id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
cet-14741		cet-14741		6	.pdf	application/pdf	3335	126	45	3. Results and discussion 3.1 Comparison with experimental data and various viscosity model The results obtained from a series of CFD simulations using various viscosity models with different Reynolds numbers were conducted to provide viscosity–shear rate relationship as illustrated in Figure 2. Nomenclature 𝜌𝜌 – density of fluid, kg/m3 𝒖𝒖 – velocity vector, m/s 𝛻𝛻 – pressure, Pa 𝜂𝜂 – dynamic viscosity of fluid, kg/(m s) 𝝉𝝉 – stress tensor or shear stress, Pa 𝐃𝐃 – symmetric rate of strain tensor, 1/s 𝑛𝑛 – flow behavior index, - 𝐾𝐾 – flow consistency index, Pa sn �̇�𝛾 – shear rate of the fluid flow, 1/s 𝜇𝜇0 – initial viscosity, kg/(m s) 𝜇𝜇∞ – infinite viscosity, kg/(m s) 𝐾𝐾∗ – modified consistency index of 𝐾𝐾, - 𝜆𝜆 – time constant for proposed viscosity model, s 𝜃𝜃 – scale factor for time constant 𝜆𝜆, - Regen – generalized Reynolds number, - 𝑈𝑈 – imposed average velocity, m/s 𝑚𝑚 – time constant for Cross power law model, s 𝑘𝑘 – time constant for Bird–Carreau model, s �̇�𝛾𝑐𝑐 – critical shear rate, 1/s �̇�𝛾𝑏𝑏 – breakthrough shear rate, 1/s References Bird R.B. and Carreau P.J., 1968, A Nonlinear Viscoelastic Model for Polymer Solutions and Melts–I, Chemical Engineering Science, 23, 427 – 434.	cache/cet-14741.pdf	txt/cet-14741.txt