| Summary: | 碩士 === 逢甲大學 === 材料與製造工程所 === 94 === The flow pattern of the air knife spraying likes a straight jet flow. The media material of the air knife could be gas, liquid or superfine solid particle. Therefore it is very flexible and variety to apply in industry. For example, gas was used to glass dried, cleaning or paper & fabrics seasoned …etc.; If the used liquid under a steady flowing condition, it could be applied in medicament coating of LCD processing；if the superfine solid particle in the air, then we could apply It is used to bead coating on a plain surface, i.e. Ceramic bead coated on the surface of IR plate which inside the Post Curing during LCD processing, or coated on the surface of sand paper…etc.
This study uses the numerical simulation to investigate the gas flow phenomenon of the air knife. We adopt the Comsol Multiphysics to simulate the flow behaviors and flow spread situation. From the results, we could conclude that the inlet pressure of the air knife had a large affection of the jet flow field. And, the fillister design inside the air knife had the feature of flow rectification. It can make the spatter flow by air knife become well mixed.
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