scholarly journals MATHEMATICAL MODELING OF HYDRODYNAMIC PROCESSES AND MASS TRANSFER IN THE CONVERTER BATH WHEN USING THE IRON-CONTAINING CONCENTRATES OF SLAG PROCESSING COMPLEXES

2017 ◽  
Vol 60 (6) ◽  
pp. 425-429
Author(s):  
S. N. Kuznetsov ◽  
E. V. Protopopov ◽  
S. V. Feiler ◽  
M. V. Temlyantsev
Keyword(s):  
Mathematical Modeling ◽  
Mass Transfer ◽  
Converter Bath ◽  
Hydrodynamic Processes ◽  
Slag Processing

scholarly journals Mathematical Modeling of Heat and Mass Transfer in Energy Science and Engineering 2014

2015 ◽  
Vol 2015 ◽  
pp. 1-3
Author(s):  
Zhijun Zhang ◽  
Hua-Shu Dou ◽  
Ireneusz Zbicinski ◽  
Zhonghua Wu ◽  
Jun Liu
Keyword(s):  
Mathematical Modeling ◽  
Mass Transfer ◽  
Heat And Mass Transfer ◽  
Science And Engineering ◽  
Energy Science

MATHEMATICAL MODELING OF CONCRETE STRUCTURE CORROSION IN BIOLOGICALLY AGGRESSIVE ENVIRONMENTS

2021 ◽  
Vol 3 (102) ◽  
pp. 55-67
Author(s):  
VARVARA E. RUMYANTSEVA ◽  
SVETLANA A. LOGINOVA ◽  
NATALIA E. KARTSEVA
Keyword(s):  
Mathematical Modeling ◽  
Mathematical Model ◽  
Mass Transfer ◽  
Parabolic Type ◽  
Cement Concrete ◽  
Mass Conductivity ◽  
Kinetics And Dynamics ◽  
Biological Corrosion ◽  
First Time ◽  
Fourth Kind

In the aquatic environment, biocorrosion is an important factor affecting the reliability and durability of concrete structures. The destruction of cement concretes during biological corrosion is determined by the processes of mass transfer. The article presents the development of a calculated mathematical model of liquid corrosion in cement concrete, taking into account the biogenic factor. For the first time, a model of mass transfer in an unbounded two-layer plate is considered in the form of differential equations of parabolic type in partial derivatives with boundary conditions of the second kind at the interface between concrete and liquid and of the fourth kind at the interface between concrete and biofilm. The results of a numerical experiment are presented to study the influence of the coefficients of mass conductivity and mass transfer on the kinetics and dynamics of the process.

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