タイトル | The effects of shrinkage flow and gravity level on the onset of convection during vertical directional dendritic solidification of NH4Cl-H2O |
著者(英) | Mccay, M. H.; Mccay, T. D.; Hopkins, J. A. |
著者所属(英) | NASA Marshall Space Flight Center |
発行日 | 1993-01-01 |
言語 | eng |
内容記述 | A numerical investigation of the conditions influencing the onset of convection during Bridgman vertical directional solidification of NH4Cl- 72 wt percent H2O has been made using a linear stability model. The effects of shrinkage flow and gravity level on the transition from diffusion-dominated to convection-dominated solidification are shown to be significant. Both shrinkage flow opposite the direction of growth and increased gravity levels tend to decrease the stability limits defining the onset of convection for the solidifying NH4Cl-H2O system. |
NASA分類 | MATERIALS PROCESSING |
レポートNO | 93A22667 AIAA PAPER 93-0261 |
権利 | Copyright |