A seismologically consistent compositional model of Earth's core

investigating the feasibility of a proposed model for geometric design of deployable arch structures

deployable scissor type structures are composed of the so-called scissor-like elements (sles), which are connected to each other at an intermediate point through a pivotal connection and allow them to be folded into a compact bundle for storage or transport. several sles are connected to each other in order to form units with regular polygonal plan views. the sides and radii of the polygons are...

Developing a Compositional Reservoir Model for Investigating the Effect of Interfacial Tension on Oil Recovery

In this paper, a simplified formulation for compositional reservoir simulator is presented. These types of simulators are used when inter-phase mass transfer depends on phase composition as well as pressure. The procedure for solving compositional model equations is completely described. For equilibrium calculation, property estimation Peng Robinson equation of state is used. This equation ...

Compositional instability of Earth’s solid inner core

[1] All models that invoke convection to explain the observed seismic variations in Earth’s inner core require unstable inner core stratification. Previous work has assumed that chemical effects are stabilizing and focused on thermal convection, but recent calculations indicate that the thermal conductivity at core temperatures and pressures is so large that the inner core must cool entirely by...

Thermal and compositional evolution of the core

Synopsis This chapter examines the thermal and compositional evolution of the Earth’s core, from shortly after its formation to the present day. The initial state and composition of the core were determined mainly by the manner in which the Earth accreted. The initial core temperature was high enough to produce lower-mantle melting and may have dissolved substantial quantities of elements (such...

Compositional Expectation: A Purely Distributional Model of Compositional Semantics