TY - JOUR
T1 - Effects of plasma-suspension interaction on axial injection DC suspension plasma spray
AU - Suzuki, Takuya
AU - Saito, Hiroki
AU - Fujino, Takayasu
N1 - Publisher Copyright:
© 2018 IEEE.
PY - 2019/1
Y1 - 2019/1
N2 - A rotationally axisymmetric 2-D numerical simulation of a dc suspension plasma spray (SPS) torch with an axial injection system is performed to discuss the interaction between the plasma fluid and suspensions. A two-way coupling model is used for modeling the behavior of plasma fluid and suspensions with mutual interaction effects through momentum and energy transfer. To deeply understand the mutual interaction effects, the numerical simulation using a one-way coupling model, in which the influence of suspensions on the characteristics of plasma fluid is not taken into account, is also performed for comparison. A suspension feed rate is parametrically varied to discuss its influence on the characteristics of plasma fluid and suspensions. Numerical results show that the two-way interaction substantially impacts the velocities and temperatures of plasma fluid and suspensions, and the trajectories of suspensions in the dc SPS torch with an axial injection system. It is also shown from the numerical results that the increase in suspension feed rate results in decreasing the electric current density around the central axis of the plasma torch and expanding the region with electric current in the radial direction.
AB - A rotationally axisymmetric 2-D numerical simulation of a dc suspension plasma spray (SPS) torch with an axial injection system is performed to discuss the interaction between the plasma fluid and suspensions. A two-way coupling model is used for modeling the behavior of plasma fluid and suspensions with mutual interaction effects through momentum and energy transfer. To deeply understand the mutual interaction effects, the numerical simulation using a one-way coupling model, in which the influence of suspensions on the characteristics of plasma fluid is not taken into account, is also performed for comparison. A suspension feed rate is parametrically varied to discuss its influence on the characteristics of plasma fluid and suspensions. Numerical results show that the two-way interaction substantially impacts the velocities and temperatures of plasma fluid and suspensions, and the trajectories of suspensions in the dc SPS torch with an axial injection system. It is also shown from the numerical results that the increase in suspension feed rate results in decreasing the electric current density around the central axis of the plasma torch and expanding the region with electric current in the radial direction.
KW - Axial injection dc plasma spray torch
KW - numerical simulation
KW - plasma-suspension interaction
KW - suspension plasma spraying (SPS)
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U2 - 10.1109/TPS.2018.2871837
DO - 10.1109/TPS.2018.2871837
M3 - Article
AN - SCOPUS:85055025267
SN - 0093-3813
VL - 47
SP - 688
EP - 700
JO - IEEE Transactions on Plasma Science
JF - IEEE Transactions on Plasma Science
IS - 1
M1 - 8491358
ER -