Determination of internal heat and mass transfer parameters using characteristic functions of the thermodynamics of irreversible processes

We investigated heat and mass transfer on water based nanofluid due to the combined effects of homogeneous–heterogeneous reactions, an external magnetic field and internal heat generation. The flow is generated by the movement of a linearly stretched surface, and the nanofluid contains nanoparticles of copper and gold. Exact solutions of the transformed model equations were obtained in terms of hypergeometric functions. To gain more insights regarding subtle impact of fluid and material parameters on the heat and mass transfer characteristics, and the fluid properties, the equations were further solved numerically using the matlab bvp4c solver. The similarities and differences in the behavior, including the heat and mass transfer characteristics, of the copper–water and gold–water nanofluids with respect to changes in the flow parameters were investigated. Finally, we obtained the numerical values of the skin friction and heat transfer coefficients.

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NUMERICAL CALCULATION OF VELOCITY FIELDS FOR VISCO-ELASTIC MATERIALS IN CYLINDRICAL CHANNELS

VESTNIK OF ASTRAKHAN STATE TECHNICAL UNIVERSITY SERIES MANAGEMENT COMPUTER SCIENCE AND INFORMATICS ◽

10.24143/2072-9502-2019-2-19-28 ◽

2019 ◽

pp. 19-28

Author(s):

Ekaterina Valer'evna Fomenko ◽

Albert Hamed-Harisovich Nugmanov ◽

Thi Sen Nguyen ◽

Aleksanyan Igor Yuryevich Aleksanyan

Keyword(s):

Mass Transfer ◽

Heat And Mass Transfer ◽

Stokes Equations ◽

Radiation Power ◽

Wheat Gluten ◽

Internal Heat ◽

Velocity Fields ◽

Navier Stokes ◽

Navier Stokes Equation ◽

Suggested Approach

The article touches upon the application of the numerical finite difference method for solving Navier-Stokes equation in case of one-dimensional problem of passing a cooled viscoelastic material inside circular nozzles. There have been analyzed the specific features of using the method and presented the results of its application. The object of study was not chosen at random, because viscous properties of raw gluten are variable and depend on the temperature, chemical composition and properties of the feedstock. Working not properly with the object of research (phenomenon, process), but with its model helps to characterize its properties and behavior in various situations relatively quickly and without significant costs. The need to identify patterns of internal heat and mass transfer, which is based on studying the kinetics of the process, is obvious for physic-mathematical modeling of heat and mass transfer processes of wheat gluten granulation, in particular, analyzing the mechanism of moisture removal during its drying under radiation power supply. The results of the conducted research are consistent with the available data on the subject, and the suggested approach to solving the problem of choosing rational hydrodynamic regimes has been applied due to the difficulty of experimental determining the velocity fields and problematic analyzing the system of hydrodynamic differential Navier-Stokes equations with variable proportionality ratios.

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Application of methods of thermodynamics of irreversible processes to investigationofheat and mass transfer in a boundary layer

International Journal of Heat and Mass Transfer ◽

10.1016/0017-9310(61)90026-6 ◽

1961 ◽

Vol 3 (3) ◽

pp. 167-174 ◽

Cited By ~ 13

Author(s):

A.V. Luikov

Keyword(s):

Boundary Layer ◽

Mass Transfer ◽

Irreversible Processes ◽

Thermodynamics Of Irreversible Processes

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