In contrast to the liquid outer core, the earth’s inner core is mostly solid, and its composition is more pure iron. Based on dynamic arguments related to the freezing process of the inner core, and the observation of much lower P-wave quality factor in the inner core (Qab450) than in the outer core (QaN10,000), it has been suggested that a mushy layer with liquid inclusions may exist at the to...

Abstract A radial integral boundary element method (BEM) is used to simulate the phase change problem with a mushy zone in this paper. Three phases, including solid phase, liquid and zone, are considered problem. First, according continuity conditions of temperature its gradient on liquid-mushy interface, simulation can be as whole part, namely, non-solid latent heat approximated by source whic...

We consider a semi-infinite material that is initially assumed to be liquid at its melting temperature which, without loss of generality, we assume at 0 C. At time t 0  , a heat flux (characterized by the constant 0 q 0  ) is imposed at x 0  and then solidification ensues, where three distinct regions can be distinguished (for a complete description of this mushy model see [1]): H1) Liquid, ...

Understanding the macrosegregation formed by applying magnetic fields is of high commercial importance. This work investigates how static magnetic fields control the solute and primary phase distributions in four directionally solidified alloys (i.e., Al-Cu, Al-Si, Al-Ni and Zn-Cu alloys). Experimental results demonstrate that significant axial macrosegregation of the solute and primary phases ...

The y-ray tomographic sensor invented by the CastScan consortium at MIT for the non-invasive real time monitoring of the solidification front in the continuous casting of metals is a new industrial computed tomography (CT) tool. The sensor potentially offers great economic benefits to the continuous casting industry by preventing break-outs, and increasing productivity and efficiency through op...

The research on latent heat storage technology is beneficial for the large-scale popularization and application of energy technology. In order to solve difficulties in thermal (LTES) technology, numerical studies solid–liquid phase-change process LTES units using enthalpy-porosity method have become hotspots. Among them, importance studying mushy-zone parameter has been neglected. this paper, a...