Weigand, B. ; Wolf, M. ; Beer, Hans (1997)
Heat transfer in laminar and turbulent flows in the thermal entrance region of concentric annuli: Axial heat conduction effects in the fluid.
In: Heat and Mass Transfer, 33 (1-2)
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
The present analytical study investigates the influence of axial heat conduction within the flow on the heat transfer in the thermal entrance region of a concentric annular duct with laminar and turbulent internal flow. The solution is based on a decomposition of the elliptic energy equation into a pair of first order partial differential equations. By using a new defined vector norm it is possible to obtain a selfadjoint eigenvalue problem for the extended Graetz problem even though the original convective diffusion operator is non-selfadjoint. The obtained exact analytical solutions for the Graetz problem with axial heat conduction are as simple to compute as the related solutions of the parabolic problem.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 1997 |
| Autor(en): | Weigand, B. ; Wolf, M. ; Beer, Hans |
| Art des Eintrags: | Bibliographie |
| Titel: | Heat transfer in laminar and turbulent flows in the thermal entrance region of concentric annuli: Axial heat conduction effects in the fluid |
| Sprache: | Englisch |
| Publikationsjahr: | 1 Januar 1997 |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Heat and Mass Transfer |
| Jahrgang/Volume einer Zeitschrift: | 33 |
| (Heft-)Nummer: | 1-2 |
| URL / URN: | http://dx.doi.org/10.1007/s002310050162 |
| Kurzbeschreibung (Abstract): | The present analytical study investigates the influence of axial heat conduction within the flow on the heat transfer in the thermal entrance region of a concentric annular duct with laminar and turbulent internal flow. The solution is based on a decomposition of the elliptic energy equation into a pair of first order partial differential equations. By using a new defined vector norm it is possible to obtain a selfadjoint eigenvalue problem for the extended Graetz problem even though the original convective diffusion operator is non-selfadjoint. The obtained exact analytical solutions for the Graetz problem with axial heat conduction are as simple to compute as the related solutions of the parabolic problem. |
| Fachbereich(e)/-gebiet(e): | 16 Fachbereich Maschinenbau 16 Fachbereich Maschinenbau > Fachgebiet für Technische Thermodynamik (TTD) |
| Hinterlegungsdatum: | 26 Feb 2015 16:53 |
| Letzte Änderung: | 05 Aug 2019 13:05 |
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