The study of Y+ influence on the results of ANSYS CFX flow simulation in the centrifugal compressor radial inlet

Gileva, Lyubov; Aksenov, A.A.; Kozhukhov, Y. V.; Petrov, A. Yu.

doi:10.1063/5.0028560

Cited by 3 publications

(2 citation statements)

References 10 publications

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“…Here, the selection of the type of surrogate model is important, and can be decided based on its capability for handling complex geometries where it mimics the response of a few sample designs. For decades, ANN has been used effectively for the design optimization of turbomachine components [29], [32].…”

Section: Design Optimizationmentioning

confidence: 99%

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Optimization of Centrifugal Pump Impeller for Pumping Viscous Fluids Using Direct Design Optimization Technique

et al. 2022

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Pumping viscous fluids using centrifugal pumps in the subsea industry is very common. The pump performance degrades drastically when the viscosity of fluids increases, which ultimately gives rise to the installation and oil production cost. Their design optimization can lead to a significant improvement in their performance. Therefore, this study presented the effect of impeller geometry on pumping fluid viscosity through impeller design optimization. Here, pump operation is simulated numerically by solving the Reynolds-averaged Navier–Stokes (RANS) equations at different flowrates. Experimental testing is also performed using the same oils, for numerical validation. Artificial neural-network-assisted multiobjective optimization was performed with two independent design parameters; wrap angle and splitter blade length of impeller, with head and input power as objective functions. Wrap angle and splitter blade length, both significantly affect pump performance while pumping viscous oils; as the oil viscosity increases, increasing splitter length and decreasing wrap angle improve the head significantly.

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Section: Design Optimizationmentioning

confidence: 99%

“…Several surrogate models have recently been studied. The artificial neural network (ANN) model handles complex design problems better than other models, and also converges in fewer iterations [29][30][31]. Using a trained ANN model during optimization enables application of fast search algorithms efficiently [32].…”

Section: Introductionmentioning

confidence: 99%

Optimization of Centrifugal Pump Impeller for Pumping Viscous Fluids Using Direct Design Optimization Technique

et al. 2022

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Message approach for multiuser mode of a client-server application

Komarov

Blazhenova

Gavrilov

et al. 2021

2021 3rd International Youth Conference on Radio Electronics, Electrical and Power Engineering (REEPE)

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Theoretical Model and Numerical Analysis of the Tip Leakage Vortex Variations of a Centrifugal Compressor

et al. 2022

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A centrifugal compressor of a micro turbine generator system is investigated by the theoretical model and numerical analysis to explore the characteristics of the tip leakage vortex as the centrifugal compressor approaches stall. The numerical simulation results show the cross-sectional shape of the tip leakage vortex is elliptical, and its long and short axes are gradually stretched as the compressor approaches stall. Moreover, the vortex trajectory is inclined to the pressure side of the adjacent blade. In addition, the Kirchhoff elliptical vortex model is introduced to analyze the flow passage constriction effect, the passage vortex squeezing effect, and the leakage flow translation effect. Results show that there is no upper limit for the flow passage constriction effect on the tip leakage vortex. Furthermore, relative to the original vortex, the minimum constriction effect depends on the axis ratio of the elliptical tip leakage vortex. The passage vortex has an expansion effect on the tip leakage vortex rather than a squeezing effect, which is limited and also depends on the axis ratio of the ellipse. However, the effect magnitude of the leakage flow depends on the scales both of the long and short axes, which also have no upper limit.

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The study of Y+ influence on the results of ANSYS CFX flow simulation in the centrifugal compressor radial inlet

Cited by 3 publications

References 10 publications

Optimization of Centrifugal Pump Impeller for Pumping Viscous Fluids Using Direct Design Optimization Technique

Optimization of Centrifugal Pump Impeller for Pumping Viscous Fluids Using Direct Design Optimization Technique

Message approach for multiuser mode of a client-server application

Theoretical Model and Numerical Analysis of the Tip Leakage Vortex Variations of a Centrifugal Compressor

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