Abstract
The numerical calculation model was founded on partial data of the actual test of flow field in chain plate fiber dryer, then the computational fluid dynamics (CFD) software Fluent was adopted to analyze the numerical result of dryer box unit. The result show: the numerical calculation method and data were reliable; the flow relation formula was obtained by air flow experiment in which air flew through fiber layer and chain plate, could be treated as additional momentum source term equation of air through the porous media; owing to the unreasonable setting of open porosity of air distribution plate in the dryer, there was obviously non-uniform air distribution above fiber layer, which would lead to non-uniform drying phenomenon; because of the centrifugal force of fan and diversion effect of volute, there was obvious velocity component in y direction, which could enhance the convective mass transfer effect. The research result could become the basis of design, on which the construction of chain plate fiber dryer was optimized, especially in the optimization of air distribution plate and volute of fan.
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