Projektipäällikkö Dmitry Gradov

Mobile phone: +358465470573
ORCID ID: (Go to ORCID profile)
Uploaded on: 02/03/2021

Current Organisation
Separation Science (Superior organisation: LUT School of Engineering Science)

Research Interest
Main idea of the current research is adoption of Computation Fluid Dynamics (CFD) tools for metallurgical unit design and optimization. Particular interest lies in modelling of batch stirred reactor for hydrometallurgical gold extraction. Batch process is modelled by CFD to capture primary phase flow field and secondary phases (air bubbles and solids) distribution. Baffled tank with Rushton turbine is an object of study. Multiphase modelling results are validated by means of Particle Image Velocimetry (PIV). PIV technique is capable to provide average velocity flow field of both single and multiphase flows. CFD for engineering application mostly explores Reynolds-averaged Navier-Stokes two equation models (RANS) which means that PIV validation suits current needs. When mixing is described successfully chemistry models can be coupled to get comprehensive model of batch reactor. Auxiliary work is currently going dedicated to modelling of flow caused by ultra sound inducing. Media of study are Newtonian and non-Newtonian liquids. Applied ultra sound produced no visible cavitation therefore flow description could be performed by RANS models. The output of the auxiliary work is expected to be a range of constants of RANS turbulence formulation in order to tune simple reactor systems with ultra sound agitation for experimental data fitting.

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Auto-Aspirated DAF Sparger Study on Flow Hydrodynamics, Bubble Generation and Aeration Efficiency (2020)
A1 Journal article (refereed), original research
Gradov Dmitry, Saren Andrey, Kauppi Janne, et al.
Study on the internal two-phase flow of the inverted-umbrella aerator (2019)
A1 Journal article (refereed), original research
Dong Liang, Liu Jiawei, Liu Houlin, et al.
Advances in Mechanical Engineering
Experimental investigation of reagent feeding point location in a semi-batch precipitation process (2018)
A1 Journal article (refereed), original research
Gradov Dmitry, González Gerardo, Vauhkonen Marko, et al.
Chemical Engineering Science
Experimental study of raw diary manure rheology subjected to anaerobic digester (2018)
A4 Conference proceedings
Reza-zadeh Niki, Gradov Dmitry, Sun Xianpeng, et al.
2018 ASABE Annual International Meeting
Numerical simulation of biomass growth in OKTOP®9000 reactor at industrial scale (2018)
A1 Journal article (refereed), original research
Gradov Dmitry, Han Mei, Tervasmäki Petri, et al.
Industrial && Engineering Chemistry Research
The effect of front streamline wrapping angle variation in a super-low specific speed centrifugal pump (2018)
A1 Journal article (refereed), original research
Liang Dong, Yuqi Zhao, Houlin Liu, et al.
Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science
Tools for reactor evaluation in bioprocesses (2018)
A4 Conference proceedings
Tervasmäki Petri, Gradov Dmitry, Latva-Kokko Marko, et al.
Book of Proceedings of STEPsCON 2018
Applicability assessment of gas-liquid contactors to the fermentation processes (2017)
A4 Conference proceedings
Han Mei, Vladimirovich Gradov Dmitry, Bogatenko Daria, et al.
10th World Congress of Chemical Engineering
Experimental and Numerical Study of Multiphase Mixing Hydrodynamics in Batch Stirred Tank Applied to Ammoniacal Thiosulphate Leaching of Gold (2017)
A1 Journal article (refereed), original research
Gradov Dmitry, Gonzalez Gerardo, Vauhkonen Marko, et al.
Journal of Chemical Engineering and Process Technology
Influence of the Relative Position of Impeller and Baffles in Multiple Reference Frame Simulation of Gas-Liquid Mixing in Stirred Tank (2017)
A1 Journal article (refereed), original research
Gradov Dmitry, Laari Arto, Koiranen Tuomas
International journal of chemical engineering and applications

Last updated on 2021-02-03 at 04:02

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