Shishkina, Olga und Wagner, Claus (2011) Modeling the influence of regular wall roughnesses on the heat transport. Journal of Physics: Conference Series, 318 (02), Seiten 1-5. Institute of Physics (IOP) Publishing. doi: 10.1088/1742-6596/318/2/022034. ISSN 1742-6588.
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Offizielle URL: http://iopscience.iop.org/1742-6596/318/2
Kurzfassung
We investigate the effect of regular wall roughness on the heat transport in thermal convection. The roughness is introduced by a set of rectangular heated/cooled obstacles located at the corresponding plates. An analytical model to estimate the Nusselt number deviations caused by the wall roughness is developed, which is based on the Prandtlâ��Blasius boundary layer equations and is valid for moderate Rayleigh numbers (kleiner ungef�¤hr 10 hoch 8) and a regular wall roughness, for which the height of the obstacles and the distance between them are significantly larger than the thickness of the thermal boundary layers. The model is validated in two-dimensional simulations, for different aspect ratios of the obstacles. It is found that the model predicts the heat transport with errors kleiner gleich 6% for all investigated cases.
elib-URL des Eintrags: | https://elib.dlr.de/73667/ | ||||||||||||
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Dokumentart: | Zeitschriftenbeitrag | ||||||||||||
Zusätzliche Informationen: | Paper: 022034 | ||||||||||||
Titel: | Modeling the influence of regular wall roughnesses on the heat transport | ||||||||||||
Autoren: |
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Datum: | 2011 | ||||||||||||
Erschienen in: | Journal of Physics: Conference Series | ||||||||||||
Referierte Publikation: | Ja | ||||||||||||
Open Access: | Nein | ||||||||||||
Gold Open Access: | Nein | ||||||||||||
In SCOPUS: | Ja | ||||||||||||
In ISI Web of Science: | Nein | ||||||||||||
Band: | 318 | ||||||||||||
DOI: | 10.1088/1742-6596/318/2/022034 | ||||||||||||
Seitenbereich: | Seiten 1-5 | ||||||||||||
Verlag: | Institute of Physics (IOP) Publishing | ||||||||||||
ISSN: | 1742-6588 | ||||||||||||
Status: | veröffentlicht | ||||||||||||
Stichwörter: | heat transfer, heat transport, wall roughness, | ||||||||||||
HGF - Forschungsbereich: | Luftfahrt, Raumfahrt und Verkehr | ||||||||||||
HGF - Programm: | Verkehr | ||||||||||||
HGF - Programmthema: | Bodengebundener Verkehr (alt) | ||||||||||||
DLR - Schwerpunkt: | Verkehr | ||||||||||||
DLR - Forschungsgebiet: | V BF - Bodengebundene Fahrzeuge | ||||||||||||
DLR - Teilgebiet (Projekt, Vorhaben): | V - Fahrzeugenergiesysteme (alt) | ||||||||||||
Standort: | Göttingen | ||||||||||||
Institute & Einrichtungen: | Institut für Aerodynamik und Strömungstechnik > Fluidsysteme | ||||||||||||
Hinterlegt von: | Shishkina, PD Dr. habil. Olga | ||||||||||||
Hinterlegt am: | 17 Jan 2012 12:06 | ||||||||||||
Letzte Änderung: | 14 Dez 2023 11:36 |
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