Physical explosion models applications

This correction plays a key role in any cosmological application. Without it, SNIa events could not be used as distance indicators. However, its purely empirical nature remains unsatisfactory to demanding theoretical minds. We would like to be able to explain physically why some explosions are weaker than others, and what effect this has on the appearance of the object. This involves building detailed models of these explosions and the way radiation is hansferred through the expanding envelope, similar to those made to describe atomic bombs or spheres struck by laser beams, which implode before exploding. 

The same approach can be applied to investigate the explosivity conditions of the H20-NaCl system. We have selected the Anderko-Pitzer (AP) equation of state,which is based on realistic physical hypotheses. It describes H20-NaCl by means of statistical thermodynamic models developed for dipolar hard spheres. This assumption is reasonable at high temperatures, where NaCl is known to form dipolar ion pairs. However, for this reason, this equation of state is only applicable above 573 K, 300°C. 

There has been an explosion in the application of atomistic and molecular modeling to corrosion and electrochemistry in the past decade. The continued increasing computational power has allowed the development and implementation of atomistic and molecular modeling frameworks that would have been impractical even a short time ago. These frameworks allow the application of fundamental physics at the appropriate scale on assemblies of atoms of a size that provides a more realistic basis than ever before. In some cases, that level is the determination of the electronic structure based on quantum mechanics. Such is the case when determining the energetics of surface structures and reactions. In other cases, the appropriate scale requires the forces between atoms or ions to be calculated, and the effects those forces have on the configuration of atoms and how it changes with time. Surface and solution diffusion are prime examples. 

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