TY - GEN
T1 - Numerical investigation of nano-material processing by thermal plasma flows
AU - Shigeta, Masaya
PY - 2013
Y1 - 2013
N2 - The high performance of supercomputing systems has made it feasible to clarify multi-scale physics of nano-material processes in thermal plasma environments with thermofluidic and electromagnetic interactions. In this chapter, two challenges related to the thermal plasma processing of nanoparticle fabrication are presented as new applications of supercomputing. The growth process of titanium boride nanoparticles from the precursory binary vapors of titanium and boron is computed using a unique mathematical model. In consequence, the collective and simultaneous growth behavior through nucleation, co-condensation and coagulation is clarified. The 3-D complex structure of the thermofluid field in/around an argon inductively coupled thermal plasma (ICTP) has also been revealed. The higher-temperature region has larger vortices, whereas the lower-temperature flow forms smaller eddies. Because a high-temperature plasma has a high electrical conductivity, the Lorentz forces are generated there; and consequently recirculating zones are produced. In addition, it is also clarified that turbulent and laminar regions co-exist and form a complicated flow field in the ICTP torch.
AB - The high performance of supercomputing systems has made it feasible to clarify multi-scale physics of nano-material processes in thermal plasma environments with thermofluidic and electromagnetic interactions. In this chapter, two challenges related to the thermal plasma processing of nanoparticle fabrication are presented as new applications of supercomputing. The growth process of titanium boride nanoparticles from the precursory binary vapors of titanium and boron is computed using a unique mathematical model. In consequence, the collective and simultaneous growth behavior through nucleation, co-condensation and coagulation is clarified. The 3-D complex structure of the thermofluid field in/around an argon inductively coupled thermal plasma (ICTP) has also been revealed. The higher-temperature region has larger vortices, whereas the lower-temperature flow forms smaller eddies. Because a high-temperature plasma has a high electrical conductivity, the Lorentz forces are generated there; and consequently recirculating zones are produced. In addition, it is also clarified that turbulent and laminar regions co-exist and form a complicated flow field in the ICTP torch.
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U2 - 10.1007/978-3-642-32454-3_14
DO - 10.1007/978-3-642-32454-3_14
M3 - Conference contribution
AN - SCOPUS:84896607790
SN - 9783642324536
T3 - Sustained Simulation Performance 2012 - Proceedings of the Joint Workshop on High Performance Computing on Vector Systems, and Workshop on Sustained Simulation Performance
SP - 169
EP - 182
BT - Sustained Simulation Performance 2012 - Proceedings of the Joint Workshop on High Performance Computing on Vector Systems, and Workshop on Sustained Simulation Performance
PB - Springer Science and Business Media, LLC
T2 - Joint Workshop on High Performance Computing on Vector Systems and 15th Workshop on Sustained Simulation Performance 2012
Y2 - 1 March 2012 through 1 March 2012
ER -