Search Results - "Zahorulko, Andriy"

Computational analysis for scallop seals with sickle grooves, part II: Rotordynamic characteristics by Zahorulko, Andriy V., Lee, Yong-Bok

“…•The design influence on the dynamic characteristics of scallop seals is studied.•The influence of loss mechanism on leakage and dynamic characteristics is…”
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Computational analysis for scallop seals with sickle grooves, part I: Leakage performance by Zahorulko, Andriy V., Lee, Yong-Bok

“…•The influence of scallop seal geometry on its leakage characteristics is studied.•The comparison of flow coefficients for scallop and other annular seals is…”
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Dynamic behavior and difference pressure control of difference pressure regulator for dry gas seals by Zahorulko, Andriy V., Lee, Yong-Bok

“…•To develop an analytical method for predicting gas DPR characteristics for DGS system.•To investigate the influence of turbulent inlet restrictor on static…”
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Experimental and Numerical Studies on the Influence of Blade Number in a Small Water Turbine by Peczkis, Grzegorz, Wiśniewski, Piotr, Zahorulko, Andriy

“…This paper demonstrates the procedure of blade adjustment in a Kaplan-type water turbine, based on calculations of the flow system. The geometrical adjustment…”
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Numerical Simulation of the Behavior of Impulse Gas Seals by Brunetière, Noël, Zahorulko, Andriy, Bouyer, Jean

“…This paper presents a numerical simulation of an impulse gas seal. Impulse gas seals are mechanical seals equipped with feeding grooves on the stator and…”
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Experimental and CFD analysis of static and dynamic rotor stabilities in three-annular seals by Zahorulko, Andriy, Pozovnyi, Oleksandr, Peczkis, Grzegorz

“…At the sealing pressures of 1.25, 2.5, 5, 7.5 or 10 bar and at a rotation speed of zero to 8000 rpm, using experiment and CFD simulation, the static and…”
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CFD study of radial and tangential forces in two-annular seals by Zahorulko, Andriy, Pozovnyi, Oleksandr, Peczkis, Grzegorz

“…Currently, as is known from the practical experience of using multi-annular seals, the cavities connecting the annuluses are one of the elements that…”
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A parametric and dynamic analysis of non-contacting gas face seals with modified surfaces by Blasiak, Slawomir, Zahorulko, Andriy V.

“…The application of various modifications such as micro-channels, compartments, micro-pores, texturing in mechanical non-contacting seals causes changes of…”
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Performance assessments and simulations of ROT (radial outflow turbine) for back-pressure turbine generator system by Kim, Jungwan, Ha, Yunseok, Zahorulko, Andriy, Lee, Yongbok

“…The high pressure steam is regulated by the Pressure-Reducing Valves (PRVs) to suit the various industrial process; however, this, inevitably leads to economic…”
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Computational Analysis of Sealing and Stability of a Deformable Floating and Fixed Rings of an Annular Seal by Zahorulko, Andriy, Borsuk, Serhii, Peczkis, Grzegorz

“…Solving the hydroelastic problem by using Ansys System Coupling (Mechanical and CFX) for floating and fixed rings of a deformable annular seal made it possible…”
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New Method for Nitrocarburizing Steel Parts by Tarelnyk, Viacheslav, Gaponova, Oksana, Martsynkovskyy, Vasyl, Konoplianchenko, Ievgen, Melnyk, Viktor, Vlasovets, Vitaliy, Dovzhyk, Mykhaylo, Zahorulko, Andriy, Tarelnyk, Nataliia, Polyvanyi, Anton

“…There is proposed a new process for nitrocarburizing steel parts by the method of electrospark alloying (ESA), which includes applying a paste-like nitrogenous…”
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