Flow Resistance of Curved Pipes with Rough Surfaces

Flow Resistance of Curved Pipes with Rough Surfaces

Friction coefficients have been measured for turbulent flows through curved circular pipes with rough surfaces. An experiment has been carried out under the conditions of equivalent relative roughness ke/d=3.59×10-3∼3.25×10-2, Reynolds number Re < 7×104 and curvature radius ratios Rc=15, 30 and 4...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Nihon Kikai Gakkai rombunshuu. B hen 1990/01/25, Vol.56(521), pp.29-34
Hauptverfasser: SUDOU, Kouzou, TAKAMI, Toshihiro
Format: Artikel
Sprache:jpn
Schlagworte:
boundary layers
Friction Coefficient
pipes
surface roughness
turbulent flow
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:Friction coefficients have been measured for turbulent flows through curved circular pipes with rough surfaces. An experiment has been carried out under the conditions of equivalent relative roughness ke/d=3.59×10-3∼3.25×10-2, Reynolds number Re < 7×104 and curvature radius ratios Rc=15, 30 and 45. An approximate expression, which expresses the experimental results well, has been derived using the boundary layer approximation.
ISSN:0387-5016
1884-8346
DOI:10.1299/kikaib.56.29