INTEGRATION OF THE NUMERICAL SOLUTION MODULE OF THE KINETIC EQUATION INTO THE CFD PACKAGE FOR THE VOLUME CONDENSATION PROBLEM OF THE VAPOR-GAS MIXTURE FLOW THROUGH A NOZZLE
https://doi.org/10.21822/2073-6185-2021-48-1-65-75
Abstract
Objective. Integrating the numerical solution module of the kinetic equation for the droplet size distribution function in a CFD package. Application of the module to volumetric condensation at the supersonic flow of a vapor-gas mixture through a nozzle in a two-dimensional formulation, comparison of the results with experimental data of third-party authors.
Methods. In this paper, the problem of volume condensation in the supersonic flow of a vapor-gas mixture through a nozzle is solved by finite element methods in a two-dimensional formulation using user-defined functions.
Results. A module for the numerical solution of the kinetic equation for the droplet size distribution function is presented as a user-defined function integrated into the calculated CFD package.
Conclusion. The module application to volumetric condensation for a vapor-gas mixture flow through the nozzle gave a qualitative agreement in all areas and a quantitative agreement in the area of intense condensation with measurement data. The distributions of temperatures, pressures, and the degree of supersaturation are presented both along the central axis and on the plane bounded by the contour of the computational domain. It is shown that the module does not depend on the solver type (stationary or non-stationary).
Keywords
volume condensation,
CFD,
finite element methods,
direct numerical solution,
kinetic equation,
supersonic sound,
nozzle
Supporting agencies: The research was carried out with the financial support of the RFBR in the framework of the scientific project No. 19-38-90247.
About the Authors
A. A. Sidorov
National Research University «MPEI»
Russian Federation
Graduate Student
14 Krasnokazarmennaya St., Moscow 111250, Russia
Russian Federation
Graduate Student
14 Krasnokazarmennaya St., Moscow 111250, Russia
A. K. Yastrebov
National Research University «MPEI»
Russian Federation
Cand. Sci. (Technical), Assoc. Prof., Department of Low temperatures
14 Krasnokazarmennaya St., Moscow 111250, Russia
Russian Federation
Cand. Sci. (Technical), Assoc. Prof., Department of Low temperatures
14 Krasnokazarmennaya St., Moscow 111250, Russia
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For citations:
Sidorov A.A., Yastrebov A.K. INTEGRATION OF THE NUMERICAL SOLUTION MODULE OF THE KINETIC EQUATION INTO THE CFD PACKAGE FOR THE VOLUME CONDENSATION PROBLEM OF THE VAPOR-GAS MIXTURE FLOW THROUGH A NOZZLE. Herald of Dagestan State Technical University. Technical Sciences. 2021;48(1):65-75. (In Russ.) https://doi.org/10.21822/2073-6185-2021-48-1-65-75
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