Numerical Simulation and Validation of Gas and Molten Metal Flows in Close-Coupled Gas Atomization

被引：7

作者：

Hernandez, F. ^{[1
]}

Riedemann, T. ^{[1
]}

Tiarks, J. ^{[1
]}

Kong, B. ^{[1
]}

Regele, J. D. ^{[2
,3
]}

Ward, T. ^{[2
]}

Anderson, I. E. ^{[1
]}

机构：

[1] US DOE, Ames Lab, Ames, IA 50011 USA

[2] Iowa State Univ, Dept Aerosp Engn, Ames, IA 50011 USA

[3] Los Alamos Natl Lab, Los Alamos, NM 87545 USA

来源：

TMS 2019 148TH ANNUAL MEETING & EXHIBITION SUPPLEMENTAL PROCEEDINGS | 2019年

关键词：

INTERFACE CAPTURING SCHEME;

D O I：

10.1007/978-3-030-05861-6_143

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Molten metal atomization in close-coupled gas atomization dies can operate between two limiting conditions, jetting and filming, together with several complex mechanisms: liquid-gas drafting, downward/upward shearing, melt bouncing, etc. Liquid jet deformation depends on flow and geometric parameters, such as liquid Reynolds, liquid Weber, and gas Mach numbers, as well as gas jet apex angle and melt tube tip extension and aspect ratio, among others. Understanding their effect is of importance for the metal powder making industry. Numerical gas atomization studies can provide approximated flow information and consider a wide range of conditions, beyond experimental reach. Here, 3D high-resolution simulations employing a 5-equation compressible flow model coupled with the volume-of-fluid method are compared with experiments, for liquid Weber number in the range of 1-30 and liquid Reynolds number below 10,000. This validation explores the predicting capabilities of the numerical model.

引用

页码：1507 / 1519

页数：13

共 22 条

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