Issue :
- 1
- Database :
- Directory of Open Access Journals
- Journal :
- AIP Advances
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.0af3f6e8beba4eb5aee4c469db01dc77
- Document Type :
- article
- Full Text :
- https://doi.org/10.1063/1.4972123