NUMERICAL SIMULATION OF STRATIFIED SUBMERGED JET
https://doi.org/10.25205/2541-9447-2018-13-1-45-53
Abstract
In this paper, stratified jet flows are investigated using the numerical simulation method. For a high accuracy of spatial discretization of the Navier-Stokes equations the method of spectral elements was chosen. By the method of direct numerical simulation (DNS) the solution algorithm was validated using the example of a turbulent flow in a periodic pipe with Reynolds number Re = 5 300, constructed using the average velocity and the diameter of the pipe. Comparison of statistical characteristics showed good agreement with the literature data. A further investigation was concentrated on a circular turbulent air jet flowing into a space filled with air, helium or carbon dioxide. For the air-to-air pair, the results are shown to be in good agreement with the literature data and other LES calculations. During the analysis of the helium-air and carbon dioxide-air pairs, their basic similarities and differences were revealed both with each other and with the air-air pair, it was suggested that the effects associated with stratification predominate over viscous effects.
About the Authors
V. A. Ivashchenko
Novosibirsk State University; Institute of Thermophysics SB RAS
Russian Federation
Russian Federation
R. I. Mullyadzhanov
Novosibirsk State University; Institute of Thermophysics SB RAS
Russian Federation
Russian Federation
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Review
For citations:
Ivashchenko V.A., Mullyadzhanov R.I. NUMERICAL SIMULATION OF STRATIFIED SUBMERGED JET. SIBERIAN JOURNAL OF PHYSICS. 2018;13(1):45-53. (In Russ.) https://doi.org/10.25205/2541-9447-2018-13-1-45-53
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