MULTIDIRECTIONAL SOLIDIFICATION MODEL FOR THE DESCRIPTION OF MICROPORE FORMATION IN SPRAY DEPOSITION PROCESSES
作者:
J.-P. Delplanque,
E. J. Lavernia,
R. H. Rangel,
期刊:
Numerical Heat Transfer, Part A: Applications
(Taylor Available online 1996)
卷期:
Volume 30,
issue 1
页码: 1-18
ISSN:1040-7782
年代: 1996
DOI:10.1080/10407789608913825
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
This article describes a numerical investigation of micropore formation in solidifying molten metal droplets impinging on a colder substrate. The velocity field inside the spreading liquid droplet is computed as a solution of the incompressible Navier-Stokes equations, and a volume-of-fluid function is defined in order to track the location of the free surface. A multidirectional solidification model is implemented to simulate the formation of possible pores, cavities, and/or troughs. This tracking algorithm allows for complex interface morphology representation as well as interface merging simulation. In the test case considered (high-velocity impact of a single droplet), simulations predict the formation of an annular trough on the surface of the solidified splat. This feature may be a precursor of pore or cavity formation in multiple-droplet cases.
点击下载:
PDF (530KB)
返 回