Three-dimensional numerical simulation of gas dynamics effects on spray forming process
- Carnegie Mellon Univ., Pittsburgh, PA (United States). Mechanical Engineering Dept.
- Aluminum Co. of America, Alcoa Center, PA (United States). Alcoa Technical Center
This paper describes three dimensional computational simulations of transport phenomena in a spray forming process. Major effort of this study has been focused on investigation of the effects of three-dimensional gas flow characteristics on the aluminum droplets deposition in an actual spray chamber. The preform shape resulted from the existing chamber condition is statistically modeled and compared with a two-dimensional simulation under similar conditions. The numerical procedure presented in this study is a fully interacting combination of Eulerian flow and Lagrangian droplet calculations combined with droplet turbulent dispersion and solidification models. It also includes a physical model of interaction between spray droplets and substrate. The rebound velocity of an impinging droplet is modeled based on the size, velocity, and solid fraction of the droplet. The present simulation suggests that three-dimensional modeling is critical to accurately simulate the transport phenomena in the present spray chamber.
- OSTI ID:
- 428092
- Report Number(s):
- CONF-960815--; ISBN 0-7918-1505-6
- Country of Publication:
- United States
- Language:
- English
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