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Atomization and Sprays
Импакт фактор: 1.737 5-летний Импакт фактор: 1.518 SJR: 0.814 SNIP: 1.18 CiteScore™: 2.2

ISSN Печать: 1044-5110
ISSN Онлайн: 1936-2684

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Atomization and Sprays

DOI: 10.1615/AtomizSpr.2020031413
pages 75-95

VOLUME OF FLUID SIMULATION OF SHEET FORMATION AND PRIMARY BREAKUP OF NON-NEWTONIAN PROPELLANTS IN A PINTLE INJECTOR WITH VARIABLE INJECTION AREAS

Kanmaniraja Radhakrishnan
Graduate School, Department of Aerospace and Mechanical Engineering, Korea Aerospace University, Goyang, Gyeonggi-do, 10540, Republic of Korea
Jaye Koo
School of Aerospace and Mechanical Engineering, Korea Aerospace University, Goyang, Gyeonggi-do, 10540, Republic of Korea
Yongseok Hwang
Agency for Defense Development, Daejeon, 34060, Republic of Korea

Краткое описание

Two-dimensional axisymmetric large eddy simulation was conducted to model the sheet formation and primary breakup of gelled kerosene and gelled hydrogen peroxide in a pintle injector. This was done by varying the pintle opening distance. To simulate a hollow conical gelled hydrogen peroxide sheet from the center gap and the sheet breakup by the gelled kerosene from the annular gap, volume of fluid (VOF) simulation was employed. Here, the viscosity was considered as a function of the shear rate. The power law expression for hydrogen peroxide and the Herschel-Bulkley extended expression for kerosene were used as the user-defined function codes. The variations of the breakup length, wavelength, and the amplitude of the formed sheet due to disturbance waves using VOF simulation with varied pintle opening distances were studied. The viscosity distributions due to the shear rate of the gel flow and the velocity at the exit of the injector were plotted to investigate the gel flow behavior.

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