TY - JOUR
T1 - Numerical study on the effect of substrate angle on particle impact velocity and normal velocity component in cold gas dynamic spraying based on CFD
AU - Yin, Shuo
AU - Wang, Xiao Fang
AU - Li, Wen Ya
AU - Xu, Bao Peng
PY - 2010/12
Y1 - 2010/12
N2 - Numerical study was conducted to investigate the effect of substrate angle on particle impact velocity and normal velocity component in cold gas dynamic spraying by using three-dimensional models based on computational fluid dynamics. It was found that the substrate angle has significant effect on particle impact velocity and normal velocity component. With increasing the substrate angle, the bow shock strength becomes increasingly weak, which results in a gradual rise in particle impact velocity. The distribution of the impact velocity presents a linearly increase along the substrate centerline due to the existence of the substrate angle and the growth rate rises gradually with increasing the substrate angle. Furthermore, the normal velocity component reduces steeply with the increase in substrate angle, which may result in a sharp decrease in deposition efficiency. In addition, the study on the influence of procedure parameters showed that gas pressure, temperature, type, and particle size also play an important role in particle acceleration.
AB - Numerical study was conducted to investigate the effect of substrate angle on particle impact velocity and normal velocity component in cold gas dynamic spraying by using three-dimensional models based on computational fluid dynamics. It was found that the substrate angle has significant effect on particle impact velocity and normal velocity component. With increasing the substrate angle, the bow shock strength becomes increasingly weak, which results in a gradual rise in particle impact velocity. The distribution of the impact velocity presents a linearly increase along the substrate centerline due to the existence of the substrate angle and the growth rate rises gradually with increasing the substrate angle. Furthermore, the normal velocity component reduces steeply with the increase in substrate angle, which may result in a sharp decrease in deposition efficiency. In addition, the study on the influence of procedure parameters showed that gas pressure, temperature, type, and particle size also play an important role in particle acceleration.
KW - bow shock
KW - cold gas dynamic spray
KW - impact velocity
KW - numerical simulation
KW - substrate angle
KW - Three-dimensional model
UR - http://www.scopus.com/inward/record.url?scp=78650763161&partnerID=8YFLogxK
U2 - 10.1007/s11666-010-9510-3
DO - 10.1007/s11666-010-9510-3
M3 - 文章
AN - SCOPUS:78650763161
SN - 1059-9630
VL - 19
SP - 1155
EP - 1162
JO - Journal of Thermal Spray Technology
JF - Journal of Thermal Spray Technology
IS - 6
ER -