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numerical simulation on supersonic flow in high-velocity oxy-fuel thermal spray gun
Pages: 65-70
Year: Issue:  1
Journal: Journal of Thermal Science

Keyword:  compressible flow supersonic jet thermal spray HVOF.;
Abstract: <正>This paper analyzes the behaviour of coating particles as well as the gas flow both inside and outside of the High-Velocity Oxy-Fuel (HVOF) thermal spray gun by using a quasi-one-dimensional analysis and a numerical simulation. The HVOF gun in the present analysis is an axially symmetric convergent-divergent nozzle with the design Mach number of 2.0. From the present analysis, the distributions of velocity and temperature of the coating particles flying inside and outside of the HVOF gun are predicted. The velocity and temperature of the coating particles at the exit of the gun calculated by the present method agree well with the previous experimental results. Therefore, the present method of calculation is considered to be useful for predicting the HVOF gas and particle flows.
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