Complex impedance transition of molten sodium chloride during crystallization process by transient enthalpy porosity-impedance (TEP-I) model compared with multi-layered impedance measurement
Complex impedance
transition of molten sodium chloride in spatio-temporal domain during crystallization process has been calculated by transient enthalpy porosity-impedance (TEP-I) model and compared with multi-layered impedance measurement. The TEP-I model is a multi-physical combination model between transient enthalpy porosity model (first step of the TEP-I model) to calculate solid mass fraction
transition of molten sodium chloride during the crystallization process, and transient impedance model (second step of the TEP-I model) which is derived from the Maxwell-Ohm’s law model to calculate spatially averaged complex impedance
based on the
transition. To obtain gravitational effects in spatio-temporal domain during the crystallization process, the
was calculated in multi-layered heights, i.e.,
. The TEP-I calculation results show that the normalized spatially averaged complex impedance
of the molten sodium chloride is slightly increased during crystal nucleation and significantly increased during larger crystals formation until coalescence of crystals is achieved at the end of the crystallization process. The multi-layered calculation also shows a non-uniform increment of the
as the result of gravity. Furthermore, the TEP-I calculation results were compared with multi-layered impedance measurement results. The comparison shows that the temporal averaged errors are
