Modeling of Flow Fields of Different Delivery Chamfers in Spray Forming Process

Abstract:

The computational fluid dynamic (CFD) software was used to calculate the velocity field in atomization chamber of spray forming equipment. The relationship between melt flow rates, gas aspiration of the atomizer and operating pressure are complex, and the above mentioned parameters are closely related to the atomization process. The influences of different delivery chamfers on gas flow field, which is determined by atomizer structure, were analyzed. Using K-epsilon model with a symmetrical domain, the gas dynamic of different delivery chamfer conditions were investigated. The results indicate that the sharp point of delivery tube causes detachment of flow field, and 56°, 45° and 34° chamfer conditions have same diffusion angle. Gas was aspirated from delivery tube when chamfer was 0°, which is beneficial to liquid metal flow in atomization process.

• Periodical: Materials Science Forum (Volume 789)
• Pages: 554-559
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.789.554
• Online since: April 2014
• Authors: Yang Liu*, Zhou Li, Guo Qing Zhang, Wen Yong Xu
• Keywords: Atomization, Flow Field, Numerical Simulation, Spray Forming

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