performance improvement of an axialflow pump with inlet
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Performance improvement of an axial-flow pump with inlet ...

Jun 26, 2019  Performance improvement of an axial-flow pump with inlet guide vanes in the turbine mode Zilong Zhao, Zhiwei Guo, Zhongdong Qian, and Qian Cheng Proceedings of the

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Performance improvement of an axial-flow pump with inlet ...

Performance improvement of an axial-flow pump with inlet guide vanes in the turbine mode June 2019 Proceedings of the Institution of Mechanical Engineers Part A

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Study on the Performance Improvement of Axial Flow Pump’s ...

The operating range of axial flow pumps is often constrained by the onset of rotating stall. An improved method using a double inlet nozzle to stabilize the

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Study on the Performance Improvement of Axial Flow Pump’s ...

May 23, 2020  Study on the Performance Improvement of Axial Flow Pump’s Saddle Zone by Using a Double Inlet Nozzle Weidong Cao 1,2,* and Wei Li 1,2 1 Research Institute of

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Study on the Performance Improvement of Axial Flow Pump’s ...

In order to test the improvement effects of double inlet nozzle scheme on the saddle-shape performance of another axial flow pump, an axial flow pump with

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Computational study on the performance improvement of ...

Download Citation Computational study on the performance improvement of axial-flow pump by inlet guide vanes at part loads In order to investigate the

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Study on the Performance Improvement of Axial Flow Pump’s ...

The operating range of axial flow pumps is often constrained by the onset of rotating stall. An improved method using a double inlet nozzle to stabilize the performance curve is presented in the current study; a single inlet nozzle and three kinds of double inlet nozzle with different rib gap widths at the inlet of axial flow pump impeller were designed.

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Study on the Performance Improvement of Axial Flow Pump’s ...

In order to test the improvement effects of double inlet nozzle scheme on the saddle-shape performance of another axial flow pump, an axial flow pump with specific speed of n s = 700 m 0.75 /s 1.5 was numerically simulated; the design flow rate Q opt was 700 m 3 /h, head H opt was 2.5 m, and rotating speed was 980 r/min. The structure of the ...

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AND OVERALL PERFORMANCE A TWO-STAGE AXIAL-FLOW

DESIGN AND OVERALL PERFORMANCE OF A TWO-STAGE AXIAL-FLOW PUMP WITH A TANDEM-ROW INLET STAGE by Donald M. Sandercock and James E. Crouse Lewis Research Center SUMMARY The inlet stage group for a high suction specific speed, multistage axial-flow pump was designed and tested in water. Inlet flow vector diagrams were optimized for suction

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Computational study on the performance improvement of ...

Download Citation Computational study on the performance improvement of axial-flow pump by inlet guide vanes at part loads In order to investigate the influence of adjustable inlet guide vanes ...

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Simulation of cavitation performance of an axial flow pump ...

The cavitation performance of an axial flow pump with inlet guide vanes for different flow rates is studied in this article. The effects of inlet guide vanes on pump hydraulic performance and cavitation are investigated, where the total vapor fraction of impeller zone (Ftv) is calculated to predict the critical net positive suction head, which is compared with that predicted by efficiency ...

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Improvement of the Efficiency of the Axial-Flow Pump at ...

Feb 04, 2016  Abstract. In order to investigate the influence of adjustable outlet guide vane on the hydraulic performance of axial-flow pump at part loads, the axial-flow pump with 7 different outlet guide vane adjustable angles was simulated based on the RNG turbulent model and Reynolds time-averaged equations. The Vector graphs of airfoil flow were analyzed in the different operating

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Simulation of cavitation performance of an axial flow pump ...

Jun 02, 2016  The cavitation performance of an axial flow pump with inlet guide vanes for different flow rates is studied in this article. The effects of inlet guide vanes on pump hydraulic performance and cavitation are investigated, where the total vapor fraction of impeller zone (F tv) is calculated to predict the critical net positive suction head, which is compared with that predicted by efficiency ...

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Study on improvement of hydraulic performance and internal ...

Nov 01, 2020  1. Introduction. Axial flow pumps are widely utilized for transporting fluid in flood control and drainage, irrigation, large-scale water diversion, ship-jet propulsion and many other fields [, , ].When the axial flow pump operates under the off-design conditions, especially the low flow conditions, the flow pattern will be severely unstable, and it even cause strong vibration of the whole unit.

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Study on the Performance Improvement of Axial Flow

Study on the Performance Improvement of Axial Flow Pump’s Saddle Zone by Using a Double Inlet Nozzle ... different rib gap widths at the inlet of axial flow pump impeller were designed ...

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Improvement of Axial-Flow Pump Part Load Behavior by a ...

Jul 24, 2013  Dohmen, HJ, Benra, F, Brinkhorst, S. "Improvement of Axial-Flow Pump Part Load Behavior by a Double Inlet Nozzle." Proceedings of the ASME 2012 Fluids Engineering Division Summer Meeting collocated with the ASME 2012 Heat Transfer Summer Conference and the ASME 2012 10th International Conference on Nanochannels, Microchannels, and Minichannels.

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Effects of an Inlet Vortex on the Performance of an Axial ...

The formation of an inlet vortex seriously restricts axial-flow pump device performance and poses a great threat to the safe and stable operation of the entire system. In this study, the change trends of an inlet vortex and its influence on an axial-flow pump are investigated numerically and experimentally in a vertical axial-flow pump device.

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Numerical investigation of the grooves effect on the inlet ...

Jan 07, 2021  performance of axial-flow pump and the flow c haracteristics of impeller inlet was studied. (1) Setting proper grooves on the pump inlet pipe can effectively improve the hydraulic

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Suppression of Performance Curve Instability of an Axial ...

