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DNS and scaling laws of a turbulent channel flow with streamwise rotation

Weller, Tanja ; Oberlack, Martin (2007)
DNS and scaling laws of a turbulent channel flow with streamwise rotation.
iTi Conference in Turbulence 2005. Bad Zwischenahn (25.09.2005-28.09.2005)
Konferenzveröffentlichung, Bibliographie

Kurzbeschreibung (Abstract)

Rotating turbulent flows play more a major role in engineering applications such as in gas turbine blade passages, pumps and rotating heat exchangers to name only a few. In these cases secondary flows are induced caused by centrifugal or Coriolis forces. Investigations of [4] using symmetry theory showed that there is a new turbulent scaling law related to the turbulent channel flow rotating about the mean flow direction. Figure 1 depicts the flow geometry. The flow has several common features with the classical rotating channel flow rotating about the spanwise direction [2] but also has some different characteristics. The induction of a mean velocity in x3-direction [5] is the most obvious difference compared to the classical case. In this paper the results of a Lie group analysis and a corresponding DNS at Reynolds number Re=180 for different rotation rates are presented and discussed. The main objective of the present paper is to validate the results from the Lie group analysis.

Typ des Eintrags: Konferenzveröffentlichung
Erschienen: 2007
Autor(en): Weller, Tanja ; Oberlack, Martin
Art des Eintrags: Bibliographie
Titel: DNS and scaling laws of a turbulent channel flow with streamwise rotation
Sprache: Englisch
Publikationsjahr: 2007
Ort: Berlin
Verlag: Springer
Buchtitel: Progress in turbulence II : proceedings of the ITi Conference in Turbulence 2005 ; with 5 tables
Reihe: Springer proceedings in physics
Band einer Reihe: 109
Veranstaltungstitel: iTi Conference in Turbulence 2005
Veranstaltungsort: Bad Zwischenahn
Veranstaltungsdatum: 25.09.2005-28.09.2005
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Kurzbeschreibung (Abstract):

Rotating turbulent flows play more a major role in engineering applications such as in gas turbine blade passages, pumps and rotating heat exchangers to name only a few. In these cases secondary flows are induced caused by centrifugal or Coriolis forces. Investigations of [4] using symmetry theory showed that there is a new turbulent scaling law related to the turbulent channel flow rotating about the mean flow direction. Figure 1 depicts the flow geometry. The flow has several common features with the classical rotating channel flow rotating about the spanwise direction [2] but also has some different characteristics. The induction of a mean velocity in x3-direction [5] is the most obvious difference compared to the classical case. In this paper the results of a Lie group analysis and a corresponding DNS at Reynolds number Re=180 for different rotation rates are presented and discussed. The main objective of the present paper is to validate the results from the Lie group analysis.

Fachbereich(e)/-gebiet(e): 16 Fachbereich Maschinenbau
16 Fachbereich Maschinenbau > Fachgebiet für Strömungsdynamik (fdy)
Hinterlegungsdatum: 20 Nov 2008 08:26
Letzte Änderung: 15 Nov 2024 07:55
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