Studies of foam flow in highly permeable porous media are still limited due to foam's complex behavior and discrepancies research. Specifically, it is unclear how flows capillary tubes what the effects material tube diameter are. We have investigated rheology pre-generated tubes. Experiments were carried out using two types tubes: hydrophobic (PTFE – polytetrafluoroethylene; FEP fluorinated eth...

A planar two-dimensional computational analysis is presented to qualify traditional and fractal vane-in-cup geometries for accurate rheometry of simple viscoplastic fluids with without slip. Numerical simulations based on an adaptive augmented Lagrangian scheme are used study the flow field yield-stress within around vane tools N=3 24 arms a wide range Bingham numbers, B (i.e. ratio yield stres...

We propose a semismooth Newton method for non-Newtonian models of incompressible flow where the constitutive relation between shear stress and symmetric velocity gradient is given implicitly; this class relations captures instance Bingham Herschel–Bulkley. The proposed avoids use variational inequalities based on particularly simple regularisation which (weak) convergence approximate stresses k...

Abstract Blood coagulation is a process, which initiated by certain physico-chemical effects. This process results in change the blood from sol state, that well suited for further processing, to gel state. 13 clotting factors take part cascade system of coagulation. Trisodium-citrate affects factor IV, calcium, and prevents texture. The effect different concentrations trisodium-citrate (0, 0.48...

This study was conducted to determine the rheological properties of gochujang and chogochujang at different temperatures (25, 35, and 45°C). Rheological properties of the samples were determined using a rotational rheometer at a shear range of 1 to 40 s-1. Gochujang and chogochujang were found to be non-Newtonian fluids according to the Herschel-Bulkley model. Yield stress and consistency coeff...

Direct numerical simulation of the weakly turbulent flow of non-Newtonian fluids is undertaken for two different generalised Newtonian rheology models using a spectral element-Fourier method. Results for a power law (shear-thinning) rheology agree well with experimentally determined logarithmic layer correlations and with other previously published experimental work. As the flow index becomes s...