Search Results - "Sentyabov, A. V."

Numerical simulation of swirling flow modes in a model of a hydraulic turbine and a draft tube by Minakov, A. V., Platonov, D. V., Sentyabov, A. V.

“…The influence of asymmetric boundary conditions on flow regimes in a model hydraulic turbine has been investigated. The curved draft tube is shown to have…”
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The numerical simulation of low frequency pressure pulsations in the high-head Francis turbine by Minakov, A.V., Platonov, D.V., Dekterev, A.A., Sentyabov, A.V., Zakharov, A.V.

“…•Numerical technique for calculating pressure pulsations in hydro turbines is presented.•This technique is applied for simulating unsteady turbulent flow in a…”
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Numerical simulation of turbulent flow around a 3D hydrofoil under the effect of corner separation by Sentyabov, A. V., Gavrilov, A. A., Dekterev, A. A.

“…The paper presents the results of numerical simulation of three-dimensional turbulent flow around a hydraulic turbine guide vane at the angle of attack of 9°…”
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Gap Cavitation in the End Clearance of a Guide Vane of a Hydroturbine: Numerical and Experimental Investigation by Sentyabov, A. V., Timoshevskiy, M. V., Pervunin, K. S.

“…The article presents results of numerical and experimental investigation of cavitation flow around two subscale models of guide vanes of hydroturbines, one of…”
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Numerical Investigation of Three-dimensional Cavitating Flow around a Guide Vane of a Water Turbine by Gavrilov, A. A., Sentyabov, A. V., Finnikov, K. A.

“…The results of numerical simulation of cavitating flow around the experimental model of a guide vane of a water turbine are given. The possibilities of the…”
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Modeling of swirling flows with coherent structures using the unsteady Reynolds stress transport model by Gavrilov, A. A., Dekterev, A. A., Sentyabov, A. V.

“…Swirling flows are investigated using an unsteady model based on the Reynolds stress transport equations. Swirling flows with vortex core precession are…”
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Simulation of conjugate heat transfer in a microchannel system by a hybrid algorithm by Filimonov, S. A., Dekterev, A. A., Sentyabov, A. V., Minakov, A. V.

“…A new hybrid method is proposed for solving the problems of fluid dynamics and heat transfer in complex hydraulic systems. The peculiarity of the method…”
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Numerical simulation of a double helix vortex structure in a tangential chamber by Sentyabov, A.V., Platonov, D.V., Shtork, S.I., Skripkin, S.G., Minakov, A.V.

“…•The double helix vortex structure in a tangential chamber was obtained by means of numerical simulation.•Three regimes were simulated according to different…”
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Vortical structures and pressure pulsations in draft tube of a Francis-99 turbine at part load: RANS and hybrid RANS/LES analysis by Gavrilov, A.A., Sentyabov, A.V., Dekterev, A.A., Hanjalić, K.

“…•Simulations showed the formation of spiralling coherent vortices in the draft tube.•Both hybrid RANS-LES and Re-stress models reproduced well the measured…”
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The analysis of unsteady flow structure and low frequency pressure pulsations in the high-head Francis turbines by Minakov, A.V., Platonov, D.V., Dekterev, A.A., Sentyabov, A.V., Zakharov, A.V.

“…•Structure of the flow behind the runner of the turbines was analyzed.•The effect of the flow structure on the intensity of non-stationary processes was…”
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Numerical Investigation of the Influence of Special Structures On Suppression of Pressure Pulsations in The Draft Tube of a High-Head Hydraulic Turbine by Sentyabov, A. V., Minakov, A. V., Platonov, D. V., Dekterev, D. A., Zakharov, A. V., Semenov, G. A.

“…The authors have performed numerical simulation of pressure pulsations in the draft tube of a hydraulic turbine that are excited by large-scale vortex…”
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Numerical investigation of the vortex core precession in a model hydro turbine with the aid of hybrid methods for computation of turbulent flows by Sentyabov, A. V., Gavrilov, A. A., Dekterev, A. A., Minakov, A. V.

“…Numerical modeling of the unsteady flow in the draft tube of the test bench hydro turbine is conducted. The hybrid RANS-LES methods for modeling turbulent…”
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Investigation of turbulence models for computation of swirling flows by Sentyabov, A. V., Gavrilov, A. A., Dekterev, A. A.

“…Different turbulence models were studied in application to calculation of swirling flows. The differential models of turbulent viscosity considering streamline…”
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Use of Methods of Mathematical Modeling to Analyze Low-Frequency Pressure Pulsations in the Continuous Run of High-Head HPP by Minakov, A. V., Platonov, D. V., Dekterev, A. A., Sentyabov, A. V., Pylev, I. M., Zakharov, A. V.

“…Anumerical procedure is presented for analysis of pressure pulsations in hydraulic turbines. Results of its use for description of unsteady turbulent flow in…”
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