NDLI: Study on improvement of hump characteristic of an axial flow axial pump by grooving inlet wall

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Study on improvement of hump characteristic of an axial flow axial pump by grooving inlet wall

Content Provider	Scilit
Author	Yang, K. F. Feng, J. J. Zhu, G. J. Lu, J. L. Luo, X. Q.
Copyright Year	2018
Description	Journal: Iop Conference Series: Earth and Environmental Science When operating at part load conditions, flow separations may occur in the impeller of an axial flow pump due to the increase of the incidence angle at the impeller leading edge, probably resulting in instability in head curve. In this paper, the hump characteristic in head curve of an axial flow pump has been examined by CFD method with the help of ANSYS CFX 16.0. The results show that the head of the axial flow pump in the hump area decreased by 40% at 61% of the design flow rate, caused by stalls in the pump impeller. Furthermore, the improvement of head curve has been conducted by applying axial grooves at the wall of the pump inlet section. It is found that under the condition of small flow rates, the axial groove can effectively reduce the inlet circulation and the attack angle at the leading edge of the impeller. As a result, the back flow on the suction side of the impeller has been reduced. Consequently, the hump phenomenon in the head curve of the axial flow pump has been effectively eliminated.
Related Links	http://iopscience.iop.org/article/10.1088/1755-1315/163/1/012090/pdf
ISSN	17551307
e-ISSN	17551315
DOI	10.1088/1755-1315/163/1/012090
Journal	Iop Conference Series: Earth and Environmental Science
Issue Number	1
Volume Number	163
Language	English
Publisher	IOP Publishing
Publisher Date	2018-07-30
Access Restriction	Open
Subject Keyword	Journal: Iop Conference Series: Earth and Environmental Science Automotive Engineering Axial Flow Pump
Content Type	Text
Resource Type	Article
Subject	Earth and Planetary Sciences Physics and Astronomy Environmental Science

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