Leakage Flow Influence on SHF pump model performances

Dupont, Patrick; Bayeul-Laine, Annie-Claude; Dazin, Antoine; Bois, Gerard; Roussette, Olivier; Si, Qiaorui

doi:http://dx.doi.org/10.5293/IJFMS.2015.8.4.274

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자료유형: 학술저널

저자정보: Dupont, Patrick Bayeul-Laine, Annie-Claude Dazin, Antoine Bois, Gerard Roussette, Olivier Si, Qiaorui

저널정보: 한국유체기계학회 International Journal of Fluid Machinery and Systems International Journal of Fluid Machinery and Systems Vol.8 No.4

발행연도: 2015.12

수록면: 274 - 282 (9page)

DOI: http://dx.doi.org/10.5293/IJFMS.2015.8.4.274

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This paper deals with the influence of leakage flow existing in SHF pump model on the analysis of internal flow behaviour inside the vane diffuser of the pump model performance using both experiments and calculations. PIV measurements have been performed at different hub to shroud planes inside one diffuser channel passage for a given speed of rotation and various flow rates. For each operating condition, the PIV measurements have been trigged with different angular impeller positions. The performances and the static pressure rise of the diffuser were also measured using a three-hole probe. The numerical simulations were carried out with Star CCM+ 9.06 code (RANS frozen and unsteady calculations). Some results were already presented at the XXth IAHR Symposium for three flowrates for RANS frozen and URANS calculations. In the present paper, comparisons between URANS calculations with and without leakages and experimental results are presented and discussed for these flow rates. The performances of the diffuser obtained by numerical calculations are compared to those obtained by the three-holes probe measurements. The comparisons show the influence of fluid leakages on global performances and a real improvement concerning the efficiency of the diffuser, the pump and the velocity distributions. These results show that leakage is an important parameter that has to be taken into account in order to make improved comparisons between numerical approaches and experiments in such a specific model set up.

#numerical calculations #performances #pump #vaned diffuser #radial flow pump #unsteady flow

참고문헌 (19)

참고문헌 신청

[학술대회논문] - Wuibaut G. / 2000 / Experimental analysis of velocities in the outlet part of a radial flow pump impeller and the vanelessdiffuser using particle image velocimetry / Proceedings of the XX IAHR Symposium

[학위논문] - Wuibaut G. / 2001 / Etude par vélocimétrie par images de particules des interactions roue-diffuseur dans une pompe centrifuge / PhD / Ensam

[학위논문] - Cavazzini G. / 2006 / Experimental and numerical investigation of the rotor-stator interaction in radial turbomachines / Ph.D. / University of Padova

[학술지(정기간행물)] - Cavazzini G. / 2009 / Analysis of the rotor-stator interaction in a radial flow pump / Houille blanche –Revue internationale de l’eau : 141 ~ 151

[학술대회논문] - Cavazzini G. / 2011 / Analysis of unsteady flow velocity fields inside the impeller of a radial flow pump : PIV measurements and numerical calculation comparisons / Proc. of ASME-JSME-HSME Joint fluids engineering conference

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