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| 1 | Investigation of the Flow in the Impeller Side Clearances of a Centrifugal Pump with Volute Casing显示文摘The paper is concerned with the fluid flow in the impeller side clearances of a centrifugal pump with volute cas-ing.The flow conditions in these small axial gaps are of significant importance for a number of effects such as disk friction,leakage losses or hydraulic axial thrust to name but a few.In the investigated single stage pump,the flow pattern in the volute turns out to be asymmetric even at design flow rate.To gain a detailed insight into the flow structure,numerical simulations of the complete pump including the impeller side clearances are accom-plished.Additionally,the hydraulic head and the radial pressure distributions in the impeller side clearances are measured and compared with the numerical results.Two configurations of the impeller,either with or without balancing holes,are examined.Moreover,three different operating points,i.e.:design point,part load or overload conditions are considered.In addition,analytical calculations are accomplished to determine the pressure distri-butions in the impeller side clearances.If accurate boundary conditions are available,the 1D flow models used in this paper can provide reasonable results for the radial static pressure distribution in the impeller side clearances.Furthermore,a counter rotating wake region develops in the rear impeller side clearances in absence of balancing holes which severely affects the inflow and outflow conditions of the cavity in circumferential direction. | Bjrn-Christian Will Friedrich-Karl Benra Hans-Josef Dohmen | 2012 | Journal of Thermal Science2012，21，3： | 17 |
| 2 | Experimental investigation of velocity fluctuations in a radial diffuser pump显示文摘The strong interaction in a radial pump due to the relative movement between the impeller and the diffuser may excite not only strong pressure fluctuations but also velocity fluctuations. In this paper, the laser Doppler velocimetry(LDV) technique is successfully applied to measure the periodic flow field in a radial diffuser pump with low-specific speed, in order to investigate the velocity fluctuations caused by the impeller-diffuser interactions both in the impeller and diffuser regions. The velocity fluctuations in the impeller region are quantitatively examined at different radial positions, and the flow structure at the radial gap between two flow components is analyzed at different relative positions. In addition, the downstream effect on the diffuser flow is quantitatively and qualitatively assessed and compared with the turbulence effect. | 冯建军 罗兴锜 BENRA Friedrich-Karl DOHMEN Hans-Josef | 2015 | Journal of Hydrodynamics2015，27，3： | 2 |
| 3 | Unsteady ftow visualization at part-load conditions of a radial diffuser pump: By PIV and CFD显示文摘 | Feng J J Benra F K Dohmen H 1 | 2009 | Journal of Visualization2009，12，1： | 1 |
| 4 | Application of different turbulence models in unsteady flow simulations of a radial diffuser pump 显示文摘 | Feng J Benra F K Dohmen H J | 2010 | Forsch Ingenieurwes2010，74，： | 1 |
| 5 | Unsteady flow investigation in rotor-stator interface of a radial diffuser pump 显示文摘 | Feng J Benra F K Dohmen H J | 2010 | Forsch Ingenieurwes2010，74，： | 1 |
| 6 | Investigation of periodically unsteady flow in a radial pump by CFD simulations and LDV measurements显示文摘 | Feng J Benra F-K Dohmen H J | | 0，，01： | 1 |
| 7 | Unsteady flow visualization at part-load conditions of a radial diffuser pump:by PIV and CFD显示文摘 | Feng J Benra F-K Dohmen H J | | 0，，01： | 1 |
| 8 | Qualitative comparison of unsteady flow between numerical and experimental results in a radial diffuser pump显示文摘 | Feng J Benra F-K Dohmen H J | | 0，，04： | 1 |
| 9 | Investigations on turbulence and blade orientation effects in a radial diffuser pump by laser doppler velocimetry显示文摘 | Feng J Benra F-K Dohmen H J | | 0，，： | 1 |
| 10 | Numerical investigation on pressure fluctuations for different configurations of vaned diffuser pumps显示文摘 | Feng J Benra F-K Dohmen H J | | 0，，： | 1 |
| 11 | Numerical and experimental investigation on the flow induced oscillations of a single-blade pump impeller显示文摘 | Benra F K | 2006 | ASME Journal of Fluids Engineering2006，128，4： | 1 |
| 12 | Numerical prediction of unsteady pressure field within the whole flow passage of a radial single-blade pump显示文摘 | Pei J Yuan S Benra F K | 2012 | Journal of Fluids Engineering2012，134，10： | 1 |
| 13 | Unsteady flow visualization at part-load conditions of a radial diffuser pump: by PIV and CFD显示文摘 | Feng J Benra F K Dohmen H J | 2009 | Journal of Visualization2009，12，1： | 1 |
| 14 | Numerical investigation on pressure fluctuations for different configurations of vaned diffuser pumps 显示文摘 | Feng J Benra F K Dohmen H J | 2007 | International Journal of Rotating Machinery2007，13，1： | 1 |
| 15 | Unsteady flow investigation in rotor-stator interface of a radial diffuser pump 显示文摘 | Jianjun Feng Benra F K Dohmen H J | 2010 | Forsch Ingenieurwes2010，，74： | 1 |
| 16 | Unsteady flow visualization at part-load conditions of a radial diffuser pump: By PIV and CFD 显示文摘 | Feng J Benra F K Dohmen H J | 2009 | Journal of Visualization2009，12，1： | 1 |
| 17 | Investigation of periodically Unsteady Flow in a Radial Pump by CFD Simulations and LDV Measure- ments 显示文摘 | Jianjun Feng Friedrich-Karl Benra Hans Josef Dohm- en | 2011 | Journal of Turbomachinery2011，133，1： | 1 |
| 18 | Investigation of Period- ically Unsteady Flow in a Radial Pump by CFD Sim- ulations and LDV Measurements 显示文摘 | Feng J Benra F-K Dohmen H | 2011 | ASME Journal of :klrbomachinery2011，133，01： | 1 |
| 19 | Numer- ical Predication of Unsteady Pressure Field Within the Whole Flow Passage of a Radial Single-Blade Pump 显示文摘 | Ji Pei Shouqi Yuan Friedrich-Karl Benra | 2012 | Journal of Fluids Engineering2012，134，10： | 1 |
| 20 | Numerical prediction of un- steady pressure field within the whole flow passage of a radial single- blade pump 显示文摘 | Pei Ji Yuan Shouqi Benra F-K | | ASME Journal of Fluids Engineering0，2012，： | 1 |
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