Abstract
Abstract Numerical and experimental studies were performed to analyze a planar flow melt spinning process (PFMS) with a focus on the optimal nozzle design. Three-dimensional computational fluid dynamics (CFD) modeling using FIDAP was carried out to analyze the flow distribution in various nozzle shapes including rectangular, trapezoidal, and hemispherical edges. A laser-based Particle Image Velocimetry (PIV) system was developed to measure the velocity field at the nozzle exit. The CFD modeling results were validated by the PIV measurements. It was found that a converging nozzle with diverging edges along with a 30°-injection angle provided the best design. The optimized nozzle was used to produce high quality ribbons as characterized by the surface roughness measurements and micrograph techniques.
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