Study on the two-way coupling turbulent model and rheological properties for fiber suspension in the contraction
| Autor: | Zhanhong Wan, Kun Zhou, Wei Yang, Zhi-long Zhao |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Turbulence Applied Mathematics Mechanical Engineering General Chemical Engineering Constitutive equation 02 engineering and technology Mechanics Reynolds stress 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 010305 fluids & plasmas Physics::Fluid Dynamics Stress (mechanics) Classical mechanics Rheology 0103 physical sciences General Materials Science Diffusion (business) 0210 nano-technology Anisotropy Suspension (vehicle) |
| Zdroj: | Journal of Non-Newtonian Fluid Mechanics. 246:1-9 |
| ISSN: | 0377-0257 |
| DOI: | 10.1016/j.jnnfm.2017.03.009 |
| Popis: | A two-way coupling turbulent model is derived to understand and predict the interaction between the additive and the carrier flow field. Due to the anisotropic characteristics of the turbulence structure in the contraction, the Reynolds stress mode (RSM) is adopted as the fundamental governing equations. The additional stress item arising from fibers employs the Batchelor's constitutive equation for the dilute and semi dilute suspension and its divergence can have the forms of the additional diffusion term and the additional viscous dissipation term by derivation. Fiber orientation probability distribution is calculated by the Reynolds averaged Fokker–Plank equation. Based on the model above, the influences of fibers concentration on fiber orientation distribution and rheological properties for the suspension in the contraction are discussed by numerical simulation. |
| Databáze: | OpenAIRE |
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