Search Results - "Cherdantsev, Andrey"

Three-dimensional evolution and interaction of disturbance waves on a gas-sheared liquid film on a horizontal plane near the transition region by Cherdantsev, Andrey V.

“…•Gas-sheared liquid film flow is studied in a horizontal rectangular duct.•Transition to disturbance waves is best described by velocity gradient.•Amplitude…”
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Experimental and numerical study of formation and development of disturbance waves in annular gas-liquid flow by Fan, Wenyuan, Cherdantsev, Andrey V., Anglart, Henryk

“…Disturbance waves in a downwards annular gas-liquid flow were investigated experimentally and numerically in this study. In the experiment, the…”
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Studying the impacts of droplets depositing from the gas core onto a gas-sheared liquid film with stereoscopic BBLIF technique by Cherdantsev, Andrey V., Sinha, Avick, Hann, David B.

“…•High-speed oblique droplet impacts onto a wavy gas-sheared liquid film are studied•A new stereoscopic BBLIF technique characterizes droplets and film in a 3D…”
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Study of bubbles entrapped into a gas-sheared liquid film by Hann, David B., Cherdantsev, Andrey V., Azzopardi, Barry J.

“…•Bubbles entrapped by gas-sheared liquid film are studied simultaneously with the waves.•A number of scenarios of bubbles creation and collapse were…”
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Study of initial stage of entry of a solid sphere into shallow liquid with Synthetic Schlieren technique by Cherdantsev, Andrey V., Gavrilov, Nikolay V., Ermanyuk, Evgeny V.

“…•The entry of a solid sphere into a liquid of finite depth is studied with Synthetic-Schlieren technique.•Spatiotemporal evolution of free surface before the…”
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Study of gas-sheared liquid film in horizontal rectangular duct using high-speed LIF technique: Three-dimensional wavy structure and its relation to liquid entrainment by Cherdantsev, Andrey V., Hann, David B., Azzopardi, Barry J.

“…•Flow of horizontal gas-sheared film is studied using LIF technique.•Film thickness data are resolved in longitudinal and transverse coordinates and time.•The…”
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Stratified-to-annular gas-liquid flow patterns transition in a horizontal pipe by Cherdantsev, Andrey V., Zdornikov, Semyon A., Cherdantsev, Mikhail V., Isaenkov, Sergey V., Markovich, Dmitry M.

“…•Downstream development of initially stratified gas-liquid flow is analyzed.•The liquid film climbs up the walls gradually due to secondary flow in the…”
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Application of Planar Laser-Induced Fluorescence for Interfacial Transfer Phenomena by Dulin, Vladimir, Cherdantsev, Andrey, Volkov, Roman, Markovich, Dmitriy

“…The present review describes the current achievements in the applications of a planar laser-induced fluorescence (PLIF) method for the diagnostics of liquid…”
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The effect of high-frequency oscillations on the disturbance waves in annular flow by Cherdantsev, Andrey V., Isaenkov, Sergey V., Cherdantsev, Mikhail V., Markovich, Dmitry M.

“…•Periodic oscillations of liquid flow rate were applied to control annular gas-liquid flow.•The flow becomes much more regular under excitation within a…”
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Regular large waves on thick falling liquid films by Cherdantsev, Andrey, Isaenkov, Sergey, Markovich, Dmitry

“…Here we investigate the possibility to create regular waves on falling liquid films that would survive for long distances. The flow is investigated in a 20-mm…”
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Application of a high-speed laser-induced fluorescence technique for studying the three-dimensional structure of annular gas–liquid flow by Alekseenko, Sergey, Cherdantsev, Andrey, Cherdantsev, Mikhail, Isaenkov, Sergey, Kharlamov, Sergey, Markovich, Dmitry

“…The wavy structure of liquid film in annular gas–liquid flow was studied using a high-speed modification of the laser-induced fluorescence (LIF) technique,…”
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Study of disturbance wave development in downwards annular flows with a moving frame-of-reference brightness-based laser-induced fluorescence method by An, Jae Sik, Cherdantsev, Andrey V., Zadrazil, Ivan, Markides, Christos N.

“…A novel moving frame-of-reference brightness-based laser-induced fluorescence (MFoR-BBLIF) method was developed and demonstrated in downwards co-current…”
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Effect of Liquid Viscosity and Flow Orientation on Initial Waves in Annular Gas–Liquid Flow by Isaenkov, Sergey V., Vozhakov, Ivan S., Cherdantsev, Mikhail V., Arkhipov, Dmitry G., Cherdantsev, Andrey V.

“…The complex wave structure of annular gas–liquid flow with disturbance waves and liquid entrainment is a result of the evolution of high-frequency initial…”
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The effect of increasing gas shear on wave structure of thin liquid films by Isaenkov, Sergey, Vozhakov, Ivan, Cherdantsev, Mikhail, Cherdantsev, Andrey

“…Evolution of thin liquid films sheared by co-current gas stream in a vertical 11.7 mm pipe is studied experimentally using BBLIF technique. The main goal is to…”
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Study of the impacts of droplets deposited from the gas core onto a gas-sheared liquid film by Cherdantsev, Andrey V., Hann, David B., Hewakandamby, Buddhika N., Azzopardi, Barry J.

“…•Impacts of droplets, depositing from gas core, are studied experimentally.•Two types of film perturbation due to impacts - craters and furrows - are…”
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Fast droplets impacting liquid layer under a small angle: a numerical analysis of experimental observations by Cherdantsev, Andrey, Vozhakov, Ivan

“…•Droplet escapes initial crater at angles < 15° and remains inside it at angles > 45°.•Furrow is a chain of craters; between them, secondary entrainment may…”
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Three-dimensional investigation of liquid film structure at the initial area of annular-dispersed flow by Alekseenko, Sergey, Cherdantsev, Andrey, Cherdantsev, Mikhail, Isaenkov, Sergey, Markovich, Dmitriy

“…Initial stage of downward flow of gas-sheared liquid film in a vertical rectangular duct was studied using brightness-based laser-induced fluorescence…”
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Measuring liquid film thickness based on the brightness level of the fluorescence: Methodical overview by Cherdantsev, Andrey, Bobylev, Aleksey, Guzanov, Vladimir, Kvon, Alexandr, Kharlamov, Sergey

“…•Method of film thickness measurements using brightness level of LIF is analyzed.•Method principle, calibration and recalculation procedures are described in…”
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Experimental and theoretical study of stationary nonlinear three-dimensional wave regimes on a straight rivulet flowing down an inclined plane by Guzanov, Vladimir, Aktershev, Sergey, Bobylev, Aleksey, Kvon, Alexandr, Cherdantsev, Andrey

“…•Wavy flow of a rivulet on inclined plate is studied experimentally and theoretically.•Plate inclination, rivulet width, flow rate, and forcing frequency are…”
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Axial and azimuthal development of disturbance waves in annular flow in a horizontal pipe by Zdornikov, Semyon A., Isaenkov, Sergey V., Cherdantsev, Andrey V.

“…•Flow development on pipe bottom is qualitatively the same as in vertical pipes.•Disturbance waves are created at pipe bottom and spread…”
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