Research on Pump Volute Design Method Using CFD

Yang, Sun-Sheng; Kong, Fanyu; Chen, Bin

doi:10.1155/2011/137860

Cited by 43 publications

(29 citation statements)

References 4 publications

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“…The fluid selected was ideal water at 25 ∘ C. All the wall surface roughness within the control volume was set to 50 m. Standard wall function was used for the boundary layer treatment. The boundary conditions were set to inlet, static pressure, and outlet, mass flow outlet [21,22]. By changing the mass flow rate, performance curves of the PAT were acquired.…”

Section: Solutionmentioning

confidence: 99%

“…Yang et al analyzed the flow field [8] within PAT and investigated effects of splitter blades [9] and blade wrap angle [10] on the performance influence of PAT. Yang et al [11] sought to find out a high efficiency PAT's volute design method through numerical research into volute main geometric parameters influencing PAT. Derakhshan et al [12,13] used a gradient-based optimization algorithm to optimize PAT's blade profiles.…”

Section: Introductionmentioning

confidence: 99%

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Research on Blade Thickness Influencing Pump as Turbine

Yang

Wang

Chen

et al. 2014

Advances in Mechanical Engineering

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Research on the efficiency improvement of pump as turbine (PAT) is inadequate. Blade thickness is an important geometry parameter in blade design. To explore effects of blade thickness on the influence of PAT, numerical research on three different specific speeds of PATs with different blade thickness was carried out. Their performance changes with blade thickness were presented. Besides, the variations of hydraulic loss distribution with increasing blade thickness were performed. Theoretical analysis gives a reasonable explanation for the performance change. Results show that PAT's flow versus efficiency curve ( -) is lowered; flow versus head ( -) curve and flow versus power ( -) curve are increased with increasing blade thickness. The increase of -is mainly attributed to the increase of theoretical head caused by increasing blockage of impeller inlet area. Hydraulic loss distribution analysis indicates that the total hydraulic loss within PAT is increased with increasing blade thickness. The increase of -curve is a combined effect of the increase in theoretical head and the total hydraulic loss. The decrease of efficiency with increasing blade thickness indicates that the blade thickness of PAT should be as thin as possible if its strength could be met.

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Section: Solutionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Research on Blade Thickness Influencing Pump as Turbine

Yang

Wang

Chen

et al. 2014

Advances in Mechanical Engineering

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“…The boundary condition for the inlet was static pressure and for the outlet was mass flow, which is said to be stable, converges quickly, and is used often. 17,18 In the steady calculation state, the simulation used the multireference frame technique, in which the impeller is situated in the rotating reference frame, and other static components are in the fixed reference frame. They are related to each other through the interface ''stage.''…”

Section: Computational Methods and Setupmentioning

confidence: 99%

Effects of staggered blades on the hydraulic characteristics of a 1400-MW canned nuclear coolant pump

Zhou

Wang

2016

Advances in Mechanical Engineering

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A canned nuclear coolant pump is used in an advanced third-generation pressurized water reactor. Impeller is a key component of a canned nuclear coolant pump. Usually, the blade is installed between the hub and the shroud as an entire part. The blade is divided into two parts and is staggered in the circumferential direction is an approach of blade design. To understand the effects of staggered blades on a canned nuclear coolant pump, this article numerically investigated different types of staggering. The validity of the numerical simulation was confirmed by comparing the numerical and experimental results. The performance change of a canned nuclear coolant pump with staggered blades was acquired. Hydraulic performance curves, axial force curves, static pressure distributions at the impeller outlet, and static pressure pulsations were performed to investigate the performance changes caused by the staggered blades. The results show that the staggered blade has an important influence on the performance of canned nuclear coolant pumps. A staggered blade does not improve hydraulic performance but does improve the axial force and pressure pulsation. Specifically, the staggered blades can significantly reduce the pressure pulsation amplitude on the impeller pass frequency.

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“…This corresponds to conclusions in Figure 3. It appears that the correct design of the spiral case could have a decisive influence on the final quality of the whole design [8]. Significance of this is obvious from comparison of the power dissipated inside the spiral case S2.…”

Section: Dissipated Powermentioning

confidence: 99%

“…Subsequently, dissipated powers in remaining regions of the pump will be plotted. The following section provides curves of power dissipated within spiral cases [8] S1 and S2 (see Figure 7). Contribution of blade channels to the stability of specific energy is very low for the impellers with thick trailing edges (see Figure 7).…”

Section: Dissipated Powermentioning

confidence: 99%

Influence of recirculation on Y-Q characteristic curve of hydrodynamic pump

Klas

Pochylý

Rudolf

2016

EPJ Web of Conferences

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Abstract. Contribution is focused on discussion of different design modifications of the volute, impeller and rotor-stator cavity in case of very low specific speed pump with recirculation channels. Amount of the liquid flowing through the recirculation channels has significant effect on delivery height, stability of the head curve and hydraulic efficiency. Analysis of these effects is based on the evaluation of the dissipated power in different internal parts of the pump and for different flow rates. It has already been proved in our previous research that volute has substantial impact on stability of the head curve. It is apparent that similar effect can also be attributed to distribution and shape of the recirculation channels. This fact is connected with the inflow into the channels and with magnitude of the flow rate through the recirculation channels. Influence of mentioned parameters on recirculation is discussed in present paper.

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Research on Pump Volute Design Method Using CFD

Cited by 43 publications

References 4 publications

Research on Blade Thickness Influencing Pump as Turbine

Research on Blade Thickness Influencing Pump as Turbine

Effects of staggered blades on the hydraulic characteristics of a 1400-MW canned nuclear coolant pump

Influence of recirculation on Y-Q characteristic curve of hydrodynamic pump

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