1. Estimation of turbulent fragmenting forces in a high-pressure homogenizer from computational fluid dynamics
- Author
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Håkansson, Andreas, Innings, Fredrik, Revstedt, Johan, Trägårdh, Christian, and Bergenståhl, Björn
- Subjects
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COMPUTATIONAL fluid dynamics , *TURBULENCE , *HIGH pressure (Science) , *FRAGMENTATION reactions , *COMPUTER simulation , *NAVIER-Stokes equations , *FORCE & energy , *HYDRODYNAMICS - Abstract
Abstract: The aim of this study was to find models for turbulent fragmenting forces in the high-pressure homogeniser from data available in Computational Fluid Dynamics (CFD) simulations with Reynolds Averaged Navier Stokes (RANS) turbulence models. In addition to the more common RANS k–ε turbulence models, a Multi-scale k–ε model was tested since experimental investigations of the geometry imply large differences in behaviour between turbulent eddies of different length-scales. Empiric models for the driving hydrodynamic factors for turbulent fragmentation using the extra information given by multi-scale simulations were developed. These models are shown to give a more reasonable approximation of local fragmentation than models based on the previously used RANS k–ε models when comparing to hydrodynamic measurements in an experimental model. [Copyright &y& Elsevier]
- Published
- 2012
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