Repalova O. Heatexchange and dynamics of border crystallized phase formation in moving non-Newtonian liquid

Українська версія

Thesis for the degree of Candidate of Sciences (CSc)

State registration number

0409U002031

Applicant for

Specialization

  • 05.14.06 - Технічна теплофізика та промислова теплоенергетика

12-03-2009

Specialized Academic Board

Д 64.180.02

A. Podgorny Institute of Mechanical Engineering Problems of the National Academy of Sciences of Ukraine

Essay

The subject of the study is heatexchange and crystallization processes in hydrodynamic flows of liquids with complicated reology and pseudo plastic characteristics. The purpose is improvement of physical and mathematical models of the heatexchange processes in non-Newtonian liquids with border phases, investigation of stability and dynamics of crystal and moving phases in canals. Methods of study are methods of the theory of thermal conductivity, technical thermal physics and mathematical physics, experimental methods of flow visualization and thermo and barometry. Theoretical and practical results consist of development of mathematical model describing stationary heat conditions in the system including dissipative heat extraction in the liquid flow. Analytical conditions of boundary stability in such a system have been obtained. Dynamics of crystal layer thickness grow have been experimentally investigated, dependences of crystal phase grow have been obtained. Novelty: the criterion dependences determining the fields of stability of heat balance in the system with crystal phase near a wall of the canal have been obtained. Haw the beginning steady thickness layer influences upon border stability have been investigated. The realization level: developed model are used in research and production practice, which is confirmed by two acts of introduction and use. The field of application is engineering thermal physics and industrial heat-and-power engineering.

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