Investigation of the influence of geometric parameters of a multi-nozzle jet pump on its energy characteristics

Cheremushkin, V; Polyakov, A.O.

doi:10.1088/1757-899x/779/1/012056

Cited by 2 publications

(2 citation statements)

References 4 publications

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“…Реологічні параметри рідини в процесі транспортування сипних середовищ у суміші з рідиною змінюються в широких діапазонах [21,22] і впливають на швидке зношування класичних насосів, що знижує ефективність гідравлічного транспорту [23]. Вихорокамерні насоси можуть мати більш високий ККД, ніж інші струминні насоси [24] під час перекачування неньютонівських рідин [19,20]. Однак їхня робота на таких середовищах ще не вивчена.…”

Section: аналіз публікаційunclassified

Flow fields of a non-Newtonian fluid in vortex chamber pumps

Rogovyi¹,

Neskorozhenyi²

2021

Bulletin of KhNAHU

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Problem. Pumping different fluids by hydraulic transport is associated with fast wear of the pump contact surfaces. The fluids being pumped are often non-Newtonian. The use of jet pumps for pumping is impractical due to low efficiency. Vortex chamber pumps may have higher efficiency when pumping non-Newtonian fluids, however, their operation on such fluids has not yet been studied. The aim of this work is to study the characteristics of the flow fields of a non-Newtonian fluid using the example of a Bingham fluid in the vortex chamber pump. Methodology. Predicting pump energy performance and determining flow fields for highly viscous fluids using CFD simulations enables advanced jet pumps to handle non-Newtonian fluids. Results. Modeling was carried out based on the numerical solution of the RANS equations with the SST turbulence model. To ensure the operability of the vortex chamber pump when pumping non-Newtonian fluid, with known rheological parameters of the mixture, it is necessary to select the required supply pressure for the active flow, and also to consider the issue of diluting the liquid with water to reduce the mixture viscosity and achieve the specified values of the pumping energy parameters. Originality. The hypothesis that the vortex chamber supercharger can operate on a hypothetical ideal fluid has been confirmed. In this case, the performance indicators of such a supercharger improve and tend to ideal. With an increase in plastic viscosity, the volumetric flow rate of the pumped fluid decreases, and at high values of the viscosity, an active flow is ejected through the axial channels. Practical value. Researchers can use the theoretical results of this work to design new devices for pumping other Bingham fluids, such as oil paint, resins, varnishes, swamp soils, and many others.

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Section: аналіз публікаційunclassified

Flow fields of a non-Newtonian fluid in vortex chamber pumps

Rogovyi¹,

Neskorozhenyi²

2021

Bulletin of KhNAHU

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“…But for all that, they have one significant disadvantage -very low efficiency, incomparable with the efficiency of vane pumps [7,8,9,10]. Despite numerous studies of working processes [11,12,13,14,15], improvement of designs and calculation methods [16,17,18], improvement of operating modes and regulation [4,8,19], it was not possible to significantly increase the efficiency of water jet pumps. This factor considerably limits the scope of their application.…”

Section: Introductionmentioning

confidence: 99%

Methodology for assessing the efficiency of water jet pumps in auxiliary systems of irrigation pumping stations

Kan

Mukhammadiev

et al. 2021

E3S Web Conf.

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The reliability and efficiency of irrigation pumping stations operation primarily depends on the well-coordinated operation of all systems. Drainage system should ensure that the building and territory of the pumping station are not flooded by drainage (filtration) water. At many pumping stations (especially those with long pressure lines), water jet pumps are installed as pumps for pumping out drainage water. The experience of operating such plants has revealed their undeniable advantages in comparison with conventional vane centrifugal pumps (type K and D) – sufficient reliability in operation due to the simplicity of the design, the absence of rubbing parts in the installation, the possibility of pumping contaminated liquids and the possibility of their use in the absence of power supply. But with all this, water jet pumps are extremely low-efficiency. To justify the use of jet pumps, a methodology is needed that would allow for a comprehensive consideration of all the main factors that affect their reliability, ease of operation and energy efficiency in the drainage system. On the example of the pumping station “Kiziltepa-2”, these factors were identified and the energy efficiency of water jet pumps was calculated. Various applications of jet pumps are considered, and their efficiency is evaluated.

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Investigation of the influence of geometric parameters of a multi-nozzle jet pump on its energy characteristics

Cited by 2 publications

References 4 publications

Flow fields of a non-Newtonian fluid in vortex chamber pumps

Flow fields of a non-Newtonian fluid in vortex chamber pumps

Methodology for assessing the efficiency of water jet pumps in auxiliary systems of irrigation pumping stations

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