Impact of the Volute Basic Circle Diameter of Sewage Pump on Pressure Pulsation

• Autorzy: Li W. , Shi W. , Jiang X. , Jiang T. , Chen B.

Warianty tytułu

PL

Pulsacje ciśnienia w pompie kanalizacyjnej – wpływ średnicy śruby napędowej

• Języki publikacji: EN

Abstrakty

EN

The unsteady flow field in the channel sewage pump with three different basic circle diameters of volutes were numerically simulated based on the Fluent commercial software, using the standard k-ε turbulence model, the SIMPLE algorithm, and the sliding mesh technique. By setting pressure measurement points, the pressure pulsation in different positions can be obtained. The impact of the basic circle diameter of volute on the internal pressure pulsation characteristics of a sewage pump was analyzed based on frequency domain and time domain graphs. The results show that the smaller the basic circle diameter of volute is, the more turbulent the pressure pulsation is. The Coefficient of pressure pulsation amplitude reaches the maximum value with small gaps in the volute and impeller clearance. The closer the monitoring point to the cutwater, the greater the amplitude of pressure pulsation. In a flow channel of volute, the pressure fluctuation presents cyclical changes, and a small gap flow reaches the strongest unsteady characteristics. Pressure pulsation cycle is associated with the number of impeller blades and a period of three peaks is the blade passing frequency. The dominant frequency of pressure pulsation is 73.5Hz, which is the threefold frequency of rotation frequency.

PL

W artykule przedstawiono wyniki i opis symulacji przepływu w pompie kanalizacyjnej z trzema różnymi średnicami sprężyn napędowych. W badaniach wykorzystano oprogramowanie Fluent, jeden ze standardowych modeli turbulencji (k-epsilon), algorytm SIMPLE oraz technikę siatki przesuwnej. W analizie skupiono się na przypadku wystąpienia zakłóceń przepływu w kanale. Dokonano analizy wyników i przedstawiono wnioski.

Słowa kluczowe

EN

sewage pump; volute; basic circle diameter; unsteady flow; pressure pulsation

PL

pompa kanalizacyjna; średnica koła bazowego; przepływ niestabilny; pulsacje ciśnienia

• Wydawca: Wydawnictwo SIGMA-NOT
• Czasopismo: Przegląd Elektrotechniczny
• Rocznik: 2013
• Tom: R. 89, nr 3b
• Strony: 232--235
• Opis fizyczny: Bibliogr. 11 poz., il., schem., wykr.

Twórcy

autor

Li W.

• Research Center of Fluid Machinery Engineering and technology, Jiangsu University, Zhenjiang 212013, P. R. China

autor

Shi W.

• Research Center of Fluid Machinery Engineering and technology, Jiangsu University, Zhenjiang 212013, P. R. China

autor

Jiang X.

• Research Center of Fluid Machinery Engineering and technology, Jiangsu University, Zhenjiang 212013, P. R. China

autor

Jiang T.

• Research Center of Fluid Machinery Engineering and technology, Jiangsu University, Zhenjiang 212013, P. R. China

autor

Chen B.

• Research Center of Fluid Machinery Engineering and technology, Jiangsu University, Zhenjiang 212013, P. R. China

Bibliografia

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• [3] Guo Pengcheng, Luo Xingqi, Liu Shengzhu., Numerical simulation of 3D turbulent flow fields through a centrifugal pump including impeller and volute casing. Transactions of The Chinese Society of Agricultural Engineering, 2005, 21(8), 1-5.
• [4] Young- Do Choi, Junichi Kurokawa, Jun Matsui., Performance and internal flow characteristics of a very low specific speed centrifugal pump. Journal of Fluids Engineering , 2006,128: 341-349.
• [5] Longatte F, Kueny J L., Analysis of rotor-stator-circuit interactions in a centrifugal pump. Proceedings of the 3rd ASME/JSME Joint Fluids Engineering Conference, 2009:1039-1045.
• [6] Barrio R, Parrondo J, Blanco E., Numerical analysis of the unsteady flow in the near-tongue region in a volute-type centrifugal pump for different operating points. Computers & Fluids, 2010, 39: 859-870.
• [7] Brennen C E, Acosta A J., Fluid-induced rotordynamic forces and instabilities. Structural Control and Health Monitoring, 2006, 13(1), 10-26.
• [8] Jose Gonzalez, Carlos Santolaria., Unsteady flow structure and global variables in a centrifugal pump. ASME, J. of Fluid Eng, 2006, 128, 937-946.
• [9] José González, Joaqun Fernández, Eduardo Blanco., Numerical Simulation of the Dynamic Effects Due to Impeller- Volute Interaction in a Centrifugal Pump. Transactions of the ASME, 2002, 124( 7) : 348-354.
• [10]Karassik IJ., Pump Handbook. McGraw-HILL BOOK COMPANY, 1976.
• [11]Kitano Majidi., Numerical study of unsteady flow in a centrifugal pump. ASME Journal of Turbomachinery, 2005, 127( 2) : 363-371.