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International Standard Serial Number:
ISSN 1001-4551
Sponsor:
Zhejiang University;
Zhejiang Machinery and Electrical Group
Edited by:
Editorial of Journal of Mechanical & Electrical Engineering
Chief Editor:
ZHAO Qun
Vice Chief Editor:
TANG ren-zhong,
LUO Xiang-yang
Tel:
86-571-87041360,87239525
Fax:
86-571-87239571
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No.9 Gaoguannong,Daxue Road,Hangzhou,China
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310009
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meem_contribute@163.com
Abstract: Aiming at the problem of blade erosion of a mining counter-rotating fan in actual operation, the SST k-ω turbulence model and the Finnie erosion model were used to numerically simulate the gas-solid two-phase flow field of the fan at different blade installation angles. Firstly, fan performance tests were carried out with fan static pressure, fan power and fan efficiency as evaluation indexes, and the accuracy of the numerical calculation methods and models was verified. Then, the erosion characteristics of the blade pressure surface and the distribution patterns of the gas-solid two-phase flow field of the fan were analyzed according to the six designed blade installation angle cases. Finally, the performance parameters of the gas-solid two-phase flow fan with different blade installation angles were compared, and the blade installation angle with the best anti-erosion effect and the optimum fan performance was determined. The results show that the average erosion rate of the blade surface is reduced by 6.0×10-8 kg/(m2·s) after increasing the rear stage blade installation angle compared to the original blade installation angle. Increasing the rear stage blade installation angle reduces the separation vortex at the leading and trailing edges of the rear stage blade, improves the fan performance, and achieves the purpose of blade anti-erosion.
Key words: mining counter-rotating fan; numerical simulation research; gas-solid two-phase flow; erosion characteristics; blade installation angle; fan performance; fan flow field
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- Chinese Core Periodicals
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- Chinese Sci-tech Core Periodicals
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- SA, INSPEC Indexed
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