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On the enhancement of heat transfer in pulsating combustion flows
Författare
Redaktör
- JS Lee
Summary, in English
In Fourier's law neither a direct dependence of the heat conduction on the velocity and the velocity gradient, nor an interaction between the velocity and temperature field is given. A first extension would be to introduce a more general constitutive relation for the heat conduction vector. For that reason, in order to describe the observed phenomenon, a new non-linear constitutive relation for the heat conduction vector has been suggested. An additional term, dependent on the velocity gradient operating on the temperature gradient, will effect the heat transfer.
To be able to examine the consequences of the new nonlinear constitutive relation suggested, a thermo-mechanical pulsating flow between two parallel plates is considered. By approximating the general constitutive equations in the postulated general equations of motion, analytical solutions of the velocity and temperature fields can be found to be in good agreement with experimental results.
The analytical expressions for the velocity and temperature profiles can then be used in the estimation of the heat transfer, which can be compared with experimental observations.
Avdelning/ar
- Mekanik
- Förbränningsfysik
Publiceringsår
1998
Språk
Engelska
Sidor
381-386
Publikation/Tidskrift/Serie
HEAT TRANSFER
Volym
VOL 5 - GENERAL PAPERS
Dokumenttyp
Konferensbidrag
Förlag
Taylor & Francis
Ämne
- Applied Mechanics
- Atom and Molecular Physics and Optics
Conference name
11th International Heat Transfer Conference
Conference date
1998-08-23 - 1998-08-28
Status
Published
ISBN/ISSN/Övrigt
- IDS Number: BQ70W