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The characteristic time scales determine the complexity of the problem.
For example, if the time for heat transfer/solidification process
in the die cavity is much larger than the
filling time than the problem can broken into three separate cases
1)the fluid mechanics, the filling process, and 2)the heat transfer
and solidification 3) dissipation (maybe considered with solidification).
Conversely, the real problem in die filling is that we would like to the
heat transfer process to be slower than the filling process to ensure
a proper filling.
The same can be said about other processes.
3.4.1 Utilizing semi dimensional analysis for characteristic time
Genick Bar-Meir ||| www.potto.org
copyright Dec , 2006
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