An advanced CFD model to study the effect of non-condensable gas on cavitation in positive displacement pumps

• Autorzy: Iannetti A. , Stickland M. T. , Dempster W. M.
• Konferencja: International Symposium on Compressor & Turbine Flow Systems Theory & Application Areas "SYMKOM" (11 ; 20-23.10.2014 ; Łódź, Polska)
• Języki publikacji: EN

Abstrakty

EN

An advanced transient CFD model of a positive displacement reciprocating pump was created to study its behavior and performance in cavitating conditions throughout the inlet stroke. The “full” cavitation model developed by Singhal et al. was utilized and a sensitivity analysis test on two amounts (1.5 and 15 parts per million) air mass fraction content was carried out to study the influence of the air content in water on the cavitation phenomenon. The model was equipped with user defined functions to introduce the liquid compressibility which stabilizes the simulation and to handle the two-way coupling between the pressure field and the inlet valve lift history. Estimation of the pump performance is also presented in both cases.

Słowa kluczowe

EN

cavitation; PD pumps; non-condensable gas effect; CFD

PL

kawitacja; pompa; ciśnienie; doświadczenie

• Wydawca: Wydawnictwo Politechniki Łódzkiej
• Czasopismo: Zeszyty Naukowe. Cieplne Maszyny Przepływowe - Turbomachinery / Politechnika Łódzka
• Rocznik: 2014
• Tom: nr 145
• Strony: 53--54
• Opis fizyczny: Bibliogr. 12 poz.

Twórcy

autor

Iannetti A.

• University of Strathclyde Scotland, United Kingdom 16 Richmond Street, Glasgow G1 1XQ

autor

Stickland M. T.

• University of Strathclyde Scotland, United Kingdom 16 Richmond Street, Glasgow G1 1XQ

autor

Dempster W. M.

• University of Strathclyde Scotland, United Kingdom 16 Richmond Street, Glasgow G1 1XQ

Bibliografia

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• [2] Budris A.R. and Mayleben P.A.: Effects of entrained air, NPSH margin, and suction piping on cavitation in centrifugal pumps, in Proceeding of the 15th international pump users symposium, 1998, pp. 99-108.
• [3] Miller J.E.: The reciprocating pump, theory design and use, Second Edi. Krieger publishing company, 1995, pp. 1-467.
• [4] Opitz K. and Schlücker E.: Detection of Cavitation Phenomena in Reciprocating Pumps using a High-Speed Camera, Chem. Eng. Technol., Vol. 33, No. 10, pp. 1610-1614, Jul. 2010.
• [5] Opitz K., Schlücker E. and Schade O.: Cavitation in reciprocating positive displacement pumps, in Twenty-seventh international pump users symposium, 2011, pp. 27-33.
• [6] Iannetti A., Stickland M., and Dempster W.: A CFD study on the mechanisms which cause cavitation in positive displacement reciprocating pumps, Proc. Inst. Mech. Eng. Part A J. power energy, Vol. In Press, 2014.
• [7] Kuiper G.: Cavitation in ship propulsion. Delft: Delft University of Technology, 2010.
• [8] Eisenberg P.: Cavitation Damage. Office of Naval Research, 1963, p. 220.
• [9] Iannetti A., Stickland M.T. and Dempster W.M.: A computational fluid dynamics model to evaluate the inlet stroke performance of a positive displacement reciprocating plunger pump, Proc. Inst. Mech. Eng. Part A J. Power Energy, Vol. 228, No. 5, pp. 574-584, Apr. 2014.
• [10] ANSYS, ANSYS Fluent Theory Guide, Vol. 15317, No. November. ANSYS Fluent, 2011.
• [11] Singhal A.K., Athavale M.M., Li H. and Jiang Y.: Mathematical Basis and Validation of the Full Cavitation Model, J. Fluids Eng., Vol. 124, No. 3, p. 617, 2002.
• [12] ANSYS, ANSYS FLUENT User’ s Guide, Vol. 15317, No. November. ANSYS Inc., 2011.