SHAPE EFFECTS ON RESISTANCE TO FLOW IN SMOOTH SEMI- CIRCULAR CHANNELS

Some new experiments in smooth semi-circular channels are described and a set of accurate data about the resistance to flow is presented. At the same Reynolds numbers, the observed friction factors in the smooth semi-circular channel are not only larger than those in smooth pipes but also larger than those in smooth rectangular channels. The results of these experiments were used to study the effects of channel shape on flow resistance and they established the effectiveness of the previously published kazemipour's method for the case of semi-circular channels. For convenience of application, an independent shape parameter curve was developed for semi-circular channels. However, it is shown that the shape parameter curve for semi-circular channels is transferable on to the shape parameter curve for rectangular channels by two linear, parallel shifts (A). (TRRL)

• Corporate Authors:

  University of Queensland

  Department of Civil Engineering
  Brisbane, Queensland  Australia  4072
• Authors:
  • Kazemipour, A K
  • APELT, C J
• Publication Date: 1980-11

Media Info

• Features: Figures; Photos; References;
• Pagination: 26 p.

Subject/Index Terms

• TRT Terms: Design; Flow; Flow resistance; Fluid dynamics; Friction; Friction factor; Gutters; Mathematical models; Pipe; Reynolds number; Shape; Smoothness
• Old TRIS Terms: Channels; Shape factor
• ITRD Terms: 9011: Design (overall design); 5430: Flow (fluid); 5452: Friction; 2949: Gutter; 6473: Mathematical model; 3361: Pipe; 9073: Shape
• Subject Areas: Design; Highways; Hydraulics and Hydrology; I26: Water Run-off - Freeze-thaw;

Filing Info

• Accession Number: 00335771
• Record Type: Publication
• Source Agency: ARRB
• Report/Paper Numbers: CE 18 Monograph
• Files: ITRD, TRIS
• Created Date: Dec 22 1981 12:00AM