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Papers by Anton Kulyakhtin

Research paper thumbnail of Small-Scale Simulation of Seawater Icing in Natural Field Conditions

Research paper thumbnail of Icebergs drift in the Barents Sea: data analysis of ice tracking buoy and numerical simulations

Ice conditions in the North-West Barents Sea are described and analysed using field data collecte... more Ice conditions in the North-West Barents Sea are described and analysed using field data collected in annual cruise of RV Lance in the beginning of May 2009. During the cruise Iridium Ice Tracker was installed on drifting iceberg to monitor its motion. Synchronous measurements of sea current velocities were carried out from the drifting ice on the distance about 10 km from the iceberg when the ship was moored to the ice and drifted together with the ice. Collected data are used for the modelling of the ice and iceberg drift. The resistance of surrounding ice to the iceberg motion is discussed. Results of the modelling are compared with the collected data of the Ice Tracker and GPS positions of RV Lance moored to the ice.

Research paper thumbnail of Mechanism and Dynamics of Marine Ice Accretion on Vessel Archetypes

OTC Arctic Technology Conference, 2012

Research paper thumbnail of A time-dependent model of marine icing with application of computational fluid dynamics

Cold Regions Science and Technology, 2014

A tool predicting the spatial distribution of ice is required to take precautions against icing i... more A tool predicting the spatial distribution of ice is required to take precautions against icing in the design of offshore structures. This paper presents a 3-dimensional time-dependent model of icing caused by sea spray, called MARICE. The novelty of MARICE is that a computational fluid dynamics (CFD) solver is used to resolve the details of the airflow and heat transfer from the structure, to track the spray flow in the air, and to calculate the spatial distribution of the ice thickness on the structure. Two case studies illustrate the advantages of MARICE. In the first case study, the heat transfer was calculated on a structure with complex geometry, for which empirical formulas are hardly applicable. In the second, the MARICE, RIGICE04, and ICEMOD icing models predicted the time-series of ice accretion on a 90-m-diameter cylindrical structure. MARICE and RIGICE04 calculated similar total ice loads, which were higher than those calculated by ICEMOD. Both RIGICE04 and ICEMOD underestimated the heat transfer by a factor of 2 -5 compared to MARICE; however, RIGICE04 applies a greater spray flux than the other two models.

Research paper thumbnail of Numerical simulation of droplet impingement and flow around a cylinder using RANS and LES models

Journal of Fluids and Structures, 2014

ABSTRACT The paper is devoted to the numerical modeling of droplet impingement on a cylinder and ... more ABSTRACT The paper is devoted to the numerical modeling of droplet impingement on a cylinder and droplet transport behind it at a Reynolds number of 1.6×104. The objectives are to investigate the ability of different turbulence models to predict the collision efficiency and the droplet distribution in the wake in order to find the computationally most efficient way to achieve reliable results. The solutions of potential theory and four different RANS models are compared using the one obtained with Large Eddy Simulation as reference. The results show that the collision efficiency of the cylinder is predicted well by both potential theory and all considered RANS models for the given Reynolds number and droplet diameters of 13, 17, and 45 μm. However, only the RNG k–ε model with enhanced wall treatment results in the droplet flow in the wake behind the cylinder being similar to the results obtained by LES.

Research paper thumbnail of Numerical Simulations of 3D Spray Flow in a Wind Tunnel with Application of O’Rourke’s Interaction Algorithm and Its Validation

Research paper thumbnail of Small-Scale Simulation of Seawater Icing in Natural Field Conditions

Research paper thumbnail of Icebergs drift in the Barents Sea: data analysis of ice tracking buoy and numerical simulations

Ice conditions in the North-West Barents Sea are described and analysed using field data collecte... more Ice conditions in the North-West Barents Sea are described and analysed using field data collected in annual cruise of RV Lance in the beginning of May 2009. During the cruise Iridium Ice Tracker was installed on drifting iceberg to monitor its motion. Synchronous measurements of sea current velocities were carried out from the drifting ice on the distance about 10 km from the iceberg when the ship was moored to the ice and drifted together with the ice. Collected data are used for the modelling of the ice and iceberg drift. The resistance of surrounding ice to the iceberg motion is discussed. Results of the modelling are compared with the collected data of the Ice Tracker and GPS positions of RV Lance moored to the ice.

Research paper thumbnail of Mechanism and Dynamics of Marine Ice Accretion on Vessel Archetypes

OTC Arctic Technology Conference, 2012

Research paper thumbnail of A time-dependent model of marine icing with application of computational fluid dynamics

Cold Regions Science and Technology, 2014

A tool predicting the spatial distribution of ice is required to take precautions against icing i... more A tool predicting the spatial distribution of ice is required to take precautions against icing in the design of offshore structures. This paper presents a 3-dimensional time-dependent model of icing caused by sea spray, called MARICE. The novelty of MARICE is that a computational fluid dynamics (CFD) solver is used to resolve the details of the airflow and heat transfer from the structure, to track the spray flow in the air, and to calculate the spatial distribution of the ice thickness on the structure. Two case studies illustrate the advantages of MARICE. In the first case study, the heat transfer was calculated on a structure with complex geometry, for which empirical formulas are hardly applicable. In the second, the MARICE, RIGICE04, and ICEMOD icing models predicted the time-series of ice accretion on a 90-m-diameter cylindrical structure. MARICE and RIGICE04 calculated similar total ice loads, which were higher than those calculated by ICEMOD. Both RIGICE04 and ICEMOD underestimated the heat transfer by a factor of 2 -5 compared to MARICE; however, RIGICE04 applies a greater spray flux than the other two models.

Research paper thumbnail of Numerical simulation of droplet impingement and flow around a cylinder using RANS and LES models

Journal of Fluids and Structures, 2014

ABSTRACT The paper is devoted to the numerical modeling of droplet impingement on a cylinder and ... more ABSTRACT The paper is devoted to the numerical modeling of droplet impingement on a cylinder and droplet transport behind it at a Reynolds number of 1.6×104. The objectives are to investigate the ability of different turbulence models to predict the collision efficiency and the droplet distribution in the wake in order to find the computationally most efficient way to achieve reliable results. The solutions of potential theory and four different RANS models are compared using the one obtained with Large Eddy Simulation as reference. The results show that the collision efficiency of the cylinder is predicted well by both potential theory and all considered RANS models for the given Reynolds number and droplet diameters of 13, 17, and 45 μm. However, only the RNG k–ε model with enhanced wall treatment results in the droplet flow in the wake behind the cylinder being similar to the results obtained by LES.

Research paper thumbnail of Numerical Simulations of 3D Spray Flow in a Wind Tunnel with Application of O’Rourke’s Interaction Algorithm and Its Validation

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