Numerical and experimental investigations of splat geometric characteristics during oblique impact of plasma spraying |
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| Authors: | Chang-Wei Kang Jiak Kwang TanLunsheng Pan Cheng Yee LowAhmed Jaffar |
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| Institution: | a Institute of High Performance Computing, 1 Fusionopolis Way, #16-16 Connexis, Singapore 138632, Singapore
b Faculty of Mechanical Engineering, Universiti Teknologi MARA, Shah Alam, Selangor Darul Ehsan, 40450, Malaysia |
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| Abstract: | Splats are obtained on the substrates inclined at different angles (0°, 20°, 40° and 60°) by plasma spraying process and characterized by SEM and WYKO® optical surface profiler. Numerical model is developed using CFD software FLOW-3D® to simulate the process of droplet impact, spreading and solidification onto the substrates. Splat characteristics such as spread factor, aspect ratio and fractional factor are defined and compared between simulation and experiment. Fair agreements are obtained. In addition, the impacting behavior including spreading and solidification are analyzed in details from the simulation results. The rates of reduction in droplet kinetic energy during impact, spreading and solidification are also compared between different inclination angles. |
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| Keywords: | Splat Oblique impact Spreading Solidification and inclined substrate |
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