Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
658351 | International Journal of Heat and Mass Transfer | 2013 | 10 Pages |
Abstract
The numerical algorithm developed in Part I is applied to a problem involving transient flow and solidification of a molten metal in a narrow gap, especially in the ventilation channels of die-cast dies. The presented algorithm is based on the lubrication approximation where the 2-D in-plane equations are obtained after integrating the 3-D flow equations. Applying heat balance over the control volume yields the accompanying temperature equation. These equations were applied to approximate flow and solidification in the narrow sections of a die-cast die. The numerical algorithm was verified by comparing the results with the ones obtained from the commercial software FLOW3D®, and the actual die-cast parts. Solidification characteristics were verified by measuring SDAS (secondary dendrite arm spacing). A parametric study explored the dependence of the metal flow-length in the channel on factors such as channel thickness, entrance metal velocity, and wall temperature. The presented algorithm was successfully implemented with significant savings in CPU time.
Keywords
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Fluid Flow and Transfer Processes
Authors
Alexandre Reikher, Krishna M. Pillai,