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Author: search.filters.author.Kitprathaung, NusthaSubject: search.filters.subject.Computational fluid dynamics

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    Item type:Publication,
    Optimization of Degradable Polylactic Acid-Based Coating Materials for Sustainable Wire Manufacturing Injection Process Using Computational Fluid Dynamics Analysis
    (2025-06-01)
    Nabudda, Kriengkrai
    ;
    Promjariyakoon, Rattanaporn
    ;
    Kitprathaung, Nustha
    ;
    Ritthong, Wirote
    ;
    Intasonti, Sontinan
    This study investigates the impact of injection angle on polylactic acid (PLA) wire coating performance, focusing on flow dynamics, heat transfer, mass density, and pressure distribution. Three angles: 30°, 45°, and 60° were assessed for their effects on coating characteristics. At 30°, the flow is smooth with minimal turbulence, ensuring consistent deposition. The 60° angle increases velocity and material penetration but risks turbulence and uneven coating. The 45° angle optimally balances material mixing and flow stability. In terms of heat transfer, the 30° angle concentrates heat near the injection point, creating a steep thermal gradient, while the 60° angle disperses heat more broadly but with lower intensity. The 45° angle ensures uniform heat distribution, improving energy efficiency. Regarding mass density, the 30° angle favours localized deposition, ideal for concentrated applications, while the 60° angle promotes broader distribution with reduced concentration. The 45° angle optimises density uniformity and maintains structural integrity. Pressure distribution follows similar trends, with 30° and 60° angles causing uneven deposition, whereas the 45° angle ensures balanced pressure distribution. In conclusion, the 45° angle offers superior performance across all parameters, providing an optimal balance of efficiency, uniformity, and structural integrity, thus enhancing PLA wire coating quality for sustainable engineering applications.