Calculation of pressure fluctuation within volute of hydraulic turbine under different guide vane numbers

doi:10.13224/j.cnki.jasp.2015.05.026

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	Calculation of pressure fluctuation within volute of hydraulic turbine under different guide vane numbers
	Shi, Guang-Tai; Yang, Jun-Hu; Miao, Sen-Chun; Li, Tai-Long
刊名	Hangkong Dongli Xuebao/Journal of Aerospace Power
	2015-05-01
卷号	30 期号:5 页码:1228-1235
关键词	Centrifugal pumps Computational fluid dynamics Fast Fourier transforms Frequency domain analysis Hydraulic turbines Vibration analysis Distribution of frequency Dominant frequency Fluctuation amplitudes Guide vane Pressure fluctuation Vibration Vibration phenomena Volute
ISSN号	10008055
DOI	10.13224/j.cnki.jasp.2015.05.026
英文摘要	Vibration phenomenon exists when centrifugal pump is operated as hydraulic turbine. In order to make hydraulic turbine operate stably, the volute outlet of hydraulic turbine was designed with different guide vane numbers; then, the geometric models were established using Pro/e software under different guide vane numbers; the monitoring points were set using ANSYS-CFD software along circumferential and radial directions of volute, and amplitudes of pressure fluctuation within volute of hydraulic turbine were calculated under different guide vane numbers; afterwards, the calculational results of pressure fluctuation were transformed by fast Fourier transform, and the distribution of frequency domain of pressure fluctuation in volute and vibration in hydraulic turbine were analyzed under different guide vane numbers. Investigation results show that the dominant frequency amplitude of pressure fluctuation is minimal along circumferential and radial directions of volute when the guide vane number is equal to 9. With the increase of flow rate, dominant frequency amplitude and maximum fluctuation amplitude of pressure fluctuation of monitorin points of valute along radial direction gradually increase, but the degree of increase gradually decreases with the increase of guide vane numbers. When the volute outlet of hydraulic turbine is designed with a set of guide vanes that the guide vane number is equal to 9, the vibration and noise within hydraulic turbine are effectively reduced, and the stability of hydraulic turbine is enhanced. ©, 2015, BUAA Press. All right reserved.
语种	中文
出版者	BUAA Press
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/112478]
专题	新能源学院能源与动力工程学院
作者单位	School of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Shi, Guang-Tai,Yang, Jun-Hu,Miao, Sen-Chun,et al. Calculation of pressure fluctuation within volute of hydraulic turbine under different guide vane numbers[J]. Hangkong Dongli Xuebao/Journal of Aerospace Power,2015,30(5):1228-1235.
APA	Shi, Guang-Tai,Yang, Jun-Hu,Miao, Sen-Chun,&Li, Tai-Long.(2015).Calculation of pressure fluctuation within volute of hydraulic turbine under different guide vane numbers.Hangkong Dongli Xuebao/Journal of Aerospace Power,30(5),1228-1235.
MLA	Shi, Guang-Tai,et al."Calculation of pressure fluctuation within volute of hydraulic turbine under different guide vane numbers".Hangkong Dongli Xuebao/Journal of Aerospace Power 30.5(2015):1228-1235.