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| Flow field characteristics and particle flow characteristics of atmospheric plasma spraying |
| ZHANG Yong，GUO Longlong，JU Luyan，WU Heng |
| （College of Mechanical Engineering, Xi’an petroleum university, Xi’an, 710000, China） |
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Abstract Numerical analysis combined with experimental research method has been used to study the flow field
characteristics and particle flow characteristics of atmospheric. The results show that the spraying temperature of
argon hydrogen mixture is higher than that of pure argon about 30%. Particles temperature and velocity are lower
than those of the main gas when spraying distance is less than 70 mm, so particles are in the process of heating
speed up. Particles temperature and velocity are reached the highest, close to the main gas when spraying dis‐
tance is between 70-90 mm. Main gas temperature and velocity are lower than those of particles when spraying
distance is greater than 90 mm, so particles are in the process of cooling speed down. The experimental results
show that the particle velocity and temperature calculation value and experimental value have the same change
trend, verifying the accuracy of the results of numerical calculation. Flow field temperature and velocity increases
with the increase of main gas when the main gas flow is constant. Fluid velocity increases with the increase of
the main gas. Flow field temperature decreases with the increase of the main gas.
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Received: 28 August 2021
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2022, Vol. 32 
