The influence of chamfering and corner radiusing on the discharge coefficient of rotating axial orifices

Mohd Azree Idris, K. Pullen

Research output: Contribution to journalConference article

Abstract

The effects of chamfering and corner radiusing on the discharge coefficient of rotating axial orifices are presented in this paper. Both experimental and CFD results show that chamfering and corner radiusing improve the discharge coefficient of rotating orifices. For non-inclined rotating orifices, the discharge coefficient reduces with increasing speed, but chamfered and radiused orifices manage to have higher discharge coefficient (Cd) than the straight edge orifices. Comparing between chamfering and corner radiusing, the radiused corner orifice has the highest Cd at every rotational speed. This is because the inlet radius helps guiding the flow into the orifice and avoiding flow separation at the inlet.

Original languageEnglish
Article number012110
JournalIOP Conference Series: Earth and Environmental Science
Volume16
Issue number1
DOIs
Publication statusPublished - 01 Jan 2013
Event26th IAHR Symposium on Hydraulic Machinery and Systems - Beijing, China
Duration: 19 Aug 201223 Aug 2012

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All Science Journal Classification (ASJC) codes

  • Environmental Science(all)
  • Earth and Planetary Sciences(all)

Cite this

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abstract = "The effects of chamfering and corner radiusing on the discharge coefficient of rotating axial orifices are presented in this paper. Both experimental and CFD results show that chamfering and corner radiusing improve the discharge coefficient of rotating orifices. For non-inclined rotating orifices, the discharge coefficient reduces with increasing speed, but chamfered and radiused orifices manage to have higher discharge coefficient (Cd) than the straight edge orifices. Comparing between chamfering and corner radiusing, the radiused corner orifice has the highest Cd at every rotational speed. This is because the inlet radius helps guiding the flow into the orifice and avoiding flow separation at the inlet.",
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The influence of chamfering and corner radiusing on the discharge coefficient of rotating axial orifices. / Idris, Mohd Azree; Pullen, K.

In: IOP Conference Series: Earth and Environmental Science, Vol. 16, No. 1, 012110, 01.01.2013.

Research output: Contribution to journalConference article

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T1 - The influence of chamfering and corner radiusing on the discharge coefficient of rotating axial orifices

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AB - The effects of chamfering and corner radiusing on the discharge coefficient of rotating axial orifices are presented in this paper. Both experimental and CFD results show that chamfering and corner radiusing improve the discharge coefficient of rotating orifices. For non-inclined rotating orifices, the discharge coefficient reduces with increasing speed, but chamfered and radiused orifices manage to have higher discharge coefficient (Cd) than the straight edge orifices. Comparing between chamfering and corner radiusing, the radiused corner orifice has the highest Cd at every rotational speed. This is because the inlet radius helps guiding the flow into the orifice and avoiding flow separation at the inlet.

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