In this paper we report the rebuilding of liquid metal experimental loop （LMEL） to avoid loop danger in running. In the new loop, We have eliminated the hidden trouble of the inherent safety in the former loop, obta...In this paper we report the rebuilding of liquid metal experimental loop （LMEL） to avoid loop danger in running. In the new loop, We have eliminated the hidden trouble of the inherent safety in the former loop, obtained more stable magnetic field region, upgraded the reliability of the data acquisition and processing. New LMEL can provide the more extensive experiments on MHD effects and their thermal-hydraulics on the liquid metal divertor and the liquid metal blanket.展开更多
A phase-field model with forced liquid metal flow was employed to study the effect of boundary heat flux on the dendritic structure forming of a Ni-40.8%Cu alloy with liquid flow during solidification.The effect of th...A phase-field model with forced liquid metal flow was employed to study the effect of boundary heat flux on the dendritic structure forming of a Ni-40.8%Cu alloy with liquid flow during solidification.The effect of the flow field coupling with boundary heat extractions on the morphology change and distributions of concentration and temperature fields was analyzed and discussed.The forced liquid flow could significantly affect the dendrite morphology,concentration and temperature distributions in the solidifying microstructure.And coupling with boundary heat extraction,the solute segregation and concentration diffusion were changed with different heat flux.The morphology,concentration and temperature distributions were significantly influenced by increasing the heat extraction,which could relatively make the effect of liquid flow constrained.With increasing the initial velocity of liquid flow,the lopsided rate of the primary dendrite arm was enlarged and the transition of developing manner of the secondary arms moved to the large heat extraction direction.It was the competition between heat flux and forced liquid flow that finally determined microstructure forming during solidification.展开更多
文摘In this paper we report the rebuilding of liquid metal experimental loop （LMEL） to avoid loop danger in running. In the new loop, We have eliminated the hidden trouble of the inherent safety in the former loop, obtained more stable magnetic field region, upgraded the reliability of the data acquisition and processing. New LMEL can provide the more extensive experiments on MHD effects and their thermal-hydraulics on the liquid metal divertor and the liquid metal blanket.
基金supported by the NPU Foundation of Fundamental Research,China(Grant No.JC201272)
文摘A phase-field model with forced liquid metal flow was employed to study the effect of boundary heat flux on the dendritic structure forming of a Ni-40.8%Cu alloy with liquid flow during solidification.The effect of the flow field coupling with boundary heat extractions on the morphology change and distributions of concentration and temperature fields was analyzed and discussed.The forced liquid flow could significantly affect the dendrite morphology,concentration and temperature distributions in the solidifying microstructure.And coupling with boundary heat extraction,the solute segregation and concentration diffusion were changed with different heat flux.The morphology,concentration and temperature distributions were significantly influenced by increasing the heat extraction,which could relatively make the effect of liquid flow constrained.With increasing the initial velocity of liquid flow,the lopsided rate of the primary dendrite arm was enlarged and the transition of developing manner of the secondary arms moved to the large heat extraction direction.It was the competition between heat flux and forced liquid flow that finally determined microstructure forming during solidification.
