Numerical and Experimental Simulation of Supersonic Gas Outflow into a Low-Density Medium

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Numerical and Experimental Simulation of Supersonic Gas Outflow into a Low-Density Medium. / Dubrovin, Kirill; Yarkov, Lev; Zarvin, Alexandr и др.

в: Aerospace, Том 11, № 905, 905, 11.2024.

Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование

BibTeX

@article{01743284fd4b4693a8f27373f59b3d05,

title = "Numerical and Experimental Simulation of Supersonic Gas Outflow into a Low-Density Medium",

abstract = "This study is aimed at developing methods for the experimental and numerical simulation of the outflow of underexpanded gas jets into a rarefied medium. The numerical method is based on using Navier–Stokes equations in the continuum flow regime and the direct simulation Monte Carlo method in the transitional flow regime. The experimental method includes the modeling of jet flows in the LEMPUS-2 gas-dynamic setup with electron beam diagnostics for the jet density measurements. The results of the experimental modeling for the nozzles of various diameters confirm that a key parameter determining the jet structure is the Reynolds number based on the characteristic length ReL. The results of the numerical simulations agree well with the experimental data both for the maximum values of the ReL considered (approximately 30) when a barrel jet structure with Mach disks is formed and for the minimum values (approximately 4) when no Mach disks are formed. In the entire range of parameters, significant thermal nonequilibrium is observed at all jet segments where the measurements are performed.",

keywords = "direct simulation Monte Carlo method, electron beam diagnostics, thermal nonequilibrium, underexpanded jets, vacuum gas dynamics",

author = "Kirill Dubrovin and Lev Yarkov and Alexandr Zarvin and Alexander Zaitsev and Valeriy Kalyada and Alexandr Yaskin and Yevgeniy Bondar",

note = "The research was supported by the Russian Science Foundation, grant number 22-19-00750.",

year = "2024",

month = nov,

doi = "10.3390/aerospace11110905",

language = "English",

volume = "11",

journal = "Aerospace",

issn = "2226-4310",

publisher = "Multidisciplinary Digital Publishing Institute (MDPI)",

number = "905",

}

RIS

TY - JOUR

T1 - Numerical and Experimental Simulation of Supersonic Gas Outflow into a Low-Density Medium

AU - Dubrovin, Kirill

AU - Yarkov, Lev

AU - Zarvin, Alexandr

AU - Zaitsev, Alexander

AU - Kalyada, Valeriy

AU - Yaskin, Alexandr

AU - Bondar, Yevgeniy

N1 - The research was supported by the Russian Science Foundation, grant number 22-19-00750.

PY - 2024/11

Y1 - 2024/11

N2 - This study is aimed at developing methods for the experimental and numerical simulation of the outflow of underexpanded gas jets into a rarefied medium. The numerical method is based on using Navier–Stokes equations in the continuum flow regime and the direct simulation Monte Carlo method in the transitional flow regime. The experimental method includes the modeling of jet flows in the LEMPUS-2 gas-dynamic setup with electron beam diagnostics for the jet density measurements. The results of the experimental modeling for the nozzles of various diameters confirm that a key parameter determining the jet structure is the Reynolds number based on the characteristic length ReL. The results of the numerical simulations agree well with the experimental data both for the maximum values of the ReL considered (approximately 30) when a barrel jet structure with Mach disks is formed and for the minimum values (approximately 4) when no Mach disks are formed. In the entire range of parameters, significant thermal nonequilibrium is observed at all jet segments where the measurements are performed.

AB - This study is aimed at developing methods for the experimental and numerical simulation of the outflow of underexpanded gas jets into a rarefied medium. The numerical method is based on using Navier–Stokes equations in the continuum flow regime and the direct simulation Monte Carlo method in the transitional flow regime. The experimental method includes the modeling of jet flows in the LEMPUS-2 gas-dynamic setup with electron beam diagnostics for the jet density measurements. The results of the experimental modeling for the nozzles of various diameters confirm that a key parameter determining the jet structure is the Reynolds number based on the characteristic length ReL. The results of the numerical simulations agree well with the experimental data both for the maximum values of the ReL considered (approximately 30) when a barrel jet structure with Mach disks is formed and for the minimum values (approximately 4) when no Mach disks are formed. In the entire range of parameters, significant thermal nonequilibrium is observed at all jet segments where the measurements are performed.

KW - direct simulation Monte Carlo method

KW - electron beam diagnostics

KW - thermal nonequilibrium

KW - underexpanded jets

KW - vacuum gas dynamics

UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85210434319&origin=inward&txGid=776597fa04791c682051cff067acb5d5

UR - https://www.mendeley.com/catalogue/d255ed99-b682-363b-8df2-3a3f025a52cd/

U2 - 10.3390/aerospace11110905

DO - 10.3390/aerospace11110905

M3 - Article

VL - 11

JO - Aerospace

JF - Aerospace

SN - 2226-4310

IS - 905

M1 - 905

ER -

ID: 61147151