Application of heterogeneous blading systems is the way for improving efficiency of centrifugal energy pumps

Pochylý, František; Haluza, Miloslav; Fialová, Simona; Dobšáková, Lenka; Волков, А. В.; Parygin, A. G.; Naumov, A. V.; Vikhlyantsev, A. A.; Druzhinin, Anatoly

doi:10.1134/s0040601517110088

Cited by 4 publications

(1 citation statement)

References 1 publication

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“…A comparison of integral parameters (e.g. head and power consumption) provides first insight on whether the applied model settings are plausible for the area of interest [1,2,4]. Current research was concentrated on part load regimes and therefore most of the data was collected only for the part load operation.…”

Section: Performance Curvesmentioning

confidence: 99%

Impact of Interface Model on Simulation Results of a Radial Pump at Part Load and Shut-Off Conditions

2021

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Computational Fluid Dynamics (CFD) is a well-known tool for predicting and analyzing performance in a variety of engineering branches, including turbomachinery, allowing engineers to partially replace physical experiments with their virtual analog. Nevertheless, numerical analysis should be used carefully regarding possible deviation between simulated and experimental results due to multiple reasons (including but not limited to applied simplifications in the numerical model). These deviations usually have their minima close to the Best Efficiency Point (BEP). The paper deals with analyzing the outcome of steady-state simulations for a radial pump at strong part load and shut-off conditions by switching between three simulation types (steady-state with mixing plane, steady-state with frozen rotor, transient with sliding mesh). A comparison of velocity profiles on the interface surfaces is made, showing how the chosen interface model affects the structures being formed at part load conditions. These effects show particular impact on performance parameters (first of all, head production), which is discussed in the paper. The information provided could be helpful for adjusting the simulation parameters and finding an appropriate compromise between simulation reliability and demand for computational time thereby.

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Section: Performance Curvesmentioning

confidence: 99%

Impact of Interface Model on Simulation Results of a Radial Pump at Part Load and Shut-Off Conditions

2021

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Methodology and algorithm for calculating and selecting of pumping aggregates for storage tanks of liquid products

Akimenko

Anikeev

Voronin

2022

Modeling of Systems and Processes

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This article presents a methodology for calculating the basic parameters and selecting of centrifugal pumping units for filling (emptying) storages of liquid products (for example, vegetable oils). Centrifugal pumping units are widely used in the operation of tank farms for various needs of the national economy, in particular, for temporary storage of liquid products in sea and river ports when they are transshipped from land transport to ships, or from ships to land transport. As an example, the projected storage of vegetable oils in the port of Yeysk (Azov sea, Krasnodar region, Russian Federation) is given. The methodology includes the calculation of average fluid velocities, linear and local hydraulic losses in the intake and pressure pipelines, pipeline diameters, pump performance, the pressure created by it, electric drive power; equipment selection. Based on the proposed methodology, an algorithm has been created for calculating and selecting a pumping unit for transporting of liquid products from vehicles to a storage tank, or vice versa. The methodology and algorithm discussed in this article can be used in the design of storage facilities for various liquids at manufacturing plants, transshipment bases, etc.

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Methodology and algorithm for calculating linear liquid pressure looses in pipelines

Akimenko

Anikeev

Voronin

2022

Modeling of Systems and Processes

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This article describes the methodology and algorithm for determining linear fluid pressure losses in pipeline. Liquid substances widely used in the national economy are usually stored in special tanks. To store a large amount of liquid product, separate tanks are combined into tank farms. Tank farms are being built at industrial enterprises and transshipment bases of various transport systems. An example of this is the storage of vegetable oils in the seaport of Yeysk (Russian Federation, Krasnodar territory). Pumps (mainly centrifugal), pipelines, auxiliary devices are used to transfer liquid cargo from a vehicle to a tank, or back. The design of liquid product storage is impossible without hydraulic calculation of this equipment. Pressure losses to overcome hydraulic resistances have a significant impact on the operation of pipeline systems. The methodology of calculating linear fluid pressure losses in pipelines includes the determination of the flow mode (laminar/turbulent), followed by the calculation of the Darcy friction coefficients. Based on the results obtained, the pressure loss along the flow length is calculated, taking into account the geometric characteristics of the pipeline (length, diameter) and the fluid velocity. The methodology was used to construct an algorithm for calculating linear fluid pressure losses. This algorithm can be applied as part of a previously created algorithm for calculating and selecting a pumping unit for storage of liquid products.

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Application of heterogeneous blading systems is the way for improving efficiency of centrifugal energy pumps

Cited by 4 publications

References 1 publication

Impact of Interface Model on Simulation Results of a Radial Pump at Part Load and Shut-Off Conditions

Impact of Interface Model on Simulation Results of a Radial Pump at Part Load and Shut-Off Conditions

Methodology and algorithm for calculating and selecting of pumping aggregates for storage tanks of liquid products

Methodology and algorithm for calculating linear liquid pressure looses in pipelines

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