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1.
V. N. Babak T. B. Babak L. P. Kholpanov 《Theoretical Foundations of Chemical Engineering》2008,42(6):852-867
Mass transfer with solvent evaporation in the vapor-liquid two-phase film evaporators used for the removal of undesirable
impurities from liquid solutions at low pressure is studied. The average concentrations of solution components in the falling
liquid film are determined. The most efficient operating conditions for impurity removal, in which the resistance to mass
transfer is concentrated in the liquid phase, are found.
Original Russian Text ? V.N. Babak, T.B. Babak, L.P. Kholpanov, 2008, published in Teoreticheskie Osnovy Khimicheskoi Tekhnologii,
2008, Vol. 42, No. 6, pp. 654–670. 相似文献
2.
Kuzma-Kichta Yu. A. Ustinov A. K. Kholpanov L. P. 《Theoretical Foundations of Chemical Engineering》2002,36(6):524-530
Interface oscillations during boiling are studied experimentally and theoretically. The output-signal spectra of light and acoustic sensors indicate that the liquid-pressure and interface oscillations are interrelated. A model is suggested for the oscillations of a bubble growing on a heating surface, and the existence of an attractor is deduced for the first time from the solution of model equations. The data obtained enable one to determine the ranges of interface oscillation amplitude and frequency and can be used in the modeling of boiling. 相似文献
3.
L. P. Kholpanov Yu. S. Polyakov 《Journal of Engineering Physics and Thermophysics》2007,80(6):1140-1153
A model of turbulent heat-and mass transfer with nonlinear sources (sinks) that appear as a result of chemical reactions of
the first and second orders has been developed. The conjugation condition (equality of temperatures and local fluxes) at the
reactor — coolant interface was used for this purpose. A finite-difference numerical solution by the alternating direction
method is obtained. The influence of the coefficients of turbulent viscosity on heat-and mass transfer is investigated. The
model has been tested on the example of modeling fast polymerization processes. It has been established in practical calculations
of the processes of fast polymerization that instead of the model with variable coefficients of transfer and velocities of
liquid motion one can use its approximation with constant coefficients of transfer and velocities of liquid motion.
__________
Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 80, No. 6, pp. 73–85, November–December, 2007. 相似文献
4.
We developed an approach for the reduction of systems of nonlinear partial differential equations to the general nonlinear parabolic equation for a complex amplitude of an envelope wave. The equation is complexly derived: by using wave packages, method of many scales, modification of Mandelshtam method and taking into account group velocity of an envelope wave, that is typical for an actual nonlinear dispersive medium. We consider the features of such modeling for a system with nonlinearities occurring in the simplest model of a nonisothermal chemical reaction, in particular, of thermal autoignition and flame propagation. 相似文献
5.
Babak V. N. Babak T. B. Kholpanov L. P. 《Theoretical Foundations of Chemical Engineering》2004,38(5):462-477
It is shown that many gases interact with water by reactions similar to that characteristic of sulfur dioxide. The unsteady-state transfer of such gases from one quiescent phase into another is studied in the cases where these gases are absorbed by a liquid or released from a liquid solution. 相似文献
6.
L. P. Kholpanov 《Journal of Engineering Physics and Thermophysics》1965,8(5):391-396
Some aspects of two-phase film mass transfer in the absence of mass forces are examined. The results are novel in that the parametric equations contain expressions which take into account the physical properties of the contact phases. 相似文献
7.
8.
L. P. Kholpanov E. I. Nekrasova A. K. Nekrasov 《Journal of Engineering Physics and Thermophysics》2008,81(1):82-91
The problem of motion of monodisperse spherical particles in a heterogeneous medium in nonisothermal free convection of a
carrying incompressible liquid in a square cavity with inhomogeneous distribution of temperature on the walls is considered.
The problem is solved by the finite-difference method via joint solution of equations for the carrying phase in Euler variables
and the equation for a disperse particle in Lagrange variables.
__________
Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 81, No. 1, pp. 81–89, January–February, 2008. 相似文献
9.
L. P. Kholpanov N. S. Mochalova V. A. Malyusov N. M. Zhavoronkov 《Journal of Engineering Physics and Thermophysics》1984,47(2):871-874
Film condensation on a sphere is numerically analyzed, taking into account inertia and convection terms. An expression is derived for calculating the mean Nusselt number.Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 47, No. 2, pp. 181–184, August, 1984. 相似文献
10.
V. N. Babak T. B. Babak L. P. Kholpanov V. A. Malyusov 《Journal of Engineering Physics and Thermophysics》1986,50(3):330-335
A procedure is proposed for calculating matrix heat exchanger-recuperators, and it is shown that in the general case it is possible to adequately tabulate the efficiency as a function of the length of the apparatus for limited ranges of the important parameters.Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 50, No. 3, pp. 451–458, March, 1986. 相似文献