FERNANDES, H. C. S.; http://lattes.cnpq.br/1988020289181692; FERNANDES, Hélder de Carvalho da Silva.
Resumo:
This research aims to develop a suite of computer codes that enabled the resolution of
some problems involving thermodynamic and transport , very useful in the study of
processes of chemical engineering . These include the calculation of properties via
equations of state such as the Peng-Robinson , Redlich-Kwong and Soave-Redlich-
Kwong , calculation of activity coefficient by the NRTL and Wilson methods , vapor
pressure for pure components in a mixture and molar volume liquid . Among the
transport properties are calculating the viscosity, surface tension and thermal capacity.
All these properties are of great importance when developing a project that involves
the work of a chemical engineer and can easily change the parameters of the
equations in order to optimize the process without the need to redo numerous
mathematical operations and resolution of systems. A study and development of
computer codes and methods of resolution of the flash system was also carried out in
order to meet four methods (Newton, Newton optimized successive substitution and
accelerated successive substitution) that is dispersed in the literature. All calculations
were validated and less than 5% error were obtained showing good accuracy in the use
of codes.
