الفهرس 
Macro cale (mm) 1959-1965
Solidification SimulationOnly 14 pages are availabe for public view
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Abstract
Fluid flow model is considered and coupled with the equations of heat
transfer to improve the solidification model. However, fluid flow
modeling needs extensive computations. So a tool is needed to select the
suitable model scope according to the allowed deviation of the model
results from those of the experiments. This thesis discusses the effect of
different casting parameters such as casting configuration, casting
position, melt superheat, mould preheat and filling rate on the following
features: complete filling, filling pattern, cooling curves, solidification
time, casting porosity and finally the microstructure observation. A plate
shaped casting is selected for experimentation in both vertical and
horizontal positions. Mould filling experiments are executed using
colored water to validate the filling pattern. A group of pure aluminium
specimens are cast to examine the different casting parameters. A
comparative study is made between the experimental results, a model
considering fluid flow and an ordinary model assumes instantaneous
filling case. Based on the results, a map is suggested to divide the space
of casting parameters solution set into two regions; recommended and not
recommended fluid flow modeling.