Sep 02, 2008  3. Experimental Setup 3.1. Test Rig and Test Pump. The test pump is a scaled-down model of the axial-flow pump used by Goltz [2, 3] with a specific speed of and a casing diameter of .This pump was also already used by Goltz [].However, unlike the former horizontal installed pump, the pump is now installed vertically and takes in water from an open intake chamber (Figure 4).

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Influence of Inlet Angle of Guide Vane on Hydraulic ...

Dec 19, 2020  Axial flow pump has been widely used in hydraulic engineering, agriculture engineering, water supply and sewerage works, and shipbuilding industry. In order to improve the hydraulic performance of pump under off-design working conditions, the influence of the inlet segment axial chord and inlet angle adjustment of the guide vane on the pump segment efficiency and flow filed was

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Simulation of cavitation performance of an axial flow pump ...

The cavitation performance of an axial flow pump with inlet guide vanes for different flow rates is studied in this article. The effects of inlet guide vanes on pump hydraulic performance and cavitation are investigated, where the total vapor fraction of impeller zone (Ftv) is calculated to predict the critical net positive suction head, which is compared with that predicted by efficiency ...

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Improvement of Axial-Flow Pump Part Load Behavior by a ...

Jul 24, 2013  Dohmen, HJ, Benra, F, Brinkhorst, S. "Improvement of Axial-Flow Pump Part Load Behavior by a Double Inlet Nozzle." Proceedings of the ASME 2012 Fluids Engineering Division Summer Meeting collocated with the ASME 2012 Heat Transfer Summer Conference and the ASME 2012 10th International Conference on Nanochannels, Microchannels, and Minichannels.

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Analysis of inlet flow passage conditions and their ...

Performance improvement of an axial-flow pump with inlet guide vanes in the turbine mode ... of elbow inlet passages on the hydraulic characteristics of axial-flow pumps and achieve performance ...

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Effects of an Inlet Vortex on the Performance of an Axial ...

The formation of an inlet vortex seriously restricts axial-flow pump device performance and poses a great threat to the safe and stable operation of the entire system. In this study, the change trends of an inlet vortex and its influence on an axial-flow pump are investigated numerically and experimentally in a vertical axial-flow pump device.

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Research Article Improvement of the Efficiency of the ...

Improvement of the Efficiency of the Axial-Flow Pump at Part Loads due to Installing Outlet Guide Vanes Mechanism ... pump, (2) inlet water tank, (3) outlet water tank, (4) surge water ... of OGV and hydraulic performance of pump, and the rotor-

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Numerical investigation of the grooves effect on the inlet ...

Jan 07, 2021  performance of axial-flow pump and the flow c haracteristics of impeller inlet was studied. (1) Setting proper grooves on the pump inlet pipe can effectively improve the hydraulic

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Residual Swirl in Axial-Flow Pump

inlet diameter 304, exit diameter 410, length 635. Figure 4 shows the stator and inlet to the diffuser. A 5-blade impeller and a 6-blade one, shown in figure 5, are used in this work. Flow rate is regulated using a throttle valve, and a feed pump is used to adjust the pressure at inlet to the pump; see figure 1.

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Impeller inlet geometry effect on performance improvement ...

This research treats the effect of impeller inlet geometry on performance improvement for a boiler feed pump, who is a centrifugal pump having specific speed of 183 mm3min−1min−1 and close type impeller with exit diameter of 450 mm. The hydraulic

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Performance of a New Stator-Diffuser Design for an Axial ...

011 overall pump performance. Stepanoff [8] claims that axial flow pumps arc very sensitive to the quality of blade finish. During performance testing, the hydraulic grade line (HGL) throughout the pump assembly was measured in order to evaluate static head rise across each pump

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Experimental investigation and improvement of the inlet ...

Mar 24, 2009  Abstract. To enhance the adjusting action and performance of the inlet guide vane (IGV) of a centrifugal fan, this study has proposed a new definition for the prerotation coefficient, and suggested that the prerotation coefficient and the resistance coefficient be used as the main indexes for assessing the IGV performance.

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[PDF] Suppression of Performance Curve Instability of an ...

It has been shown that the sudden decrease of pump head in an axial flow pump caused by stall can be overcome by means of casing treatment. Flat axial grooves in front of the impeller break the swirl of the near-casing backflow. The disadvantage of this method is strong cavitation at the inlet of the grooves for flow rates below the stall point. In this paper another improved method to ...

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Suppression of Performance Curve Instability of an Axial ...

Sep 02, 2008  3. Experimental Setup 3.1. Test Rig and Test Pump. The test pump is a scaled-down model of the axial-flow pump used by Goltz [2, 3] with a specific speed of and a casing diameter of .This pump was also already used by Goltz [].However, unlike the former horizontal installed pump, the pump is now installed vertically and takes in water from an open intake chamber (Figure 4).

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Study on improvement of hydraulic performance and internal ...

The present work proposed a new groove flow control technology for the axial flow pump and studied its improvement effect and mechanism under stall conditions by numerical simulation. Results show that the groove flow control technology can significantly improve the hydraulic performance of the axial flow pump under stall conditions, with the ...

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Interactional Effects of Inlet Guide Vane and Blade Angle ...

Oct 24, 2018  This study aims to evaluate effects of blade pitch and inlet guide vane (IGV) angle on the performance characteristics of a submersible axial-flow pump. According to the results of the previous study, the efficiency at the design and over-load conditions were significantly affected by the angle of IGV due to change in the incidence angle.

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