State of the art of Newtonian anisotropic turbulence models for viscoelastic models developments

• Grant number: 14/27018-0
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: March 01, 2015
• End date: June 30, 2016
• Field of knowledge: Engineering - Mechanical Engineering - Transport Phenomena
• Principal Investigator: Pedro Miguel Rebelo Resende
• Grantee: Yara Quilles Marinho
• Host Institution: Universidade Estadual Paulista (UNESP). Campus Experimental de Sorocaba. Sorocaba , SP, Brazil

Abstract

The reduction of drag phenomenon was discovered by Tom's in 1949 by introducing polymeric particles in a solvent turbulent flow. After that, many researchers try to explain this phenomenon and take more advantage of the viscoelastic fluids present in many industrial processes and under turbulent conditions. The advantage of the drag reduction phenomenon by using this type of fluids can be observed in fluid transport at long distances and in heat and refrigeration systems, such as in district heating systems. Other type of application is the petroleum\ and derivative transport at long distances, therefore, it is necessary to develop adequate turbulence models that can be used to solve engineering problems. Actually there are models that can accuracy predict relevant quantities, like for example Resende et al. [1-5], but they only were tested in simple geometries like channel and pipe turbulent flows. Therefore it is necessary, at short time, to expand this viscoelastic models to complex geometries, such as recirculation turbulent flows with viscoelastic fluids for different degree of drag reduction. Which will allow to simulate different types of engineering projects, and consequently reducing time and cost in experiments. For this reason, the state of the art of Newtonian anisotropic turbulent models is made for future developments in viscoelastic turbulent models, creating high performance models to predict viscoelastic turbulent flows in complex geometries.