Mathematical modelling of powder material motion and transportation in high-temperature flow core during plasma coatings application

International Conference on Mechanical Engineering, Automation and Control Systems 2017

机械制造;无线电电子学;计算机科学

Bogdanovich, V.I.^1 ; Giorbelidze, M.G.^1

Samara National Research University, Moskovskoe Highway 34, Samara

443086, Russia^1

关键词: Anode channels;    High-temperature flows;    Momentum loss;    Particles separation;    Plasma coating;    Powder material;    Sprayed particles;    Thermal flows;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/327/2/022036/pdf
DOI  :  10.1088/1757-899X/327/2/022036

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

A problem of mathematical modelling of powder material motion and transportation in gas thermal flow core has been addressed. Undertaken studies indicate significant impact on dynamics of motion of sprayed particles of phenomenological law for drag coefficient and accounting momentum loss of a plasma jet upon acceleration of these particles and their diameter. It is determined that at great dispersion of spraying particles, they reach detail surface at different velocity and significant particles separation takes place at spraying spot. According to the results of mathematical modelling, requirements for admissible dispersion of diameters of particles used for spraying have been formulated. Research has also allowed reducing separation of particles at the spraying spot due to the selection of the method of powder feed to the anode channel of the plasma torch.